diff --git a/CMakeLists.txt b/CMakeLists.txt
index 30bd8c65e..cec567afe 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -79,14 +79,15 @@ set(PLACE_5 "Emily Place Reserve")
 # Example reference point (e.g., near Emily Place Reserve)
 set(CH7_PLACE_1 ${PLACE_5})
 set(CH7_OSMID_1 ${OSMID_5})
+set(CH7_PLACE_2 ${PLACE_1})
+set(CH7_OSMID_2 ${OSMID_1})
+
 set(POINT1_LAT "-36.8471438")
 set(POINT1_LON "174.7710042")
 
 # Example reference point (e.g., near Auckland University of Technology)
 set(POINT2_LAT "-36.8524328")
 set(POINT2_LON "174.766749")
-set(CH7_PLACE_2 ${PLACE_1})
-set(CH7_OSMID_2 ${OSMID_1})
 
 
 
diff --git a/docs/basic/images/sql_function/CMakeLists.txt b/docs/basic/images/sql_function/CMakeLists.txt
index 7e154f925..b03b3052c 100644
--- a/docs/basic/images/sql_function/CMakeLists.txt
+++ b/docs/basic/images/sql_function/CMakeLists.txt
@@ -3,13 +3,12 @@
 # Files
 #---------------------
 set(PGR_WORKSHOP_IMG_FILES
-  ch7-e4.png
-  ch7-e5.png
-  ch7-e6.png
-  ch7-e7.png
-  ch7-e8-1.png
-  ch7-e8.png
-  )
+  sql_azimuth_fixed.png
+  sql_route_geom.png
+  sql_route_names.png
+  sql_route_readable.png
+  sql_route_geom_detail.png
+)
 
 
 foreach (f ${PGR_WORKSHOP_IMG_FILES})
diff --git a/docs/basic/images/sql_function/ch7-e4.png b/docs/basic/images/sql_function/ch7-e4.png
deleted file mode 100644
index 355e03825..000000000
Binary files a/docs/basic/images/sql_function/ch7-e4.png and /dev/null differ
diff --git a/docs/basic/images/sql_function/ch7-e5.png b/docs/basic/images/sql_function/ch7-e5.png
deleted file mode 100644
index e6d39463c..000000000
Binary files a/docs/basic/images/sql_function/ch7-e5.png and /dev/null differ
diff --git a/docs/basic/images/sql_function/ch7-e6.png b/docs/basic/images/sql_function/ch7-e6.png
deleted file mode 100644
index b51e26fde..000000000
Binary files a/docs/basic/images/sql_function/ch7-e6.png and /dev/null differ
diff --git a/docs/basic/images/sql_function/ch7-e7.png b/docs/basic/images/sql_function/ch7-e7.png
deleted file mode 100644
index 702ee8a81..000000000
Binary files a/docs/basic/images/sql_function/ch7-e7.png and /dev/null differ
diff --git a/docs/basic/images/sql_function/ch7-e8-1.png b/docs/basic/images/sql_function/ch7-e8-1.png
deleted file mode 100644
index c73d1a859..000000000
Binary files a/docs/basic/images/sql_function/ch7-e8-1.png and /dev/null differ
diff --git a/docs/basic/images/sql_function/ch7-e8.png b/docs/basic/images/sql_function/ch7-e8.png
deleted file mode 100644
index c53961fa3..000000000
Binary files a/docs/basic/images/sql_function/ch7-e8.png and /dev/null differ
diff --git a/docs/basic/images/sql_function/sql_azimuth_fixed.png b/docs/basic/images/sql_function/sql_azimuth_fixed.png
new file mode 100644
index 000000000..983371d40
Binary files /dev/null and b/docs/basic/images/sql_function/sql_azimuth_fixed.png differ
diff --git a/docs/basic/images/sql_function/sql_route_geom.png b/docs/basic/images/sql_function/sql_route_geom.png
new file mode 100644
index 000000000..38866b71f
Binary files /dev/null and b/docs/basic/images/sql_function/sql_route_geom.png differ
diff --git a/docs/basic/images/sql_function/sql_route_geom_detail.png b/docs/basic/images/sql_function/sql_route_geom_detail.png
new file mode 100644
index 000000000..f11713d49
Binary files /dev/null and b/docs/basic/images/sql_function/sql_route_geom_detail.png differ
diff --git a/docs/basic/images/sql_function/sql_route_names.png b/docs/basic/images/sql_function/sql_route_names.png
new file mode 100644
index 000000000..532164c9f
Binary files /dev/null and b/docs/basic/images/sql_function/sql_route_names.png differ
diff --git a/docs/basic/images/sql_function/sql_route_readable.png b/docs/basic/images/sql_function/sql_route_readable.png
new file mode 100644
index 000000000..b064852c4
Binary files /dev/null and b/docs/basic/images/sql_function/sql_route_readable.png differ
diff --git a/docs/basic/sql_function.rst b/docs/basic/sql_function.rst
index 81dbb2c65..e6c0ef517 100644
--- a/docs/basic/sql_function.rst
+++ b/docs/basic/sql_function.rst
@@ -11,7 +11,7 @@
 SQL function
 ###############################################################################
 
-.. image:: images/pedestrian/pedestrian_one_to_one.png
+.. image:: images/sql_function/sql_route_names.png
   :scale: 25%
   :align: center
 
@@ -26,18 +26,26 @@ stored procedures or functions.
 Stored procedures or functions are an effective way to wrap application logic, in this case,
 related to routing logic and requirements.
 
-The application requirements
+The function requirements
 ===============================================================================
 
-A front end needs the following routing information:
-  - ``seq`` - A unique identifier of the rows
-  - ``id`` - The segment's identifier
-  - ``name`` - The segment's name
-  - ``length`` - The segment's length
-  - ``seconds`` - Number of seconds to traverse the segment
-  - ``azimuth`` - The azimuth of the segment
-  - ``route_geom`` - The routing geometry
-  - ``route_readable`` - The geometry in human readable form.
+The function will wrap ``pgr_dijkstra``.
+
+The function needs to work on any of the networks designed:
+
+- ``vehicle_net``
+- ``taxi_net``
+
+The function needs to return the following routing information:
+
+- ``seq`` - A unique identifier of the rows
+- ``id`` - The segment's identifier
+- ``name`` - The segment's name
+- ``length`` - The segment's length
+- ``seconds`` - Number of seconds to traverse the segment
+- ``azimuth`` - The azimuth of the segment
+- ``route_geom`` - The routing geometry
+- ``route_readable`` - The geometry in human readable form.
 
 .. rubric:: Design of the function
 
@@ -50,8 +58,8 @@ output columns:
 Parameter          Type      Description
 ================= ========= =================
 ``edges_subset``  REGCLASS  The table/view that is going to be used for processing
-``source_osm``    BIGINT    The OSM identifier of the `departure` location.
-``target_osm``    BIGINT    The OSM identifier of the `destination` location.
+``source``        BIGINT    The  identifier of the `departure` location.
+``target``        BIGINT    The  identifier of the `destination` location.
 ================= ========= =================
 
 .. rubric:: output columns
@@ -63,16 +71,13 @@ Name               Type      Description
 ``id``              BIGINT    The edge identifier.
 ``name``            TEXT      The name of the segment.
 ``seconds``         FLOAT     The number of seconds it takes to traverse the segment.
-``azimuth``         FLOAT     The azimuth of the segment.
 ``length``          FLOAT     The leng in meters of the segment.
+``azimuth``         FLOAT     The azimuth of the segment.
 ``route_readable``  TEXT      The geometry in human readable form.
 ``route_geom``      geometry  The geometry of the segment in the correct direction.
 ================== ========= =================
 
 
-.. note:: For the following exercises only ``vehicle_net`` will be used, but
-  you can test the queries with the other views.
-
 Additional information handling
 ===============================================================================
 
@@ -82,13 +87,13 @@ When the application needs additional information, like the name of the street,
 Exercise 1: Get additional information
 -------------------------------------------------------------------------------
 
-.. image:: images/sql_function/ch7-e4.png
+.. image:: images/sql_function/sql_route_names.png
   :width: 300pt
   :alt:  Route showing names
 
 .. rubric:: Problem
 
-* From |ch7_place_1| to |ch7_place_2|, using OSM identifiers.
+* From |ch7_place_1| to |ch7_place_2|
 * Get the following information:
 
   * ``seq``
@@ -99,23 +104,28 @@ Exercise 1: Get additional information
 
 .. rubric:: Solution
 
-* The columns asked (line **2**).
-* Rename ``pgr_dijkstra`` results to application requirements names. (line **4**).
-* ``LEFT JOIN`` the results with ``vehicle_net`` to get the additional information. (line **9**)
+* The function returns the columns asked. (line **4**)
+* Rename ``pgr_dijkstra`` results to application requirements names. (line
+  **12**).
+* ``LEFT JOIN`` the results with ``vehicle_net`` to get the additional
+  information. (line **17**)
+
+  * ``LEFT`` to include the row with ``id = -1`` because it does not exist on
+    ``vehicle_net``
 
-  * ``LEFT`` to include the row with ``id = -1`` because it does not
-    exist on ``vehicle_net``
+* Test from |ch7_id_1| to |ch7_id_2| on ``vehicle_net``. (Last line)
 
 .. literalinclude:: ../scripts/basic/sql_function/sql_function.sql
-  :language: sql
-  :linenos:
-  :emphasize-lines: 2, 4,9
-  :start-after: exercise_7_5.txt
-  :end-before: exercise_7_6.txt
+   :language: sql
+   :linenos:
+   :force:
+   :emphasize-lines: 4,12,17
+   :start-after: get_more_info.txt
+   :end-before: get_read_geom.txt
 
 .. collapse:: Query results
 
-  .. literalinclude:: ../scripts/basic/sql_function/exercise_7_5.txt
+  .. literalinclude:: ../scripts/basic/sql_function/get_more_info.txt
 
 
 Geometry handling
@@ -129,7 +139,7 @@ with PostGIS functions.
 Exercise 2: Route geometry (human readable)
 -------------------------------------------------------------------------------
 
-.. image:: images/sql_function/ch7-e4.png
+.. image:: images/sql_function/sql_route_readable.png
   :width: 300pt
   :alt: From |ch7_place_1| to |ch7_place_2|
 
@@ -141,48 +151,36 @@ Route from the |ch7_place_1| to |ch7_place_2|
 
   * geometry ``geom`` in human readable form named as ``route_readable``
 
-.. tip::
-
-  ``WITH`` provides a way to write auxiliary statements in larger queries.
-  It can be thought of as defining temporary tables that exist just for one query.
-
 .. rubric:: Solution
 
-* The routing query named ``results`` in a WITH clause. (lines **2** to **5**)
-* The results from the previous exercise. (lines **8** and **9**)
-
-  .. note:: For result reading purposes, the result columns from the previous
-     are in a comment. Uncomment to see the complete results for the problem.
-
+* The function returns ``route_readable``. (line **6**)
+* The routing query named ``results`` in a WITH clause. (line **11**)
 * The ``geom`` processed with ``ST_AsText`` to get the human readable form.
-  (line **12**)
-
-  * Renaming the result to ``route_readable``
-
-* The ``LEFT JOIN`` with ``vehicle_net``. (line **14**)
-
+  (line **19**).
+* Test from |ch7_id_1| to |ch7_id_2| on ``vehicle_net``. (Last line)
 
 .. literalinclude:: ../scripts/basic/sql_function/sql_function.sql
-  :language: sql
-  :linenos:
-  :emphasize-lines: 2-5,8-9,12,14
-  :start-after: exercise_7_6.txt
-  :end-before: exercise_7_7.txt
+   :language: sql
+   :linenos:
+   :force:
+   :emphasize-lines: 6,11,19
+   :start-after: get_read_geom.txt
+   :end-before: get_geom.txt
 
 .. exercise 2 results
 
 .. collapse:: Query results
 
-  .. literalinclude:: ../scripts/basic/sql_function/exercise_7_6.txt
+  .. literalinclude:: ../scripts/basic/sql_function/get_read_geom.txt
 
 
 
 Exercise 3: Route geometry (binary format)
 -------------------------------------------------------------------------------
 
-.. image:: images/sql_function/ch7-e6.png
+.. image:: images/sql_function/sql_route_geom.png
   :width: 300pt
-  :alt: From |ch7_place_1| to |ch7_place_2| showing arrows.
+  :alt: From |ch7_place_1| to |ch7_place_2|
 
 .. rubric:: Problem
 
@@ -194,28 +192,27 @@ Route from the |ch7_place_1| to |ch7_place_2|
 
 .. rubric:: Solution
 
-* The query from the previous exercise is used
-* The ``SELECT`` clause also contains:
-
-  * The ``geom`` including the renaming (line **9**)
+* The function returns ``route_geom``. (line **7**)
+* The geometry ``geom`` of the segments (line **21**)
+* Test from |ch7_id_1| to |ch7_id_2| on ``vehicle_net``. (Last line)
 
 
 .. literalinclude:: ../scripts/basic/sql_function/sql_function.sql
-  :language: sql
-  :emphasize-lines: 10
-  :linenos:
-  :start-after: exercise_7_7.txt
-  :end-before: wrong_directionality.txt
+   :language: sql
+   :emphasize-lines: 7,21
+   :force:
+   :linenos:
+   :start-after: get_geom.txt
+   :end-before: wrong_directionality.txt
 
 .. collapse:: Query results
 
-  .. literalinclude:: ../scripts/basic/sql_function/exercise_7_7.txt
-
+  .. literalinclude:: ../scripts/basic/sql_function/get_geom.txt
 
 Exercise 4: Route geometry directionality
 -------------------------------------------------------------------------------
 
-.. image:: images/sql_function/ch7-e8.png
+.. image:: images/sql_function/sql_route_geom_detail.png
   :width: 300pt
   :alt: From |ch7_place_1| to |ch7_place_2|
 
@@ -228,14 +225,12 @@ starting point of the next geometry
 * Inspecting the detail of the results of `Exercise 2: Route geometry (human
   readable)`_
 
-  * Rows **59** to **61** do not match that criteria
-
 .. collapse:: Query: Rows where criteria is not met
 
   .. literalinclude:: ../scripts/basic/sql_function/sql_function.sql
     :language: sql
     :start-after: wrong_directionality.txt
-    :end-before: exercise_7_8.txt
+    :end-before: fix_directionality.txt
 
 .. literalinclude:: ../scripts/basic/sql_function/wrong_directionality.txt
   :language: sql
@@ -255,38 +250,38 @@ Route from the |ch7_place_1| to |ch7_place_2|
 To get the correct direction some geometries need to be reversed:
 
 * Reversing a geometry will depend on the ``node`` column of the query to
-  Dijkstra (line **2**)
+  Dijkstra.
 
 * A conditional ``CASE`` statement that returns the geometry in human readable
   form:
 
-  * Of the geometry when ``node`` is the ``source`` column. (line **11**)
-  * Of the reversed geometry when ``node`` is not the ``source`` column. (line **12**)
+  * Of the geometry when ``node`` is the ``source`` column.
+  * Of the reversed geometry when ``node`` is not the ``source`` column.
 
 * A conditional ``CASE`` statement that returns:
 
-  * The geometry when ``node`` is the ``source`` column. (line **17**)
-  * The reversed geometry when ``node`` is not the ``source`` column. (line **16**)
+  * The geometry when ``node`` is the ``source`` column.
+  * The reversed geometry when ``node`` is not the ``source`` column.
 
 .. literalinclude:: ../scripts/basic/sql_function/sql_function.sql
-  :language: sql
-  :linenos:
-  :emphasize-lines: 3,9,11,12,16,17
-  :start-after: exercise_7_8.txt
-  :end-before: good_directionality.txt
+   :language: sql
+   :linenos:
+   :force:
+   :start-after: fix_directionality.txt
+   :end-before: good_directionality.txt
 
 .. collapse:: results
 
-  .. literalinclude:: ../scripts/basic/sql_function/exercise_7_8.txt
+  .. literalinclude:: ../scripts/basic/sql_function/fix_directionality.txt
 
-Inspecting some the problematic rows, the directionality has been fixed.
+Inspecting the problematic rows, the directionality has been fixed.
 
 .. collapse:: Query: Rows where criteria is not met
 
   .. literalinclude:: ../scripts/basic/sql_function/sql_function.sql
     :language: sql
     :start-after: good_directionality.txt
-    :end-before: exercise_7_9.txt
+    :end-before: use_directionality.txt
 
 .. literalinclude:: ../scripts/basic/sql_function/good_directionality.txt
 
@@ -294,7 +289,7 @@ Inspecting some the problematic rows, the directionality has been fixed.
 Exercise 5: Using the geometry
 -------------------------------------------------------------------------------
 
-.. image:: images/sql_function/ch7-e7.png
+.. image:: images/sql_function/sql_azimuth_fixed.png
   :width: 300pt
   :alt: From |ch7_place_1| to the |ch7_place_2| show azimuth
 
@@ -308,106 +303,44 @@ This exercise will make use an additional function ``ST_Azimuth``.
 
 Modify the query from the previous exercise
 
-* Additionally obtain the azimuth of the correct geometry.
-* Because ``vehicle_net`` and the other 2 views are sub graphs of ``ways``, do
-  the ``JOIN`` with ``ways``.
+* Additionally obtain the azimuth in degrees of the corrected geometry.
 
 .. rubric:: Solution
 
-* Move the query that gets the additional information into the ``WITH`` statement.
-
-  * Name it ``additional``. (line **6**)
-
-* The ``ways`` table geometry name is ``the_geom``.
-* Final ``SELECT`` statements gets:
-
-  * Calculates the azimuth of ``route_geom``. (line **27**)
+* The function returns ``aximuth``. (line **8**)
+* The query from previous exercise is wrapped under additional subquery. (line
+  **18**)
+* The ``azimuth`` is processed in degrees. (line **35**).
+* Test from |ch7_id_1| to |ch7_id_2| on ``vehicle_net``. (Last line)
 
 .. literalinclude:: ../scripts/basic/sql_function/sql_function.sql
-  :language: sql
-  :emphasize-lines: 6,27
-  :start-after: exercise_7_9.txt
-  :end-before: exercise_7_10.txt
+   :language: sql
+   :force:
+   :linenos:
+   :emphasize-lines: 8,18,35
+   :start-after: use_directionality.txt
+   :end-before: using_fn1.txt
 
 .. collapse:: results
 
-  .. literalinclude:: ../scripts/basic/sql_function/exercise_7_9.txt
-
-Creating the Function
-===============================================================================
-
-The following function simplifies (and sets default values) when it calls the
-shortest path Dijkstra function.
-
-.. warning::
-  pgRouting uses heavely function overloading:
-
-  * Avoid creating functions with a name of a pgRouting routing function
-  * Avoid the name of a function to start with `pgr_`, `_pgr` or `ST_`
+  .. literalinclude:: ../scripts/basic/sql_function/use_directionality.txt
 
-Exercise 6: Function for an application
+Exercise 6: Using the function
 -------------------------------------------------------------------------------
 
-.. rubric:: Problem
-
-Putting all together in a SQL function
-
-* function name ``wrk_dijkstra``
-* Should work for any given view.
-
-  * Allow a view as a parameter
-  * A table can be used if the columns have the correct names.
-
-* ``source`` and ``target`` are in terms of ``osm_id``.
-* The result should meet the requirements indicated at the beginning of the chapter
-
-
-.. rubric:: Solution
-
-* The signature of the function:
-
-  * The input parameters are from line **4** to **6**.
-  * The output columns are from line **7** to **14** (not highlighted).
-  * The function returns a set. (line **16**)
-
-.. literalinclude:: ../scripts/basic/sql_function/sql_function.sql
-  :emphasize-lines: 4-6,16
-  :language: sql
-  :start-after: exercise_7_10.txt
-  :end-before: BODY
-
-* The body of the function:
-
-  * Appending the view name on line **7** in the ``SELECT`` query to ``pgr_dijkstra``.
-  * Using the data to get the route from ``source`` to ``target``. (line **8**)
-  * The ``JOIN`` with ``ways`` is necessary, as the views are subset of ``ways`` (line **25**)
-
-
-.. literalinclude:: ../scripts/basic/sql_function/sql_function.sql
-  :emphasize-lines: 7,8,25
-  :language: sql
-  :force:
-  :start-after: RETURNS SETOF
-  :end-before: using_fn1.txt
-
-.. collapse:: Response of command
-
-  .. literalinclude:: ../scripts/basic/sql_function/exercise_7_10.txt
-
-.. _exercise-ch7-e10:
-
-Exercise 7: Using the function
--------------------------------------------------------------------------------
-
-.. rubric:: Problem
+Try the function with a combination of the interesting places:
 
-* Test the function with the three views
-* From the |ch7_place_1| to the |ch7_place_2| using the OSM identifier
+* |id_1| |place_1|
+* |id_2| |place_2|
+* |id_3| |place_3|
+* |id_4| |place_4|
+* |id_5| |place_5|
 
-.. rubric:: Solution
+Using different networks:
 
-* Use the function on the ``SELECT`` statement
-* The first parameter changes based on the view to be tested
+- ``vehicle_net``
+- ``taxi_net``
+- ``walk_net``
 
 Names of the streets in the route
 
@@ -431,7 +364,7 @@ Total seconds spent in each street
 
   .. literalinclude:: ../scripts/basic/sql_function/using_fn2.txt
 
-Get all the information of the route
+Why it does not fully work with ``walk_net``?
 
 .. literalinclude:: ../scripts/basic/sql_function/sql_function.sql
   :language: sql
@@ -440,12 +373,3 @@ Get all the information of the route
 .. collapse:: Query results
 
   .. literalinclude:: ../scripts/basic/sql_function/using_fn3.txt
-
-
-Try the function with a combination of the interesting places:
-
-* |osmid_1| |place_1|
-* |osmid_2| |place_2|
-* |osmid_3| |place_3|
-* |osmid_4| |place_4|
-* |osmid_5| |place_5|
diff --git a/docs/conf.py b/docs/conf.py
index abf914b26..83dde6625 100755
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -299,8 +299,8 @@ def setup(app):
 .. |place_3| replace:: @PLACE_3@
 .. |place_4| replace:: @PLACE_4@
 .. |place_5| replace:: @PLACE_5@
-.. |ch7_osmid_1| replace:: ``@CH7_OSMID_1@``
-.. |ch7_osmid_2| replace:: ``@CH7_OSMID_2@``
+.. |ch7_id_1| replace:: ``@CH7_ID_1@``
+.. |ch7_id_2| replace:: ``@CH7_ID_2@``
 .. |ch7_place_1| replace:: @CH7_PLACE_1@
 .. |ch7_place_2| replace:: @CH7_PLACE_2@
 """
diff --git a/docs/scripts/basic/sql_function/CMakeLists.txt b/docs/scripts/basic/sql_function/CMakeLists.txt
index 825fdb5b8..7b338e8fc 100644
--- a/docs/scripts/basic/sql_function/CMakeLists.txt
+++ b/docs/scripts/basic/sql_function/CMakeLists.txt
@@ -6,26 +6,23 @@ add_custom_target(basic_sql_function_scripts)
 configure_file(sql_function.sql sql_function.sql)
 configure_file(images.sql images.sql)
 
-#----------------------------------------------
-# Generating the results files
-#---------------------------------------------
-
 add_custom_command(
   TARGET basic_sql_function_scripts
   PRE_BUILD
   BYPRODUCTS
-    exercise_7_1.txt
-    exercise_7_2.txt
-    exercise_7_3.txt
-    exercise_7_4.txt
-    exercise_7_5.txt
-    exercise_7_6.txt
-    exercise_7_7.txt
-    exercise_7_8.txt
-    exercise_7_9.txt
-    exercise_7_10.txt
-    exercise_7_11.txt
+
+    get_more_info.txt
+    get_read_geom.txt
+    get_geom.txt
+    wrong_directionality.txt
+    fix_directionality.txt
+    good_directionality.txt
+    use_directionality.txt
+    using_fn1.txt
+    using_fn2.txt
+    using_fn3.txt
+
   COMMAND psql -d city_routing -f sql_function.sql
   COMMAND psql -d city_routing -f images.sql
   COMMENT "running sql function scripts"
-  )
+)
diff --git a/docs/scripts/basic/sql_function/images.sql b/docs/scripts/basic/sql_function/images.sql
index c9ee90a58..7e8a4ada2 100644
--- a/docs/scripts/basic/sql_function/images.sql
+++ b/docs/scripts/basic/sql_function/images.sql
@@ -1,69 +1,9 @@
-DROP FUNCTION IF EXISTS wrk_image;
-DROP VIEW IF EXISTS chap7_view;
-
-CREATE OR REPLACE FUNCTION wrk_image(
-  IN edges_subset REGCLASS,
-  IN source BIGINT,  -- in terms of osm_id
-  IN target BIGINT,  -- in terms of osm_id
-  OUT seq INTEGER,
-  OUT id BIGINT,
-  OUT node BIGINT,
-  OUT source BIGINT,
-  OUT seconds FLOAT,
-  OUT name TEXT,
-  OUT length_m FLOAT,
-  OUT geom geometry,
-  OUT geom_readable TEXT,
-  OUT azimuth_geom FLOAT,
-  OUT route_readable TEXT,
-  OUT route_geom geometry,
-  OUT azimuth FLOAT
-)
-RETURNS SETOF record AS
-$BODY$
-WITH
-results AS (
-  SELECT seq, edge AS id, cost AS seconds,
-  node
-  FROM pgr_dijkstra(
-    'SELECT * FROM ' || edges_subset,
-    source, target)
-),
-additional AS (
-  SELECT
-  seq, id, node, source_osm, seconds,
-  name, length_m,
-  the_geom,
-  ST_AsText(the_geom),
-  degrees(ST_azimuth(ST_StartPoint(the_geom), ST_EndPoint(the_geom))) AS azimuth_geom,
-  CASE
-    WHEN node = source_osm THEN ST_AsText(the_geom)
-          ELSE ST_AsText(ST_Reverse(the_geom))
-    END AS route_readable,
-
-  CASE
-    WHEN node = source_osm THEN the_geom
-          ELSE ST_Reverse(the_geom)
-    END AS route_geom
-
-    FROM results
-    LEFT JOIN ways ON (gid = id)
-)
-SELECT *,
-degrees(ST_azimuth(ST_StartPoint(route_geom), ST_EndPoint(route_geom))) AS azimuth
-FROM additional
-ORDER BY seq;
-$BODY$
-LANGUAGE 'sql';
 
 CREATE OR REPLACE VIEW using_vehicle AS
 SELECT *
-FROM wrk_image('vehicle_net',  @CH7_OSMID_1@, @CH7_OSMID_2@);
+FROM wrk_dijkstra('vehicle_net',  @CH7_ID_1@, @CH7_ID_2@);
 
-CREATE OR REPLACE VIEW using_taxi AS
-SELECT *
-FROM wrk_image('taxi_net',  @CH7_OSMID_1@, @CH7_OSMID_2@);
-
-CREATE OR REPLACE VIEW using_walk AS
-SELECT *
-FROM wrk_image('walk_net',  @CH7_OSMID_1@, @CH7_OSMID_2@);
+CREATE OR REPLACE VIEW sql_route_geom AS
+SELECT seq, id, geom
+FROM wrk_dijkstra('vehicle_net',  @CH7_ID_1@, @CH7_ID_2@)
+JOIN vehicle_net USING (id);
diff --git a/docs/scripts/basic/sql_function/sql_function.sql b/docs/scripts/basic/sql_function/sql_function.sql
index 672b94ce0..5831941e6 100644
--- a/docs/scripts/basic/sql_function/sql_function.sql
+++ b/docs/scripts/basic/sql_function/sql_function.sql
@@ -2,212 +2,212 @@
 DROP FUNCTION IF EXISTS wrk_dijkstra(regclass, bigint, bigint);
 
 
-\o exercise_7_5.txt
+\o get_more_info.txt
 
+-- DROP FUNCTION wrk_dijkstra(regclass, bigint, bigint);
+
+CREATE OR REPLACE FUNCTION wrk_dijkstra(
+  IN edges_subset REGCLASS, IN source BIGINT, IN target BIGINT,
+  OUT seq INTEGER, OUT id BIGINT, OUT seconds FLOAT, OUT name TEXT, OUT length FLOAT
+)
+RETURNS SETOF record AS
+$BODY$
 SELECT
-  seq, id, seconds, name, length
+seq, id, seconds, name, length
 FROM (
   SELECT seq, edge AS id, node, cost AS seconds
   FROM pgr_dijkstra(
-      'SELECT * FROM vehicle_net',
-      @CH7_OSMID_1@, @CH7_OSMID_2@)
-  ) AS results
+    'SELECT * FROM ' || $1,
+    source, target)
+) AS results
 LEFT JOIN vehicle_net USING (id)
 ORDER BY seq;
+$BODY$
+LANGUAGE SQL;
+
+SELECT * FROM wrk_dijkstra('vehicle_net', @CH7_ID_1@, @CH7_ID_2@);
 
-\o exercise_7_6.txt
+\o get_read_geom.txt
 
+DROP FUNCTION wrk_dijkstra(regclass, bigint, bigint);
+
+CREATE OR REPLACE FUNCTION wrk_dijkstra(
+  IN edges_subset REGCLASS, IN source BIGINT, IN target BIGINT,
+  OUT seq INTEGER, OUT id BIGINT, OUT seconds FLOAT, OUT name TEXT, OUT length FLOAT,
+  OUT route_readable TEXT
+)
+RETURNS SETOF record AS
+$BODY$
 WITH
-results AS (  -- line 2
+results AS (
   SELECT seq, edge AS id, node, cost AS seconds
-  FROM pgr_dijkstra('SELECT * FROM vehicle_net', @CH7_OSMID_1@, @CH7_OSMID_2@)
+  FROM pgr_dijkstra(
+    'SELECT * FROM ' || $1,
+    source, target)
 )
 SELECT
-  -- from previous excercise
-  seq,                            -- line 8
-  -- id, seconds, name, length,
-
-  -- additionally get
-  ST_AsText(geom) AS route_readable  --line 12
+  seq, id, seconds, name, length,
+  ST_AsText(geom)
 FROM results
-LEFT JOIN vehicle_net USING (id)  -- line 14
+LEFT JOIN vehicle_net USING (id)
 ORDER BY seq;
+$BODY$
+LANGUAGE SQL;
+
+SELECT seq, route_readable FROM wrk_dijkstra('vehicle_net', @CH7_ID_1@, @CH7_ID_2@);
+
+\o get_geom.txt
 
-\o exercise_7_7.txt
+DROP FUNCTION wrk_dijkstra(regclass, bigint, bigint);
 
-WITH results AS (
+CREATE OR REPLACE FUNCTION wrk_dijkstra(
+  IN edges_subset REGCLASS, IN source BIGINT, IN target BIGINT,
+  OUT seq INTEGER, OUT id BIGINT, OUT seconds FLOAT, OUT name TEXT, OUT length FLOAT,
+  OUT route_readable TEXT,
+  OUT route_geom geometry
+)
+RETURNS SETOF record AS
+$BODY$
+WITH
+results AS (
   SELECT seq, edge AS id, node, cost AS seconds
-  FROM pgr_dijkstra('SELECT * FROM vehicle_net', @CH7_OSMID_1@, @CH7_OSMID_2@)
-  )
+  FROM pgr_dijkstra(
+    'SELECT * FROM ' || $1,
+    source, target)
+)
 SELECT
-  -- from previous excercise
-  seq,
-  -- id, seconds, name, length, ST_AsText(geom) AS route_readable,
-
-  -- additionally get
-  geom AS route_geom
+  seq, id, seconds, name, length,
+  ST_AsText(geom),
+  geom
 FROM results
-LEFT JOIN vehicle_net
-  USING (id)
+LEFT JOIN vehicle_net USING (id)
 ORDER BY seq;
+$BODY$
+LANGUAGE SQL;
+
+SELECT seq, route_geom FROM wrk_dijkstra('vehicle_net', @CH7_ID_1@, @CH7_ID_2@);
 
 \o wrong_directionality.txt
 
 WITH
 results AS (
-  SELECT seq, edge AS id, node, cost AS seconds
-  FROM pgr_dijkstra('SELECT * FROM vehicle_net', @CH7_OSMID_1@, @CH7_OSMID_2@)
+  SELECT seq, id, route_geom
+  FROM wrk_dijkstra('vehicle_net', @CH7_ID_1@, @CH7_ID_2@)
 ),
 compare AS (
   SELECT seq, id, lead(seq) over(ORDER BY seq) AS next_seq,
-  ST_AsText(ST_endPoint(geom)) AS id_end,
-  ST_AsText(ST_startPoint(lead(geom) over(ORDER BY seq))) AS next_id_start
+  ST_AsText(ST_endPoint(route_geom)) AS id_end,
+  ST_AsText(ST_startPoint(lead(route_geom) over(ORDER BY seq))) AS next_id_start
 
-  FROM results LEFT JOIN vehicle_net USING (id)
+  FROM results
   ORDER BY seq)
 SELECT * FROM compare WHERE id_end != next_id_start;
 
-\o exercise_7_8.txt
+\o fix_directionality.txt
+
+DROP FUNCTION wrk_dijkstra(regclass, bigint, bigint);
 
-WITH results AS (
+CREATE OR REPLACE FUNCTION wrk_dijkstra(
+  IN edges_subset REGCLASS, IN source BIGINT, IN target BIGINT,
+  OUT seq INTEGER, OUT id BIGINT, OUT seconds FLOAT, OUT name TEXT, OUT length FLOAT,
+  OUT route_readable TEXT,
+  OUT route_geom geometry
+)
+RETURNS SETOF record AS
+$BODY$
+WITH
+results AS (
   SELECT seq, edge AS id, node, cost AS seconds
-  FROM pgr_dijkstra('SELECT * FROM vehicle_net', @CH7_OSMID_1@, @CH7_OSMID_2@)
-  )
+  FROM pgr_dijkstra(
+    'SELECT * FROM ' || $1,
+    source, target)
+)
 SELECT
-  -- from previous excercise
-  seq,
-  -- id, seconds, name, length,
-
-  -- fixing the directionality
+  seq, id, seconds, name, length,
   CASE
       WHEN node = source THEN ST_AsText(geom)
       ELSE ST_AsText(ST_Reverse(geom))
-  END AS route_readable,
+  END,
 
   CASE
       WHEN node = source THEN geom
       ELSE ST_Reverse(geom)
-  END AS route_geom
-
+  END
 FROM results
 LEFT JOIN vehicle_net USING (id)
 ORDER BY seq;
+$BODY$
+LANGUAGE SQL;
+
+SELECT seq, route_readable FROM wrk_dijkstra('vehicle_net', @CH7_ID_1@, @CH7_ID_2@);
 
 \o good_directionality.txt
 
 WITH
 results AS (
-  SELECT seq, edge AS id, node, cost AS seconds
-  FROM pgr_dijkstra('SELECT * FROM vehicle_net', 5661895682, 10982869752)
-),
-fix AS (
-  SELECT seq, id,
-  CASE
-      WHEN node = source THEN geom
-      ELSE ST_Reverse(geom)
-  END AS geom
-FROM results LEFT JOIN vehicle_net USING (id)
+  SELECT seq, id, seconds, route_geom
+  FROM wrk_dijkstra('vehicle_net', @CH7_ID_1@, @CH7_ID_2@)
 ),
 compare AS (
-  SELECT seq, id, lead(geom) over(ORDER BY seq) AS next_id,
-  ST_AsText(ST_endPoint(geom)) AS id_end, ST_AsText(ST_startPoint(lead(geom) over(ORDER BY seq))) AS next_id_start
-
-FROM fix
+  SELECT seq, id, lead(route_geom) over(ORDER BY seq) AS next_id,
+  ST_AsText(ST_endPoint(route_geom)) AS id_end,
+  ST_AsText(ST_startPoint(lead(route_geom) over(ORDER BY seq))) AS next_id_start
+FROM results
 ORDER BY seq)
 SELECT * FROM compare WHERE id_end != next_id_start;
 
-\o exercise_7_9.txt
+\o use_directionality.txt
+
+DROP FUNCTION wrk_dijkstra(regclass, bigint, bigint);
 
+CREATE OR REPLACE FUNCTION wrk_dijkstra(
+  IN edges_subset REGCLASS, IN source BIGINT, IN target BIGINT,
+  OUT seq INTEGER, OUT id BIGINT, OUT seconds FLOAT, OUT name TEXT, OUT length FLOAT,
+  OUT route_readable TEXT,
+  OUT route_geom geometry,
+  OUT azimuth FLOAT
+)
+RETURNS SETOF record AS
+$BODY$
 WITH
 results AS (
   SELECT seq, edge AS id, node, cost AS seconds
-  FROM pgr_dijkstra('SELECT * FROM vehicle_net', @CH7_OSMID_1@, @CH7_OSMID_2@)
-  ),
+  FROM pgr_dijkstra(
+    'SELECT * FROM ' || $1,
+    source, target)),
 additional AS (
   SELECT
-    seq, id, seconds, name, length,
-    CASE
-        WHEN node = source THEN ST_AsText(the_geom)
-        ELSE ST_AsText(ST_Reverse(the_geom))
-    END AS route_readable,
-
-    CASE
-        WHEN node = source THEN the_geom
-        ELSE ST_Reverse(the_geom)
-    END AS route_geom
+  seq, id, seconds, name, length,
+  CASE
+        WHEN node = source THEN ST_AsText(geom)
+        ELSE ST_AsText(ST_Reverse(geom))
+  END AS readable,
 
+  CASE
+        WHEN node = source THEN geom
+        ELSE ST_Reverse(geom)
+  END AS geom
   FROM results
-  LEFT JOIN ways ON (gid = id)
-)
-SELECT
-  seq,
-  -- from previous excercise
-  -- id, seconds, name, length, route_readable, route_geom
+  LEFT JOIN vehicle_net USING (id)
+  ORDER BY seq)
 
-  degrees(ST_azimuth(ST_StartPoint(route_geom), ST_EndPoint(route_geom))) AS azimuth
-FROM additional
-ORDER BY seq;
+SELECT *,
+  degrees(ST_azimuth(ST_StartPoint(geom), ST_EndPoint(geom))) AS azimuth
+FROM additional ORDER BY seq;
+$BODY$
+LANGUAGE SQL;
 
-\o exercise_7_10.txt
--- DROP FUNCTION wrk_dijkstra(regclass, bigint, bigint);
+SELECT seq, azimuth FROM wrk_dijkstra('vehicle_net', @CH7_ID_1@, @CH7_ID_2@);
 
-CREATE OR REPLACE FUNCTION wrk_dijkstra(
-        IN edges_subset REGCLASS,
-        IN source BIGINT,  -- in terms of osm_id
-        IN target BIGINT,  -- in terms of osm_id
-        OUT seq INTEGER,
-        OUT id BIGINT,
-        OUT seconds FLOAT,
-        OUT name TEXT,
-        OUT length_m FLOAT,
-        OUT route_readable TEXT,
-        OUT route_geom geometry,
-        OUT azimuth FLOAT
-    )
-    RETURNS SETOF record AS
-$BODY$
-  WITH
-  results AS (
-    SELECT seq, edge AS id, cost AS seconds,
-      node
-    FROM pgr_dijkstra(
-        'SELECT * FROM ' || edges_subset,
-        source, target)
-    ),
-  additional AS (
-    SELECT
-      seq, id, seconds,
-      name, length_m,
-      CASE
-          WHEN node = source THEN ST_AsText(the_geom)
-          ELSE ST_AsText(ST_Reverse(the_geom))
-      END AS route_readable,
-
-      CASE
-          WHEN node = source_osm THEN the_geom
-          ELSE ST_Reverse(the_geom)
-      END AS route_geom
-
-    FROM results
-    LEFT JOIN ways ON (gid = id)
-  )
-  SELECT *,
-    degrees(ST_azimuth(ST_StartPoint(route_geom), ST_EndPoint(route_geom))) AS azimuth
-  FROM additional
-  ORDER BY seq;
-$BODY$
-LANGUAGE 'sql';
 \o using_fn1.txt
 SELECT DISTINCT name
-FROM wrk_dijkstra('vehicle_net',  @CH7_OSMID_1@, @CH7_OSMID_2@);
+FROM wrk_dijkstra('vehicle_net',  @CH7_ID_1@, @CH7_ID_2@);
 
 \o using_fn2.txt
 SELECT name, sum(seconds)
-FROM wrk_dijkstra('taxi_net',  @CH7_OSMID_1@, @CH7_OSMID_2@)
+FROM wrk_dijkstra('taxi_net',  @CH7_ID_1@, @CH7_ID_2@)
 GROUP BY name;
 
 \o using_fn3.txt
 SELECT *
-FROM wrk_dijkstra('walk_net',  @CH7_OSMID_1@, @CH7_OSMID_2@);
-
-
+FROM wrk_dijkstra('walk_net',  @CH7_ID_1@, @CH7_ID_2@);
diff --git a/docs/scripts/configuration/osmid_configuration.sql b/docs/scripts/configuration/osmid_configuration.sql
index 501575d34..e8c879abb 100644
--- a/docs/scripts/configuration/osmid_configuration.sql
+++ b/docs/scripts/configuration/osmid_configuration.sql
@@ -19,3 +19,11 @@ SELECT 'ID_' || r, id from a;
 WITH a AS (SELECT 5 AS r, osm_id, id FROM ways_vertices_pgr
 WHERE osm_id = @OSMID_5@)
 SELECT 'ID_' || r, id from a;
+
+WITH a AS (SELECT 1 AS r, osm_id, id FROM ways_vertices_pgr
+WHERE osm_id = @CH7_ID_1@)
+SELECT 'CH7_ID_' || r, id from a;
+
+WITH a AS (SELECT 2 AS r, osm_id, id FROM ways_vertices_pgr
+WHERE osm_id = @CH7_ID_2@)
+SELECT 'CH7_ID_' || r, id from a;
diff --git a/locale/en/LC_MESSAGES/basic/sql_function.po b/locale/en/LC_MESSAGES/basic/sql_function.po
index d72b45775..717fe1ad4 100644
--- a/locale/en/LC_MESSAGES/basic/sql_function.po
+++ b/locale/en/LC_MESSAGES/basic/sql_function.po
@@ -9,7 +9,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: Workshop FOSS4G Belém 3.0\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2024-12-16 18:21+0000\n"
+"POT-Creation-Date: 2025-10-07 14:41+0000\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language: en\n"
@@ -18,7 +18,7 @@ msgstr ""
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=utf-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"Generated-By: Babel 2.16.0\n"
+"Generated-By: Babel 2.17.0\n"
 
 #: ../../build/docs/basic/sql_function.rst:12
 msgid "SQL function"
@@ -34,664 +34,520 @@ msgstr ""
 
 #: ../../build/docs/basic/sql_function.rst:22
 msgid ""
-"When developing for a `higher level` application, the requirements need "
-"to be represented in the SQL queries. As these SQL queries get more "
-"complex, it is desirable to store them in postgreSQL stored procedures or"
-" functions. Stored procedures or functions are an effective way to wrap "
-"application logic, in this case, related to routing logic and "
-"requirements."
+"When developing for a `higher level` application, the requirements need to "
+"be represented in the SQL queries. As these SQL queries get more complex, it "
+"is desirable to store them in postgreSQL stored procedures or functions. "
+"Stored procedures or functions are an effective way to wrap application "
+"logic, in this case, related to routing logic and requirements."
 msgstr ""
 
 #: ../../build/docs/basic/sql_function.rst:30
-msgid "The application requirements"
+msgid "The function requirements"
 msgstr ""
 
 #: ../../build/docs/basic/sql_function.rst:32
-msgid "A front end needs the following routing information:"
+msgid "The function will wrap ``pgr_dijkstra``."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:33
+#: ../../build/docs/basic/sql_function.rst:34
+msgid "The function needs to work on any of the networks designed:"
+msgstr ""
+
+#: ../../build/docs/basic/sql_function.rst:36
+#: ../../build/docs/basic/sql_function.rst:341
+msgid "``vehicle_net``"
+msgstr ""
+
+#: ../../build/docs/basic/sql_function.rst:37
+#: ../../build/docs/basic/sql_function.rst:342
+msgid "``taxi_net``"
+msgstr ""
+
+#: ../../build/docs/basic/sql_function.rst:39
+msgid "The function needs to return the following routing information:"
+msgstr ""
+
+#: ../../build/docs/basic/sql_function.rst:41
 msgid "``seq`` - A unique identifier of the rows"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:34
+#: ../../build/docs/basic/sql_function.rst:42
 msgid "``id`` - The segment's identifier"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:35
+#: ../../build/docs/basic/sql_function.rst:43
 msgid "``name`` - The segment's name"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:36
+#: ../../build/docs/basic/sql_function.rst:44
 msgid "``length`` - The segment's length"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:37
+#: ../../build/docs/basic/sql_function.rst:45
 msgid "``seconds`` - Number of seconds to traverse the segment"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:38
+#: ../../build/docs/basic/sql_function.rst:46
 msgid "``azimuth`` - The azimuth of the segment"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:39
+#: ../../build/docs/basic/sql_function.rst:47
 msgid "``route_geom`` - The routing geometry"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:40
+#: ../../build/docs/basic/sql_function.rst:48
 msgid "``route_readable`` - The geometry in human readable form."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:43
+#: ../../build/docs/basic/sql_function.rst:51
 msgid "Design of the function"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:44
+#: ../../build/docs/basic/sql_function.rst:52
 msgid ""
 "The function to be created ``wrk_dijkstra`` with the following input "
 "parameters and output columns:"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:48
+#: ../../build/docs/basic/sql_function.rst:56
 msgid "Input parameters"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:50
+#: ../../build/docs/basic/sql_function.rst:58
 msgid "Parameter"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:50
-#: ../../build/docs/basic/sql_function.rst:60
+#: ../../build/docs/basic/sql_function.rst:58
+#: ../../build/docs/basic/sql_function.rst:68
 msgid "Type"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:50
-#: ../../build/docs/basic/sql_function.rst:60
+#: ../../build/docs/basic/sql_function.rst:58
+#: ../../build/docs/basic/sql_function.rst:68
 msgid "Description"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:52
+#: ../../build/docs/basic/sql_function.rst:60
 msgid "``edges_subset``"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:52
+#: ../../build/docs/basic/sql_function.rst:60
 msgid "REGCLASS"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:52
+#: ../../build/docs/basic/sql_function.rst:60
 msgid "The table/view that is going to be used for processing"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:53
-msgid "``source_osm``"
+#: ../../build/docs/basic/sql_function.rst:61
+msgid "``source``"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:53
-#: ../../build/docs/basic/sql_function.rst:54
-#: ../../build/docs/basic/sql_function.rst:63
+#: ../../build/docs/basic/sql_function.rst:61
+#: ../../build/docs/basic/sql_function.rst:62
+#: ../../build/docs/basic/sql_function.rst:71
 msgid "BIGINT"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:53
-msgid "The OSM identifier of the `departure` location."
+#: ../../build/docs/basic/sql_function.rst:61
+msgid "The  identifier of the `departure` location."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:54
-msgid "``target_osm``"
+#: ../../build/docs/basic/sql_function.rst:62
+msgid "``target``"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:54
-msgid "The OSM identifier of the `destination` location."
+#: ../../build/docs/basic/sql_function.rst:62
+msgid "The  identifier of the `destination` location."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:58
+#: ../../build/docs/basic/sql_function.rst:66
 msgid "output columns"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:60
+#: ../../build/docs/basic/sql_function.rst:68
 msgid "Name"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:62
-#: ../../build/docs/basic/sql_function.rst:94
+#: ../../build/docs/basic/sql_function.rst:70
+#: ../../build/docs/basic/sql_function.rst:99
 msgid "``seq``"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:62
+#: ../../build/docs/basic/sql_function.rst:70
 msgid "INTEGER"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:62
+#: ../../build/docs/basic/sql_function.rst:70
 msgid "A unique number for each result row."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:63
-#: ../../build/docs/basic/sql_function.rst:95
+#: ../../build/docs/basic/sql_function.rst:71
+#: ../../build/docs/basic/sql_function.rst:100
 msgid "``id``"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:63
+#: ../../build/docs/basic/sql_function.rst:71
 msgid "The edge identifier."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:64
-#: ../../build/docs/basic/sql_function.rst:96
+#: ../../build/docs/basic/sql_function.rst:72
+#: ../../build/docs/basic/sql_function.rst:101
 msgid "``name``"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:64
-#: ../../build/docs/basic/sql_function.rst:68
+#: ../../build/docs/basic/sql_function.rst:72
+#: ../../build/docs/basic/sql_function.rst:76
 msgid "TEXT"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:64
+#: ../../build/docs/basic/sql_function.rst:72
 msgid "The name of the segment."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:65
-#: ../../build/docs/basic/sql_function.rst:97
+#: ../../build/docs/basic/sql_function.rst:73
+#: ../../build/docs/basic/sql_function.rst:102
 msgid "``seconds``"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:65
-#: ../../build/docs/basic/sql_function.rst:66
-#: ../../build/docs/basic/sql_function.rst:67
+#: ../../build/docs/basic/sql_function.rst:73
+#: ../../build/docs/basic/sql_function.rst:74
+#: ../../build/docs/basic/sql_function.rst:75
 msgid "FLOAT"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:65
+#: ../../build/docs/basic/sql_function.rst:73
 msgid "The number of seconds it takes to traverse the segment."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:66
-msgid "``azimuth``"
+#: ../../build/docs/basic/sql_function.rst:74
+#: ../../build/docs/basic/sql_function.rst:103
+msgid "``length``"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:66
-msgid "The azimuth of the segment."
+#: ../../build/docs/basic/sql_function.rst:74
+msgid "The leng in meters of the segment."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:67
-#: ../../build/docs/basic/sql_function.rst:98
-msgid "``length``"
+#: ../../build/docs/basic/sql_function.rst:75
+msgid "``azimuth``"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:67
-msgid "The leng in meters of the segment."
+#: ../../build/docs/basic/sql_function.rst:75
+msgid "The azimuth of the segment."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:68
+#: ../../build/docs/basic/sql_function.rst:76
 msgid "``route_readable``"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:68
+#: ../../build/docs/basic/sql_function.rst:76
 msgid "The geometry in human readable form."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:69
+#: ../../build/docs/basic/sql_function.rst:77
 msgid "``route_geom``"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:69
+#: ../../build/docs/basic/sql_function.rst:77
 msgid "geometry"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:69
+#: ../../build/docs/basic/sql_function.rst:77
 msgid "The geometry of the segment in the correct direction."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:73
-msgid ""
-"For the following exercises only ``vehicle_net`` will be used, but you "
-"can test the queries with the other views."
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:77
+#: ../../build/docs/basic/sql_function.rst:82
 msgid "Additional information handling"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:79
+#: ../../build/docs/basic/sql_function.rst:84
 msgid ""
 "When the application needs additional information, like the name of the "
 "street, ``JOIN`` the results with other tables."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:83
+#: ../../build/docs/basic/sql_function.rst:88
 msgid "Exercise 1: Get additional information"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:85
+#: ../../build/docs/basic/sql_function.rst:90
 msgid "Route showing names"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:90
-#: ../../build/docs/basic/sql_function.rst:137
-#: ../../build/docs/basic/sql_function.rst:188
-#: ../../build/docs/basic/sql_function.rst:244
-#: ../../build/docs/basic/sql_function.rst:308
-#: ../../build/docs/basic/sql_function.rst:352
-#: ../../build/docs/basic/sql_function.rst:403
+#: ../../build/docs/basic/sql_function.rst:95
+#: ../../build/docs/basic/sql_function.rst:147
+#: ../../build/docs/basic/sql_function.rst:186
+#: ../../build/docs/basic/sql_function.rst:239
+#: ../../build/docs/basic/sql_function.rst:303
 msgid "Problem"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:91
-msgid "From |ch7_place_1| to |ch7_place_2|, using OSM identifiers."
+#: ../../build/docs/basic/sql_function.rst:96
+#: ../../build/docs/basic/sql_function.rst:142
+#: ../../build/docs/basic/sql_function.rst:181
+#: ../../build/docs/basic/sql_function.rst:215
+msgid "From |ch7_place_1| to |ch7_place_2|"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:92
+#: ../../build/docs/basic/sql_function.rst:97
 msgid "Get the following information:"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:101
-#: ../../build/docs/basic/sql_function.rst:150
-#: ../../build/docs/basic/sql_function.rst:196
-#: ../../build/docs/basic/sql_function.rst:254
-#: ../../build/docs/basic/sql_function.rst:316
-#: ../../build/docs/basic/sql_function.rst:366
-#: ../../build/docs/basic/sql_function.rst:408
+#: ../../build/docs/basic/sql_function.rst:106
+#: ../../build/docs/basic/sql_function.rst:155
+#: ../../build/docs/basic/sql_function.rst:194
+#: ../../build/docs/basic/sql_function.rst:249
+#: ../../build/docs/basic/sql_function.rst:309
 msgid "Solution"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:102
-msgid "The columns asked (line **2**)."
+#: ../../build/docs/basic/sql_function.rst:107
+msgid "The function returns the columns asked. (line **4**)"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:103
+#: ../../build/docs/basic/sql_function.rst:108
 msgid ""
 "Rename ``pgr_dijkstra`` results to application requirements names. (line "
-"**4**)."
+"**12**)."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:104
+#: ../../build/docs/basic/sql_function.rst:110
 msgid ""
 "``LEFT JOIN`` the results with ``vehicle_net`` to get the additional "
-"information. (line **9**)"
+"information. (line **17**)"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:106
+#: ../../build/docs/basic/sql_function.rst:113
 msgid ""
-"``LEFT`` to include the row with ``id = -1`` because it does not exist on"
-" ``vehicle_net``"
+"``LEFT`` to include the row with ``id = -1`` because it does not exist on "
+"``vehicle_net``"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:122
+#: ../../build/docs/basic/sql_function.rst:116
+#: ../../build/docs/basic/sql_function.rst:160
+#: ../../build/docs/basic/sql_function.rst:197
+#: ../../build/docs/basic/sql_function.rst:314
+msgid "Test from |ch7_id_1| to |ch7_id_2| on ``vehicle_net``. (Last line)"
+msgstr ""
+
+#: ../../build/docs/basic/sql_function.rst:132
 msgid "Geometry handling"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:124
+#: ../../build/docs/basic/sql_function.rst:134
 msgid ""
 "From pgRouting point of view, the geometry is part of the additional "
-"information, needed on the results for an application. Therefore ``JOIN``"
-" the results with other tables that contain the geometry and for further "
+"information, needed on the results for an application. Therefore ``JOIN`` "
+"the results with other tables that contain the geometry and for further "
 "processing with PostGIS functions."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:130
+#: ../../build/docs/basic/sql_function.rst:140
 msgid "Exercise 2: Route geometry (human readable)"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:132
-#: ../../build/docs/basic/sql_function.rst:218
-msgid "From |ch7_place_1| to |ch7_place_2|"
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:138
-#: ../../build/docs/basic/sql_function.rst:189
-#: ../../build/docs/basic/sql_function.rst:245
+#: ../../build/docs/basic/sql_function.rst:148
+#: ../../build/docs/basic/sql_function.rst:187
+#: ../../build/docs/basic/sql_function.rst:240
 msgid "Route from the |ch7_place_1| to |ch7_place_2|"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:140
-#: ../../build/docs/basic/sql_function.rst:191
+#: ../../build/docs/basic/sql_function.rst:150
+#: ../../build/docs/basic/sql_function.rst:189
 msgid "Additionally to the previous exercise, get the"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:142
-msgid "geometry ``geom`` in human readable form named as ``route_readable``"
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:146
-msgid ""
-"``WITH`` provides a way to write auxiliary statements in larger queries. "
-"It can be thought of as defining temporary tables that exist just for one"
-" query."
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:151
-msgid ""
-"The routing query named ``results`` in a WITH clause. (lines **2** to "
-"**5**)"
-msgstr ""
-
 #: ../../build/docs/basic/sql_function.rst:152
-msgid "The results from the previous exercise. (lines **8** and **9**)"
+msgid "geometry ``geom`` in human readable form named as ``route_readable``"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:154
-msgid ""
-"For result reading purposes, the result columns from the previous are in "
-"a comment. Uncomment to see the complete results for the problem."
+#: ../../build/docs/basic/sql_function.rst:156
+msgid "The function returns ``route_readable``. (line **6**)"
 msgstr ""
 
 #: ../../build/docs/basic/sql_function.rst:157
-msgid ""
-"The ``geom`` processed with ``ST_AsText`` to get the human readable form."
-" (line **12**)"
+msgid "The routing query named ``results`` in a WITH clause. (line **11**)"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:160
-msgid "Renaming the result to ``route_readable``"
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:162
-msgid "The ``LEFT JOIN`` with ``vehicle_net``. (line **14**)"
+#: ../../build/docs/basic/sql_function.rst:158
+msgid ""
+"The ``geom`` processed with ``ST_AsText`` to get the human readable form. "
+"(line **19**)."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:181
+#: ../../build/docs/basic/sql_function.rst:179
 msgid "Exercise 3: Route geometry (binary format)"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:183
-msgid "From |ch7_place_1| to |ch7_place_2| showing arrows."
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:193
-#: ../../build/docs/basic/sql_function.rst:250
+#: ../../build/docs/basic/sql_function.rst:191
+#: ../../build/docs/basic/sql_function.rst:245
 msgid "``geom`` in binary format with the name ``route_geom``"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:197
-msgid "The query from the previous exercise is used"
+#: ../../build/docs/basic/sql_function.rst:195
+msgid "The function returns ``route_geom``. (line **7**)"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:198
-msgid "The ``SELECT`` clause also contains:"
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:200
-msgid "The ``geom`` including the renaming (line **9**)"
+#: ../../build/docs/basic/sql_function.rst:196
+msgid "The geometry ``geom`` of the segments (line **21**)"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:216
+#: ../../build/docs/basic/sql_function.rst:213
 msgid "Exercise 4: Route geometry directionality"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:222
+#: ../../build/docs/basic/sql_function.rst:219
 msgid ""
-"Visually, with the route displayed with arrows, it can be found that "
-"there are arrows that do not match the directionality of the route."
+"Visually, with the route displayed with arrows, it can be found that there "
+"are arrows that do not match the directionality of the route."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:225
+#: ../../build/docs/basic/sql_function.rst:222
 msgid ""
-"To have correct directionality, the ending point of a geometry must match"
-" the starting point of the next geometry"
+"To have correct directionality, the ending point of a geometry must match "
+"the starting point of the next geometry"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:228
+#: ../../build/docs/basic/sql_function.rst:225
 msgid ""
-"Inspecting the detail of the results of `Exercise 2: Route geometry "
-"(human readable)`_"
+"Inspecting the detail of the results of `Exercise 2: Route geometry (human "
+"readable)`_"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:231
-msgid "Rows **59** to **61** do not match that criteria"
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:247
+#: ../../build/docs/basic/sql_function.rst:242
 msgid "Fix the directionality of the geometries of the previous exercise"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:249
+#: ../../build/docs/basic/sql_function.rst:244
 msgid "``geom`` in human readable form named as ``route_readable``"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:251
+#: ../../build/docs/basic/sql_function.rst:246
 msgid "Both columns must have the geometry fixed for directionality."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:255
+#: ../../build/docs/basic/sql_function.rst:250
 msgid "To get the correct direction some geometries need to be reversed:"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:257
+#: ../../build/docs/basic/sql_function.rst:252
 msgid ""
 "Reversing a geometry will depend on the ``node`` column of the query to "
-"Dijkstra (line **2**)"
+"Dijkstra."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:260
+#: ../../build/docs/basic/sql_function.rst:255
 msgid ""
-"A conditional ``CASE`` statement that returns the geometry in human "
-"readable form:"
+"A conditional ``CASE`` statement that returns the geometry in human readable "
+"form:"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:263
-msgid "Of the geometry when ``node`` is the ``source`` column. (line **11**)"
+#: ../../build/docs/basic/sql_function.rst:258
+msgid "Of the geometry when ``node`` is the ``source`` column."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:264
-msgid ""
-"Of the reversed geometry when ``node`` is not the ``source`` column. "
-"(line **12**)"
+#: ../../build/docs/basic/sql_function.rst:259
+msgid "Of the reversed geometry when ``node`` is not the ``source`` column."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:266
+#: ../../build/docs/basic/sql_function.rst:261
 msgid "A conditional ``CASE`` statement that returns:"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:268
-msgid "The geometry when ``node`` is the ``source`` column. (line **17**)"
+#: ../../build/docs/basic/sql_function.rst:263
+msgid "The geometry when ``node`` is the ``source`` column."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:269
-msgid ""
-"The reversed geometry when ``node`` is not the ``source`` column. (line "
-"**16**)"
+#: ../../build/docs/basic/sql_function.rst:264
+msgid "The reversed geometry when ``node`` is not the ``source`` column."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:282
-msgid "Inspecting some the problematic rows, the directionality has been fixed."
+#: ../../build/docs/basic/sql_function.rst:277
+msgid "Inspecting the problematic rows, the directionality has been fixed."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:295
+#: ../../build/docs/basic/sql_function.rst:290
 msgid "Exercise 5: Using the geometry"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:297
+#: ../../build/docs/basic/sql_function.rst:292
 msgid "From |ch7_place_1| to the |ch7_place_2| show azimuth"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:302
+#: ../../build/docs/basic/sql_function.rst:297
 msgid ""
-"There are many geometry functions in PostGIS, the workshop already "
-"covered some of them like ``ST_AsText``, ``ST_Reverse``, ``ST_EndPoint``,"
-" etc. This exercise will make use an additional function ``ST_Azimuth``."
+"There are many geometry functions in PostGIS, the workshop already covered "
+"some of them like ``ST_AsText``, ``ST_Reverse``, ``ST_EndPoint``, etc. This "
+"exercise will make use an additional function ``ST_Azimuth``."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:309
+#: ../../build/docs/basic/sql_function.rst:304
 msgid "Modify the query from the previous exercise"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:311
-msgid "Additionally obtain the azimuth of the correct geometry."
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:312
-msgid ""
-"Because ``vehicle_net`` and the other 2 views are sub graphs of ``ways``,"
-" do the ``JOIN`` with ``ways``."
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:317
-msgid ""
-"Move the query that gets the additional information into the ``WITH`` "
-"statement."
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:319
-msgid "Name it ``additional``. (line **6**)"
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:321
-msgid "The ``ways`` table geometry name is ``the_geom``."
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:322
-msgid "Final ``SELECT`` statements gets:"
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:324
-msgid "Calculates the azimuth of ``route_geom``. (line **27**)"
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:337
-msgid "Creating the Function"
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:339
-msgid ""
-"The following function simplifies (and sets default values) when it calls"
-" the shortest path Dijkstra function."
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:343
-msgid "pgRouting uses heavely function overloading:"
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:345
-msgid "Avoid creating functions with a name of a pgRouting routing function"
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:346
-msgid "Avoid the name of a function to start with `pgr_`, `_pgr` or `ST_`"
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:349
-msgid "Exercise 6: Function for an application"
+#: ../../build/docs/basic/sql_function.rst:306
+msgid "Additionally obtain the azimuth in degrees of the corrected geometry."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:353
-msgid "Putting all together in a SQL function"
+#: ../../build/docs/basic/sql_function.rst:310
+msgid "The function returns ``aximuth``. (line **8**)"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:355
-msgid "function name ``wrk_dijkstra``"
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:356
-msgid "Should work for any given view."
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:358
-msgid "Allow a view as a parameter"
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:359
-msgid "A table can be used if the columns have the correct names."
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:361
-msgid "``source`` and ``target`` are in terms of ``osm_id``."
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:362
+#: ../../build/docs/basic/sql_function.rst:311
 msgid ""
-"The result should meet the requirements indicated at the beginning of the"
-" chapter"
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:367
-msgid "The signature of the function:"
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:369
-msgid "The input parameters are from line **4** to **6**."
+"The query from previous exercise is wrapped under additional subquery. (line "
+"**18**)"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:370
-msgid "The output columns are from line **7** to **14** (not highlighted)."
+#: ../../build/docs/basic/sql_function.rst:313
+msgid "The ``azimuth`` is processed in degrees. (line **35**)."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:371
-msgid "The function returns a set. (line **16**)"
+#: ../../build/docs/basic/sql_function.rst:329
+msgid "Exercise 6: Using the function"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:379
-msgid "The body of the function:"
+#: ../../build/docs/basic/sql_function.rst:331
+msgid "Try the function with a combination of the interesting places:"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:381
-msgid ""
-"Appending the view name on line **7** in the ``SELECT`` query to "
-"``pgr_dijkstra``."
+#: ../../build/docs/basic/sql_function.rst:333
+msgid "|id_1| |place_1|"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:382
-msgid ""
-"Using the data to get the route from ``source`` to ``target``. (line "
-"**8**)"
+#: ../../build/docs/basic/sql_function.rst:334
+msgid "|id_2| |place_2|"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:383
-msgid ""
-"The ``JOIN`` with ``ways`` is necessary, as the views are subset of "
-"``ways`` (line **25**)"
+#: ../../build/docs/basic/sql_function.rst:335
+msgid "|id_3| |place_3|"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:400
-msgid "Exercise 7: Using the function"
+#: ../../build/docs/basic/sql_function.rst:336
+msgid "|id_4| |place_4|"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:404
-msgid "Test the function with the three views"
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:405
-msgid "From the |ch7_place_1| to the |ch7_place_2| using the OSM identifier"
+#: ../../build/docs/basic/sql_function.rst:337
+msgid "|id_5| |place_5|"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:409
-msgid "Use the function on the ``SELECT`` statement"
+#: ../../build/docs/basic/sql_function.rst:339
+msgid "Using different networks:"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:410
-msgid "The first parameter changes based on the view to be tested"
+#: ../../build/docs/basic/sql_function.rst:343
+msgid "``walk_net``"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:412
+#: ../../build/docs/basic/sql_function.rst:345
 msgid "Names of the streets in the route"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:423
+#: ../../build/docs/basic/sql_function.rst:356
 msgid "Total seconds spent in each street"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:434
-msgid "Get all the information of the route"
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:445
-msgid "Try the function with a combination of the interesting places:"
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:447
-msgid "|osmid_1| |place_1|"
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:448
-msgid "|osmid_2| |place_2|"
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:449
-msgid "|osmid_3| |place_3|"
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:450
-msgid "|osmid_4| |place_4|"
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:451
-msgid "|osmid_5| |place_5|"
+#: ../../build/docs/basic/sql_function.rst:367
+msgid "Why it does not fully work with ``walk_net``?"
 msgstr ""
-
diff --git a/locale/pot/basic/sql_function.pot b/locale/pot/basic/sql_function.pot
index 234cbb8f9..4810bf209 100644
--- a/locale/pot/basic/sql_function.pot
+++ b/locale/pot/basic/sql_function.pot
@@ -1,14 +1,14 @@
 # SOME DESCRIPTIVE TITLE.
-# Copyright (C) 2010-2024 pgRouting Developers
-# This file is distributed under the same license as the Workshop FOSS4G Belém package.
+# Copyright (C) 2010-2025 pgRouting Developers
+# This file is distributed under the same license as the Workshop FOSS4G Auckland package.
 # FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
 #
 #, fuzzy
 msgid ""
 msgstr ""
-"Project-Id-Version: Workshop FOSS4G Belém 3.0\n"
+"Project-Id-Version: Workshop FOSS4G Auckland 3.1\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2024-12-16 18:21+0000\n"
+"POT-Creation-Date: 2025-10-07 14:41+0000\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -33,598 +33,481 @@ msgid "When developing for a `higher level` application, the requirements need t
 msgstr ""
 
 #: ../../build/docs/basic/sql_function.rst:30
-msgid "The application requirements"
+msgid "The function requirements"
 msgstr ""
 
 #: ../../build/docs/basic/sql_function.rst:32
-msgid "A front end needs the following routing information:"
+msgid "The function will wrap ``pgr_dijkstra``."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:33
+#: ../../build/docs/basic/sql_function.rst:34
+msgid "The function needs to work on any of the networks designed:"
+msgstr ""
+
+#: ../../build/docs/basic/sql_function.rst:36
+#: ../../build/docs/basic/sql_function.rst:341
+msgid "``vehicle_net``"
+msgstr ""
+
+#: ../../build/docs/basic/sql_function.rst:37
+#: ../../build/docs/basic/sql_function.rst:342
+msgid "``taxi_net``"
+msgstr ""
+
+#: ../../build/docs/basic/sql_function.rst:39
+msgid "The function needs to return the following routing information:"
+msgstr ""
+
+#: ../../build/docs/basic/sql_function.rst:41
 msgid "``seq`` - A unique identifier of the rows"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:34
+#: ../../build/docs/basic/sql_function.rst:42
 msgid "``id`` - The segment's identifier"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:35
+#: ../../build/docs/basic/sql_function.rst:43
 msgid "``name`` - The segment's name"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:36
+#: ../../build/docs/basic/sql_function.rst:44
 msgid "``length`` - The segment's length"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:37
+#: ../../build/docs/basic/sql_function.rst:45
 msgid "``seconds`` - Number of seconds to traverse the segment"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:38
+#: ../../build/docs/basic/sql_function.rst:46
 msgid "``azimuth`` - The azimuth of the segment"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:39
+#: ../../build/docs/basic/sql_function.rst:47
 msgid "``route_geom`` - The routing geometry"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:40
+#: ../../build/docs/basic/sql_function.rst:48
 msgid "``route_readable`` - The geometry in human readable form."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:43
+#: ../../build/docs/basic/sql_function.rst:51
 msgid "Design of the function"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:44
+#: ../../build/docs/basic/sql_function.rst:52
 msgid "The function to be created ``wrk_dijkstra`` with the following input parameters and output columns:"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:48
+#: ../../build/docs/basic/sql_function.rst:56
 msgid "Input parameters"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:50
+#: ../../build/docs/basic/sql_function.rst:58
 msgid "Parameter"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:50
-#: ../../build/docs/basic/sql_function.rst:60
+#: ../../build/docs/basic/sql_function.rst:58
+#: ../../build/docs/basic/sql_function.rst:68
 msgid "Type"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:50
-#: ../../build/docs/basic/sql_function.rst:60
+#: ../../build/docs/basic/sql_function.rst:58
+#: ../../build/docs/basic/sql_function.rst:68
 msgid "Description"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:52
+#: ../../build/docs/basic/sql_function.rst:60
 msgid "``edges_subset``"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:52
+#: ../../build/docs/basic/sql_function.rst:60
 msgid "REGCLASS"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:52
+#: ../../build/docs/basic/sql_function.rst:60
 msgid "The table/view that is going to be used for processing"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:53
-msgid "``source_osm``"
+#: ../../build/docs/basic/sql_function.rst:61
+msgid "``source``"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:53
-#: ../../build/docs/basic/sql_function.rst:54
-#: ../../build/docs/basic/sql_function.rst:63
+#: ../../build/docs/basic/sql_function.rst:61
+#: ../../build/docs/basic/sql_function.rst:62
+#: ../../build/docs/basic/sql_function.rst:71
 msgid "BIGINT"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:53
-msgid "The OSM identifier of the `departure` location."
+#: ../../build/docs/basic/sql_function.rst:61
+msgid "The  identifier of the `departure` location."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:54
-msgid "``target_osm``"
+#: ../../build/docs/basic/sql_function.rst:62
+msgid "``target``"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:54
-msgid "The OSM identifier of the `destination` location."
+#: ../../build/docs/basic/sql_function.rst:62
+msgid "The  identifier of the `destination` location."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:58
+#: ../../build/docs/basic/sql_function.rst:66
 msgid "output columns"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:60
+#: ../../build/docs/basic/sql_function.rst:68
 msgid "Name"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:62
-#: ../../build/docs/basic/sql_function.rst:94
+#: ../../build/docs/basic/sql_function.rst:70
+#: ../../build/docs/basic/sql_function.rst:99
 msgid "``seq``"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:62
+#: ../../build/docs/basic/sql_function.rst:70
 msgid "INTEGER"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:62
+#: ../../build/docs/basic/sql_function.rst:70
 msgid "A unique number for each result row."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:63
-#: ../../build/docs/basic/sql_function.rst:95
+#: ../../build/docs/basic/sql_function.rst:71
+#: ../../build/docs/basic/sql_function.rst:100
 msgid "``id``"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:63
+#: ../../build/docs/basic/sql_function.rst:71
 msgid "The edge identifier."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:64
-#: ../../build/docs/basic/sql_function.rst:96
+#: ../../build/docs/basic/sql_function.rst:72
+#: ../../build/docs/basic/sql_function.rst:101
 msgid "``name``"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:64
-#: ../../build/docs/basic/sql_function.rst:68
+#: ../../build/docs/basic/sql_function.rst:72
+#: ../../build/docs/basic/sql_function.rst:76
 msgid "TEXT"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:64
+#: ../../build/docs/basic/sql_function.rst:72
 msgid "The name of the segment."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:65
-#: ../../build/docs/basic/sql_function.rst:97
+#: ../../build/docs/basic/sql_function.rst:73
+#: ../../build/docs/basic/sql_function.rst:102
 msgid "``seconds``"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:65
-#: ../../build/docs/basic/sql_function.rst:66
-#: ../../build/docs/basic/sql_function.rst:67
+#: ../../build/docs/basic/sql_function.rst:73
+#: ../../build/docs/basic/sql_function.rst:74
+#: ../../build/docs/basic/sql_function.rst:75
 msgid "FLOAT"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:65
+#: ../../build/docs/basic/sql_function.rst:73
 msgid "The number of seconds it takes to traverse the segment."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:66
-msgid "``azimuth``"
+#: ../../build/docs/basic/sql_function.rst:74
+#: ../../build/docs/basic/sql_function.rst:103
+msgid "``length``"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:66
-msgid "The azimuth of the segment."
+#: ../../build/docs/basic/sql_function.rst:74
+msgid "The leng in meters of the segment."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:67
-#: ../../build/docs/basic/sql_function.rst:98
-msgid "``length``"
+#: ../../build/docs/basic/sql_function.rst:75
+msgid "``azimuth``"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:67
-msgid "The leng in meters of the segment."
+#: ../../build/docs/basic/sql_function.rst:75
+msgid "The azimuth of the segment."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:68
+#: ../../build/docs/basic/sql_function.rst:76
 msgid "``route_readable``"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:68
+#: ../../build/docs/basic/sql_function.rst:76
 msgid "The geometry in human readable form."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:69
+#: ../../build/docs/basic/sql_function.rst:77
 msgid "``route_geom``"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:69
+#: ../../build/docs/basic/sql_function.rst:77
 msgid "geometry"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:69
+#: ../../build/docs/basic/sql_function.rst:77
 msgid "The geometry of the segment in the correct direction."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:73
-msgid "For the following exercises only ``vehicle_net`` will be used, but you can test the queries with the other views."
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:77
+#: ../../build/docs/basic/sql_function.rst:82
 msgid "Additional information handling"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:79
+#: ../../build/docs/basic/sql_function.rst:84
 msgid "When the application needs additional information, like the name of the street, ``JOIN`` the results with other tables."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:83
+#: ../../build/docs/basic/sql_function.rst:88
 msgid "Exercise 1: Get additional information"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:85
+#: ../../build/docs/basic/sql_function.rst:90
 msgid "Route showing names"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:90
-#: ../../build/docs/basic/sql_function.rst:137
-#: ../../build/docs/basic/sql_function.rst:188
-#: ../../build/docs/basic/sql_function.rst:244
-#: ../../build/docs/basic/sql_function.rst:308
-#: ../../build/docs/basic/sql_function.rst:352
-#: ../../build/docs/basic/sql_function.rst:403
+#: ../../build/docs/basic/sql_function.rst:95
+#: ../../build/docs/basic/sql_function.rst:147
+#: ../../build/docs/basic/sql_function.rst:186
+#: ../../build/docs/basic/sql_function.rst:239
+#: ../../build/docs/basic/sql_function.rst:303
 msgid "Problem"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:91
-msgid "From |ch7_place_1| to |ch7_place_2|, using OSM identifiers."
+#: ../../build/docs/basic/sql_function.rst:96
+#: ../../build/docs/basic/sql_function.rst:142
+#: ../../build/docs/basic/sql_function.rst:181
+#: ../../build/docs/basic/sql_function.rst:215
+msgid "From |ch7_place_1| to |ch7_place_2|"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:92
+#: ../../build/docs/basic/sql_function.rst:97
 msgid "Get the following information:"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:101
-#: ../../build/docs/basic/sql_function.rst:150
-#: ../../build/docs/basic/sql_function.rst:196
-#: ../../build/docs/basic/sql_function.rst:254
-#: ../../build/docs/basic/sql_function.rst:316
-#: ../../build/docs/basic/sql_function.rst:366
-#: ../../build/docs/basic/sql_function.rst:408
+#: ../../build/docs/basic/sql_function.rst:106
+#: ../../build/docs/basic/sql_function.rst:155
+#: ../../build/docs/basic/sql_function.rst:194
+#: ../../build/docs/basic/sql_function.rst:249
+#: ../../build/docs/basic/sql_function.rst:309
 msgid "Solution"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:102
-msgid "The columns asked (line **2**)."
+#: ../../build/docs/basic/sql_function.rst:107
+msgid "The function returns the columns asked. (line **4**)"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:103
-msgid "Rename ``pgr_dijkstra`` results to application requirements names. (line **4**)."
+#: ../../build/docs/basic/sql_function.rst:108
+msgid "Rename ``pgr_dijkstra`` results to application requirements names. (line **12**)."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:104
-msgid "``LEFT JOIN`` the results with ``vehicle_net`` to get the additional information. (line **9**)"
+#: ../../build/docs/basic/sql_function.rst:110
+msgid "``LEFT JOIN`` the results with ``vehicle_net`` to get the additional information. (line **17**)"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:106
+#: ../../build/docs/basic/sql_function.rst:113
 msgid "``LEFT`` to include the row with ``id = -1`` because it does not exist on ``vehicle_net``"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:122
+#: ../../build/docs/basic/sql_function.rst:116
+#: ../../build/docs/basic/sql_function.rst:160
+#: ../../build/docs/basic/sql_function.rst:197
+#: ../../build/docs/basic/sql_function.rst:314
+msgid "Test from |ch7_id_1| to |ch7_id_2| on ``vehicle_net``. (Last line)"
+msgstr ""
+
+#: ../../build/docs/basic/sql_function.rst:132
 msgid "Geometry handling"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:124
+#: ../../build/docs/basic/sql_function.rst:134
 msgid "From pgRouting point of view, the geometry is part of the additional information, needed on the results for an application. Therefore ``JOIN`` the results with other tables that contain the geometry and for further processing with PostGIS functions."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:130
+#: ../../build/docs/basic/sql_function.rst:140
 msgid "Exercise 2: Route geometry (human readable)"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:132
-#: ../../build/docs/basic/sql_function.rst:218
-msgid "From |ch7_place_1| to |ch7_place_2|"
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:138
-#: ../../build/docs/basic/sql_function.rst:189
-#: ../../build/docs/basic/sql_function.rst:245
+#: ../../build/docs/basic/sql_function.rst:148
+#: ../../build/docs/basic/sql_function.rst:187
+#: ../../build/docs/basic/sql_function.rst:240
 msgid "Route from the |ch7_place_1| to |ch7_place_2|"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:140
-#: ../../build/docs/basic/sql_function.rst:191
+#: ../../build/docs/basic/sql_function.rst:150
+#: ../../build/docs/basic/sql_function.rst:189
 msgid "Additionally to the previous exercise, get the"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:142
-msgid "geometry ``geom`` in human readable form named as ``route_readable``"
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:146
-msgid "``WITH`` provides a way to write auxiliary statements in larger queries. It can be thought of as defining temporary tables that exist just for one query."
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:151
-msgid "The routing query named ``results`` in a WITH clause. (lines **2** to **5**)"
-msgstr ""
-
 #: ../../build/docs/basic/sql_function.rst:152
-msgid "The results from the previous exercise. (lines **8** and **9**)"
+msgid "geometry ``geom`` in human readable form named as ``route_readable``"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:154
-msgid "For result reading purposes, the result columns from the previous are in a comment. Uncomment to see the complete results for the problem."
+#: ../../build/docs/basic/sql_function.rst:156
+msgid "The function returns ``route_readable``. (line **6**)"
 msgstr ""
 
 #: ../../build/docs/basic/sql_function.rst:157
-msgid "The ``geom`` processed with ``ST_AsText`` to get the human readable form. (line **12**)"
+msgid "The routing query named ``results`` in a WITH clause. (line **11**)"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:160
-msgid "Renaming the result to ``route_readable``"
+#: ../../build/docs/basic/sql_function.rst:158
+msgid "The ``geom`` processed with ``ST_AsText`` to get the human readable form. (line **19**)."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:162
-msgid "The ``LEFT JOIN`` with ``vehicle_net``. (line **14**)"
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:181
+#: ../../build/docs/basic/sql_function.rst:179
 msgid "Exercise 3: Route geometry (binary format)"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:183
-msgid "From |ch7_place_1| to |ch7_place_2| showing arrows."
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:193
-#: ../../build/docs/basic/sql_function.rst:250
+#: ../../build/docs/basic/sql_function.rst:191
+#: ../../build/docs/basic/sql_function.rst:245
 msgid "``geom`` in binary format with the name ``route_geom``"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:197
-msgid "The query from the previous exercise is used"
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:198
-msgid "The ``SELECT`` clause also contains:"
+#: ../../build/docs/basic/sql_function.rst:195
+msgid "The function returns ``route_geom``. (line **7**)"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:200
-msgid "The ``geom`` including the renaming (line **9**)"
+#: ../../build/docs/basic/sql_function.rst:196
+msgid "The geometry ``geom`` of the segments (line **21**)"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:216
+#: ../../build/docs/basic/sql_function.rst:213
 msgid "Exercise 4: Route geometry directionality"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:222
+#: ../../build/docs/basic/sql_function.rst:219
 msgid "Visually, with the route displayed with arrows, it can be found that there are arrows that do not match the directionality of the route."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:225
+#: ../../build/docs/basic/sql_function.rst:222
 msgid "To have correct directionality, the ending point of a geometry must match the starting point of the next geometry"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:228
+#: ../../build/docs/basic/sql_function.rst:225
 msgid "Inspecting the detail of the results of `Exercise 2: Route geometry (human readable)`_"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:231
-msgid "Rows **59** to **61** do not match that criteria"
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:247
+#: ../../build/docs/basic/sql_function.rst:242
 msgid "Fix the directionality of the geometries of the previous exercise"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:249
+#: ../../build/docs/basic/sql_function.rst:244
 msgid "``geom`` in human readable form named as ``route_readable``"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:251
+#: ../../build/docs/basic/sql_function.rst:246
 msgid "Both columns must have the geometry fixed for directionality."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:255
+#: ../../build/docs/basic/sql_function.rst:250
 msgid "To get the correct direction some geometries need to be reversed:"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:257
-msgid "Reversing a geometry will depend on the ``node`` column of the query to Dijkstra (line **2**)"
+#: ../../build/docs/basic/sql_function.rst:252
+msgid "Reversing a geometry will depend on the ``node`` column of the query to Dijkstra."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:260
+#: ../../build/docs/basic/sql_function.rst:255
 msgid "A conditional ``CASE`` statement that returns the geometry in human readable form:"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:263
-msgid "Of the geometry when ``node`` is the ``source`` column. (line **11**)"
+#: ../../build/docs/basic/sql_function.rst:258
+msgid "Of the geometry when ``node`` is the ``source`` column."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:264
-msgid "Of the reversed geometry when ``node`` is not the ``source`` column. (line **12**)"
+#: ../../build/docs/basic/sql_function.rst:259
+msgid "Of the reversed geometry when ``node`` is not the ``source`` column."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:266
+#: ../../build/docs/basic/sql_function.rst:261
 msgid "A conditional ``CASE`` statement that returns:"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:268
-msgid "The geometry when ``node`` is the ``source`` column. (line **17**)"
+#: ../../build/docs/basic/sql_function.rst:263
+msgid "The geometry when ``node`` is the ``source`` column."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:269
-msgid "The reversed geometry when ``node`` is not the ``source`` column. (line **16**)"
+#: ../../build/docs/basic/sql_function.rst:264
+msgid "The reversed geometry when ``node`` is not the ``source`` column."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:282
-msgid "Inspecting some the problematic rows, the directionality has been fixed."
+#: ../../build/docs/basic/sql_function.rst:277
+msgid "Inspecting the problematic rows, the directionality has been fixed."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:295
+#: ../../build/docs/basic/sql_function.rst:290
 msgid "Exercise 5: Using the geometry"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:297
+#: ../../build/docs/basic/sql_function.rst:292
 msgid "From |ch7_place_1| to the |ch7_place_2| show azimuth"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:302
+#: ../../build/docs/basic/sql_function.rst:297
 msgid "There are many geometry functions in PostGIS, the workshop already covered some of them like ``ST_AsText``, ``ST_Reverse``, ``ST_EndPoint``, etc. This exercise will make use an additional function ``ST_Azimuth``."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:309
+#: ../../build/docs/basic/sql_function.rst:304
 msgid "Modify the query from the previous exercise"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:311
-msgid "Additionally obtain the azimuth of the correct geometry."
+#: ../../build/docs/basic/sql_function.rst:306
+msgid "Additionally obtain the azimuth in degrees of the corrected geometry."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:312
-msgid "Because ``vehicle_net`` and the other 2 views are sub graphs of ``ways``, do the ``JOIN`` with ``ways``."
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:317
-msgid "Move the query that gets the additional information into the ``WITH`` statement."
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:319
-msgid "Name it ``additional``. (line **6**)"
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:321
-msgid "The ``ways`` table geometry name is ``the_geom``."
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:322
-msgid "Final ``SELECT`` statements gets:"
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:324
-msgid "Calculates the azimuth of ``route_geom``. (line **27**)"
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:337
-msgid "Creating the Function"
+#: ../../build/docs/basic/sql_function.rst:310
+msgid "The function returns ``aximuth``. (line **8**)"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:339
-msgid "The following function simplifies (and sets default values) when it calls the shortest path Dijkstra function."
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:343
-msgid "pgRouting uses heavely function overloading:"
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:345
-msgid "Avoid creating functions with a name of a pgRouting routing function"
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:346
-msgid "Avoid the name of a function to start with `pgr_`, `_pgr` or `ST_`"
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:349
-msgid "Exercise 6: Function for an application"
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:353
-msgid "Putting all together in a SQL function"
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:355
-msgid "function name ``wrk_dijkstra``"
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:356
-msgid "Should work for any given view."
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:358
-msgid "Allow a view as a parameter"
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:359
-msgid "A table can be used if the columns have the correct names."
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:361
-msgid "``source`` and ``target`` are in terms of ``osm_id``."
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:362
-msgid "The result should meet the requirements indicated at the beginning of the chapter"
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:367
-msgid "The signature of the function:"
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:369
-msgid "The input parameters are from line **4** to **6**."
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:370
-msgid "The output columns are from line **7** to **14** (not highlighted)."
+#: ../../build/docs/basic/sql_function.rst:311
+msgid "The query from previous exercise is wrapped under additional subquery. (line **18**)"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:371
-msgid "The function returns a set. (line **16**)"
+#: ../../build/docs/basic/sql_function.rst:313
+msgid "The ``azimuth`` is processed in degrees. (line **35**)."
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:379
-msgid "The body of the function:"
+#: ../../build/docs/basic/sql_function.rst:329
+msgid "Exercise 6: Using the function"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:381
-msgid "Appending the view name on line **7** in the ``SELECT`` query to ``pgr_dijkstra``."
+#: ../../build/docs/basic/sql_function.rst:331
+msgid "Try the function with a combination of the interesting places:"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:382
-msgid "Using the data to get the route from ``source`` to ``target``. (line **8**)"
+#: ../../build/docs/basic/sql_function.rst:333
+msgid "|id_1| |place_1|"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:383
-msgid "The ``JOIN`` with ``ways`` is necessary, as the views are subset of ``ways`` (line **25**)"
+#: ../../build/docs/basic/sql_function.rst:334
+msgid "|id_2| |place_2|"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:400
-msgid "Exercise 7: Using the function"
+#: ../../build/docs/basic/sql_function.rst:335
+msgid "|id_3| |place_3|"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:404
-msgid "Test the function with the three views"
+#: ../../build/docs/basic/sql_function.rst:336
+msgid "|id_4| |place_4|"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:405
-msgid "From the |ch7_place_1| to the |ch7_place_2| using the OSM identifier"
+#: ../../build/docs/basic/sql_function.rst:337
+msgid "|id_5| |place_5|"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:409
-msgid "Use the function on the ``SELECT`` statement"
+#: ../../build/docs/basic/sql_function.rst:339
+msgid "Using different networks:"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:410
-msgid "The first parameter changes based on the view to be tested"
+#: ../../build/docs/basic/sql_function.rst:343
+msgid "``walk_net``"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:412
+#: ../../build/docs/basic/sql_function.rst:345
 msgid "Names of the streets in the route"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:423
+#: ../../build/docs/basic/sql_function.rst:356
 msgid "Total seconds spent in each street"
 msgstr ""
 
-#: ../../build/docs/basic/sql_function.rst:434
-msgid "Get all the information of the route"
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:445
-msgid "Try the function with a combination of the interesting places:"
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:447
-msgid "|osmid_1| |place_1|"
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:448
-msgid "|osmid_2| |place_2|"
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:449
-msgid "|osmid_3| |place_3|"
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:450
-msgid "|osmid_4| |place_4|"
-msgstr ""
-
-#: ../../build/docs/basic/sql_function.rst:451
-msgid "|osmid_5| |place_5|"
+#: ../../build/docs/basic/sql_function.rst:367
+msgid "Why it does not fully work with ``walk_net``?"
 msgstr ""