Hi all,
I'd like to run the following steps automatically and, if possible, in one step. But I don't know how.
Step 1:
CREATE TABLE table_1 AS
SELECT *
FROM vertices_tmp
JOIN
(SELECT * FROM driving_distance('
SELECT ogc_fid AS id,
source::int4 AS source,
target::int4 AS target,
traveltime::float8 AS cost
FROM strassenl_dachraum_erweitert_ohne_autobahn',
25080,
60,
false,
false)) AS route
ON
vertices_tmp.id = route.vertex_id
Step 1 has to run 500 times with different values for the 5 digit number (here 25080) and a changing table name (table_
+ascending number). The 5 digit number is received from another table (vertices_tmp).
Step 2:
Schritt 2:
CREATE TABLE catchment_union AS
SELECT id,the_geom,cost FROM table_1
UNION ALL
SELECT id,the_geom,cost FROM table_2
UNION ALL
SELECT id,the_geom,cost FROM table_3
...
...
In step 2 the tables received in step 1 are merged with UNION.
How can I do that automatically?
I am grateful for any help.
Cheers,
Lu
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