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Return NULL for the affected value and not for all the measurements

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Right now we're doing INNER JOINS when we JOIN the _procgeoms and
the data so we end up with NULL value instead of id, NULL value. We need
to have the id available to make the JOIN at the end of the query and
provide results like this:

id |                               data
----+------------------------------------------------------------------
  1 | [{"value" : 858469},{"value" : 73.9397964478},{"value" : 69092}]
  2 | [{"value" : 738774},{"value" : null},{"value" : 2235406}]
This commit is contained in:
Mario de Frutos
2017-06-29 10:37:07 +02:00
parent 415a4ccc05
commit d1f4e570ad
1 changed files with 4 additions and 7 deletions
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src/pg/sql/41_observatory_augmentation.sql
+4 -7
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@@ -760,16 +760,13 @@ BEGIN
|| ') val_' || colid, ', ')
|| '
FROM _procgeoms_' || Coalesce(geom_tablename || '_' || geom_geomref_colname, api_method) || ' _procgeoms ' ||
Coalesce(', ' || String_Agg(DISTINCT
Coalesce('observatory.' || numer_tablename,
'LATERAL (SELECT * FROM cdb_observatory.' || api_method || '(_procgeoms.geom' || Coalesce(', ' ||
Coalesce(String_Agg(DISTINCT
Coalesce('LEFT JOIN observatory.' || numer_tablename || ' ON _procgeoms.geomref = observatory.' || numer_tablename || '.' || numer_geomref_colname,
', LATERAL (SELECT * FROM cdb_observatory.' || api_method || '(_procgeoms.geom' || Coalesce(', ' ||
(SELECT STRING_AGG(REPLACE(val::text, '"', ''''), ', ')
FROM (SELECT JSON_Array_Elements(api_args) as val) as vals),
'') || ')) AS ' || api_method)
, ', '), '') ||
Coalesce(' WHERE ' || String_Agg(DISTINCT
'_procgeoms.geomref = ' || numer_tablename || '.' || numer_geomref_colname, ' AND '
), '') ||
, ' '), '') ||
CASE $3 WHEN True THEN E'\n GROUP BY _procgeoms.id ORDER BY _procgeoms.id '
ELSE E'\n GROUP BY _procgeoms.id, _procgeoms.geomref
ORDER BY _procgeoms.id, _procgeoms.geomref' END