Src |
CREATE FUNCTION "URX_PUBLIC"."_raster_constraint_info_extent"(rastschema name, rasttable name, rastcolumn name)
RETURNS geometry AS
$BODY$
SELECT
trim(both '''' from split_part(trim(split_part(s.consrc, ' @ ', 2)), '::', 1))::geometry
FROM pg_class c, pg_namespace n, pg_attribute a, pg_constraint s
WHERE n.nspname = $1
AND c.relname = $2
AND a.attname = $3
AND a.attrelid = c.oid
AND s.connamespace = n.oid
AND s.conrelid = c.oid
AND a.attnum = ANY (s.conkey)
AND s.consrc LIKE '%st_envelope(% @ %';
$BODY$
LANGUAGE 'sql' STABLESTRICT ;
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