cartodb-postgresql/scripts-available/CDB_QueryStatements.sql
2019-05-31 15:37:15 +02:00

15 lines
529 B
PL/PgSQL

-- Return an array of statements found in the given query text
--
-- Regexp curtesy of Hubert Lubaczewski (depesz)
-- Implemented in plpython for performance reasons
--
CREATE OR REPLACE FUNCTION @extschema@.CDB_QueryStatements(query text)
RETURNS SETOF TEXT AS $$
import re
pat = re.compile( r'''((?:[^'"$;]+|"[^"]*"|'[^']*'|(\$[^$]*\$).*?\2)+)''', re.DOTALL )
for match in pat.findall(query):
cleaned = match[0].strip()
if ( cleaned ):
yield cleaned
$$ language 'plpythonu' IMMUTABLE STRICT PARALLEL SAFE;