citus

Author	SHA1	Message	Date
Hadi Moshayedi	86b12bc2d0	Always prefix operators with their namespace. (#2147 ) Previously we checked if an operator is in pg_catalog, and if it wasn't we prefixed it with namespace in worker queries. This can have a huge impact on performance of physical planner when using custom data types. This happened regardless of current search_path config, because Citus overrides the search path in get_query_def_extended(). When we do so, the check for existence of the operator in current search path in generate_operator_name() fails for any operators outside pg_catalog. This means that nothing gets cached, and in the following calls we will again recheck the system tables for existence of the operators, which took an additional 40-50ms for some of the usecases we were seeing. In this change we skip the pg_catalog check, and always prefix the operator with its namespace.	2018-05-05 13:27:26 -04:00
velioglu	195ac948d2	Recursively plan subqueries in WHERE clause when FROM recurs	2018-02-13 19:52:12 +03:00
Onder Kalaci	eb929e9001	Add some more basic regression tests, mostly for documentation purposes	2017-12-25 15:03:45 +02:00
mehmet furkan şahin	57bc86e23d	new debug output for subplans	2017-12-25 09:50:51 +03:00
Onder Kalaci	e2a5124830	Add regression tests for recursive subquery planning	2017-12-21 08:37:40 +02:00