citus

Author	SHA1	Message	Date
Murat Tuncer	e86b4b397c	Refactor multi_planner to create router plan directly If router plan creation fails, it falls back to normal planner	2016-06-21 12:50:21 +03:00
eren	793cb2d004	ADD master_modify_multiple_shards UDF Fixes #10 This change creates a new UDF: master_modify_multiple_shards Parameters: modify_query: A simple DELETE or UPDATE query as a string. The UDF is similar to the existing master_apply_delete_command UDF. Basically, given the modify query, it prunes the shard list, re-constructs the query for each shard and sends the query to the placements. Depending on the value of citus.multi_shard_commit_protocol, the commit can be done in one-phase or two-phase manner. Limitations: * It cannot be called inside a transaction block * It only be called with simple operator expressions (like Single Shard Modify) Sample Usage: ``` SELECT master_modify_multiple_shards( 'DELETE FROM customer_delete_protocol WHERE c_custkey > 500 AND c_custkey < 500'); ```	2016-05-26 17:30:35 +03:00
Murat Tuncer	2bc96fabe5	Add dynamic executor selection - non-router plannable queries can be executed by router executor if they satisfy the criteria - router executor is removed from configuration, now task executor can not be set to router - removed some tests that error out for router executor	2016-04-21 09:15:33 +03:00
Murat Tuncer	68cbf8a482	Add router plannable check and router planning logic for single shard select queries	2016-04-21 09:15:33 +03:00