ncabatoff 1a4314c31b Since the two branches of the UNION produce disjoint sets, do a UNION ALL (#6546) ... This obviates the need for a sort/eliminate duplicates step, giving a performance boost in some key distributions with large datasets.		2019-05-10 13:26:01 -04:00
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postgresql_test.go	Added HA backend for postgres based on dynamodb model (#5731)	2019-05-10 12:48:42 -04:00
postgresql.go	Since the two branches of the UNION produce disjoint sets, do a UNION ALL (#6546)	2019-05-10 13:26:01 -04:00