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* Suppress unnecessary RelabelType nodes in more cases.Tom Lane2020-02-261-0/+12
* Reduce "X = X" to "X IS NOT NULL", if it's easy to do so.Tom Lane2017-10-081-0/+18
* Optimize joins when the inner relation can be proven unique.Tom Lane2017-04-071-12/+10
* Improve RLS planning by marking individual quals with security levels.Tom Lane2017-01-181-0/+42
* Be more careful about printing constants in ruleutils.c.Tom Lane2015-03-301-22/+22
* Show sort ordering options in EXPLAIN output.Tom Lane2015-01-161-2/+2
* Fix some more problems with nested append relations.Tom Lane2014-10-011-0/+383