mirror of
https://github.com/postgres/postgres.git
synced 2025-04-21 12:05:57 +03:00
e8655a77f3
Most estimation functions apply estimate_expression_value to see if they can reduce an expression to a constant; the key difference is that it allows evaluation of stable as well as immutable functions in hopes of ending up with a simple Const node. scalararraysel didn't get the memo though, and neither did gincost_opexpr/gincost_scalararrayopexpr. Fix that, and remove a now-unnecessary estimate_expression_value step in the subsidiary function scalararraysel_containment. Per complaint from Alexey Klyukin. Back-patch to 9.3. The problem goes back further, but I'm hesitant to change estimation behavior in long-stable release branches.