docs: mention that expression indexes need analyze
authorBruce Momjian <bruce@momjian.us>
Thu, 12 Nov 2020 20:00:44 +0000 (15:00 -0500)
committerBruce Momjian <bruce@momjian.us>
Thu, 12 Nov 2020 20:00:44 +0000 (15:00 -0500)
commit337020798674bcdfefe93e2277d98458da7266cd
tree760831bcb5590ccb0caaa1b4496e72c29d419781
parent66a8f090485e3e897a4804121fdbe856cba72d70
docs: mention that expression indexes need analyze

Expression indexes can't benefit from pre-computed statistics on
columns.

Reported-by: Nikolay Samokhvalov
Discussion: https://postgr.es/m/CANNMO++5rw9RDA=p40iMVbMNPaW6O=S0AFzTU=KpYHRpCd1voA@mail.gmail.com

Author: Nikolay Samokhvalov, modified

Backpatch-through: 9.5
doc/src/sgml/ref/create_index.sgml