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
Branch
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REL_11_STABLE
Details
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https://git.postgresql.org/pg/commitdiff/b740b4a86784f40a4a473dc754525919e6abbc22
Modified Files
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doc/src/sgml/ref/create_index.sgml | 10 ++++++++++
1 file changed, 10 insertions(+)