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Doc: clarify NULLS NOT DISTINCT use in unique indexes
authorDavid Rowley <drowley@postgresql.org>
Thu, 20 Apr 2023 11:52:36 +0000 (23:52 +1200)
committerDavid Rowley <drowley@postgresql.org>
Thu, 20 Apr 2023 11:52:36 +0000 (23:52 +1200)
commit94d73f9abdf13e6dd93d96d0e4b197479c8756de
tree2a0a70ec6e471daf3c6d57ccd145f87588b246f1tree
parent62b22caa5531da8f6498f09f15ac0f09c95b1459commit | diff
Doc: clarify NULLS NOT DISTINCT use in unique indexes

indexes-unique.html mentioned nothing about the availability of NULLS NOT
DISTINCT to modify the NULLs-are-not-equal behavior of unique indexes.
Add this to the synopsis and clarify what it does regarding NULLs.

Author: David Gilman, David Rowley
Reviewed-by: Corey Huinker
Discussion: https://postgr.es/m/CALBH9DDr3NLqzWop1z5uZE-M5G_GYUuAeHFHQeyzFbNd8W0d=Q@mail.gmail.com
Backpatch-through: 15, where NULLS NOT DISTINCT was added
doc/src/sgml/indices.sgml diff | blob | blame | history
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