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Doc: clarify NULLS NOT DISTINCT use in unique indexes
authorDavid Rowley <drowley@postgresql.org>
Thu, 20 Apr 2023 11:51:38 +0000 (23:51 +1200)
committerDavid Rowley <drowley@postgresql.org>
Thu, 20 Apr 2023 11:51:38 +0000 (23:51 +1200)
commit0d0aeb04c1277edb0733cbf5bf4243c47a439015
treebe1b87ed4c76972e58447963dfabbd8cf9ae71f1tree
parentc1cc4e688b60090f194017c6e15e330a725fba3ecommit | 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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