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[5.0.x] Fixed #34949 -- Clarified when UniqueConstraints with include/nulls_distinct are not created.

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Backport of 4fec1d2ce3 from main
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jordanbae 2024-01-09 23:04:31 +09:00 committed by Mariusz Felisiak
parent d56b2105b6
commit dd2d76803c
1 changed files with 4 additions and 2 deletions
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docs/ref/models/constraints.txt
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@ -229,7 +229,8 @@ For example::
will allow filtering on ``room`` and ``date``, also selecting ``full_name``, will allow filtering on ``room`` and ``date``, also selecting ``full_name``,
while fetching data only from the index. while fetching data only from the index.
``include`` is supported only on PostgreSQL. Unique constraints with non-key columns are ignored for databases besides
PostgreSQL.
Non-key columns have the same database restrictions as :attr:`Index.include`. Non-key columns have the same database restrictions as :attr:`Index.include`.
@ -272,7 +273,8 @@ For example::
creates a unique constraint that only allows one row to store a ``NULL`` value creates a unique constraint that only allows one row to store a ``NULL`` value
in the ``ordering`` column. in the ``ordering`` column.
``nulls_distinct`` is ignored for databases besides PostgreSQL 15+. Unique constraints with ``nulls_distinct`` are ignored for databases besides
PostgreSQL 15+.
``violation_error_code`` ``violation_error_code``
------------------------ ------------------------