Horton

Prevent creation of duplicate not-null constraints for domains

Álvaro Herrera <alvherre@kurilemu.de>

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Commit: 8af310b331940ff5efd19402a3f8ee5521eb821a
Author: Álvaro Herrera <alvherre@kurilemu.de>
Date: 2025-07-03T09:46:12Z
Releases: 18.0 
Prevent creation of duplicate not-null constraints for domains

This was previously harmless, but now that we create pg_constraint rows
for those, duplicates are not welcome anymore.

Backpatch to 18.

Co-authored-by: jian he <jian.universality@gmail.com>
Co-authored-by: Álvaro Herrera <alvherre@kurilemu.de>
Discussion: https://postgr.es/m/CACJufxFSC0mcQ82bSk58sO-WJY4P-o4N6RD2M0D=DD_u_6EzdQ@mail.gmail.com

Files

PathChange+/−
src/backend/commands/typecmds.c modified +11 −3
src/test/regress/expected/domain.out modified +5 −0
src/test/regress/sql/domain.sql modified +3 −0

Discussion