Thread: pgsql: Add ALTER TABLE ... ALTER CONSTRAINT ... SET [NO] INHERIT

pgsql: Add ALTER TABLE ... ALTER CONSTRAINT ... SET [NO] INHERIT

From
Álvaro Herrera
Date:
Add ALTER TABLE ... ALTER CONSTRAINT ... SET [NO] INHERIT

This allows to redefine an existing non-inheritable constraint to be
inheritable, which allows to straighten up situations with NO INHERIT
constraints so that thay can become normal constraints without having to
re-verify existing data.  For existing inheritance children this may
require creating additional constraints, if they don't exist already.

It also allows to do the opposite, if only for symmetry.

Author: Suraj Kharage <suraj.kharage@enterprisedb.com>
Reviewed-by: jian he <jian.universality@gmail.com>
Discussion: https://postgr.es/m/CAF1DzPVfOW6Kk=7SSh7LbneQDJWh=PbJrEC_Wkzc24tHOyQWGg@mail.gmail.com

Branch
------
master

Details
-------
https://git.postgresql.org/pg/commitdiff/f4e53e10b6ce0eedeb98caa4356facb47c7bb9cb

Modified Files
--------------
doc/src/sgml/ref/alter_table.sgml     |  23 +++++-
src/backend/commands/tablecmds.c      | 115 +++++++++++++++++++++++++----
src/backend/parser/gram.y             |  28 ++++++++
src/include/nodes/parsenodes.h        |   2 +
src/test/regress/expected/inherit.out | 131 +++++++++++++++++++++++++++++++++-
src/test/regress/sql/inherit.sql      |  79 +++++++++++++++++++-
6 files changed, 359 insertions(+), 19 deletions(-)