[COMMITTERS] pgsql: Fix VALIDATE CONSTRAINT to consider NO INHERIT attribute.

Fix VALIDATE CONSTRAINT to consider NO INHERIT attribute.

Currently, trying to validate a NO INHERIT constraint on the parent will
search for the constraint in child tables (where it is not supposed to
exist), wrongly causing a "constraint does not exist" error.

Amit Langote, per a report from Hans Buschmann.

Discussion: http://postgr.es/m/20170421184012.24362.19@wrigleys.postgresql.org

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/6a4dda44e02bfd5148c13b00d8f81045a2e17f2c

Modified Files
--------------
src/backend/commands/tablecmds.c          |  5 +++--
src/test/regress/expected/alter_table.out | 20 ++++++++++++++++++++
src/test/regress/sql/alter_table.sql      | 15 +++++++++++++++
3 files changed, 38 insertions(+), 2 deletions(-)