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SET NOT NULL: Call object-alter hook only after the catalog change

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... otherwise, the function invoked by the hook might consult the
catalog and not see that the new constraint exists.

This relies on set_attnotnull doing CommandCounterIncrement()
after successfully modifying the catalog.

Oversight in commit 14e87ffa5c.

Author: Artur Zakirov <zaartur@gmail.com>
Backpatch-through: 18
Discussion: https://postgr.es/m/CAKNkYnxUPCJk-3Xe0A3rmCC8B8V8kqVJbYMVN6ySGpjs_qd7dQ@mail.gmail.com
This commit is contained in:
Álvaro Herrera 2026-03-20 14:38:50 +01:00
parent 12444183e4
commit e7975f1c06
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1 changed files with 3 additions and 3 deletions
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6
src/backend/commands/tablecmds.c
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@ -8137,12 +8137,12 @@ ATExecSetNotNull(List **wqueue, Relation rel, char *conName, char *colName,
ccon = linitial(cooked);
ObjectAddressSet(address, ConstraintRelationId, ccon->conoid);
InvokeObjectPostAlterHook(RelationRelationId,
RelationGetRelid(rel), attnum);
/* Mark pg_attribute.attnotnull for the column and queue validation */
set_attnotnull(wqueue, rel, attnum, true, true);
InvokeObjectPostAlterHook(RelationRelationId,
RelationGetRelid(rel), attnum);
/*
* Recurse to propagate the constraint to children that don't have one.
*/