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Create FKs properly when attaching table as partition

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Commit f56f8f8da6 added some code in CloneFkReferencing that's way too
lax about a Constraint node it manufactures, not initializing enough
struct members -- initially_valid in particular was forgotten.  This
causes some FKs in partitions added by ALTER TABLE ATTACH PARTITION to
be marked as not validated.  Set initially_valid true, which fixes the
bug.

While at it, make the struct initialization more complete.  Very similar
code was added in two other places by the same commit; make them all
follow the same pattern for consistency, though no bugs are apparent
there.

This bug has never been reported: I only happened to notice while
working on commit 614a406b4f.  The test case that was added there with
the improper result is repaired.

Backpatch to 12.

Discussion: https://postgr.es/m/20221005105523.bhuhkdx4olajboof@alvherre.pgsql
This commit is contained in:
Alvaro Herrera
2022-11-03 20:40:21 +01:00
parent 2489c38cdc
commit 18865f4df9
2 changed files with 37 additions and 10 deletions
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43
src/backend/commands/tablecmds.c
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@@ -9858,14 +9858,21 @@ CloneFkReferenced(Relation parentRel, Relation partitionRel)
mapped_confkey[i] = attmap->attnums[confkey[i] - 1];
fkconstraint = makeNode(Constraint);
/* for now this is all we need */
fkconstraint->contype = CONSTRAINT_FOREIGN;
fkconstraint->conname = NameStr(constrForm->conname);
fkconstraint->fk_upd_action = constrForm->confupdtype;
fkconstraint->fk_del_action = constrForm->confdeltype;
fkconstraint->deferrable = constrForm->condeferrable;
fkconstraint->initdeferred = constrForm->condeferred;
fkconstraint->initially_valid = true;
fkconstraint->location = -1;
fkconstraint->pktable = NULL;
/* ->fk_attrs determined below */
fkconstraint->pk_attrs = NIL;
fkconstraint->fk_matchtype = constrForm->confmatchtype;
fkconstraint->fk_upd_action = constrForm->confupdtype;
fkconstraint->fk_del_action = constrForm->confdeltype;
fkconstraint->old_conpfeqop = NIL;
fkconstraint->old_pktable_oid = InvalidOid;
fkconstraint->skip_validation = false;
fkconstraint->initially_valid = true;
/* set up colnames that are used to generate the constraint name */
for (int i = 0; i < numfks; i++)
@@ -10037,11 +10044,21 @@ CloneFkReferencing(List **wqueue, Relation parentRel, Relation partRel)
/* No dice. Set up to create our own constraint */
fkconstraint = makeNode(Constraint);
fkconstraint->fk_upd_action = constrForm->confupdtype;
fkconstraint->fk_del_action = constrForm->confdeltype;
fkconstraint->contype = CONSTRAINT_FOREIGN;
/* ->conname determined below */
fkconstraint->deferrable = constrForm->condeferrable;
fkconstraint->initdeferred = constrForm->condeferred;
fkconstraint->location = -1;
fkconstraint->pktable = NULL;
/* ->fk_attrs determined below */
fkconstraint->pk_attrs = NIL;
fkconstraint->fk_matchtype = constrForm->confmatchtype;
fkconstraint->fk_upd_action = constrForm->confupdtype;
fkconstraint->fk_del_action = constrForm->confdeltype;
fkconstraint->old_conpfeqop = NIL;
fkconstraint->old_pktable_oid = InvalidOid;
fkconstraint->skip_validation = false;
fkconstraint->initially_valid = true;
for (int i = 0; i < numfks; i++)
{
Form_pg_attribute att;
@@ -18019,11 +18036,21 @@ DetachPartitionFinalize(Relation rel, Relation partRel, bool concurrent,
* still do), but now we need separate ones of our own.
*/
fkconstraint = makeNode(Constraint);
fkconstraint->contype = CONSTRAINT_FOREIGN;
fkconstraint->conname = pstrdup(NameStr(conform->conname));
fkconstraint->fk_upd_action = conform->confupdtype;
fkconstraint->fk_del_action = conform->confdeltype;
fkconstraint->deferrable = conform->condeferrable;
fkconstraint->initdeferred = conform->condeferred;
fkconstraint->location = -1;
fkconstraint->pktable = NULL;
fkconstraint->fk_attrs = NIL;
fkconstraint->pk_attrs = NIL;
fkconstraint->fk_matchtype = conform->confmatchtype;
fkconstraint->fk_upd_action = conform->confupdtype;
fkconstraint->fk_del_action = conform->confdeltype;
fkconstraint->old_conpfeqop = NIL;
fkconstraint->old_pktable_oid = InvalidOid;
fkconstraint->skip_validation = false;
fkconstraint->initially_valid = true;
createForeignKeyActionTriggers(partRel, conform->confrelid,
fkconstraint, fk->conoid,