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Fix oversight in FindTriggerIncompatibleWithInheritance.

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This function is called from ATExecAttachPartition/ATExecAddInherit,
which prevent tables with row-level triggers with transition tables from
becoming partitions or inheritance children, to check if there is such a
trigger on the given table, but failed to check if a found trigger is
row-level, causing the caller functions to needlessly prevent a table
with only a statement-level trigger with transition tables from becoming
a partition or inheritance child.  Repair.

Oversight in commit 501ed02cf.

Author: Etsuro Fujita <etsuro.fujita@gmail.com>
Discussion: https://postgr.es/m/CAPmGK167mXzwzzmJ_0YZ3EZrbwiCxtM1vogH_8drqsE6PtxRYw%40mail.gmail.com
Backpatch-through: 13
This commit is contained in:
Etsuro Fujita
2025-08-08 17:35:04 +09:00
parent 095e83d096
commit afdb4cde14
3 changed files with 20 additions and 0 deletions
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2
src/backend/commands/trigger.c
View File

@@ -2045,6 +2045,8 @@ FindTriggerIncompatibleWithInheritance(TriggerDesc *trigdesc)
{
Trigger *trigger = &trigdesc->triggers[i];
if (!TRIGGER_FOR_ROW(trigger->tgtype))
continue;
if (trigger->tgoldtable != NULL || trigger->tgnewtable != NULL)
return trigger->tgname;
}

8
src/test/regress/expected/triggers.out
View File

@@ -2930,6 +2930,10 @@ NOTICE: trigger = child3_delete_trig, old table = (42,CCC)
-- copy into parent sees parent-format tuples
copy parent (a, b) from stdin;
NOTICE: trigger = parent_insert_trig, new table = (AAA,42), (BBB,42), (CCC,42)
-- check detach/reattach behavior; statement triggers with transition tables
-- should not prevent a table from becoming a partition again
alter table parent detach partition child1;
alter table parent attach partition child1 for values in ('AAA');
-- DML affecting parent sees tuples collected from children even if
-- there is no transition table trigger on the children
drop trigger child1_insert_trig on child1;
@@ -3127,6 +3131,10 @@ NOTICE: trigger = parent_insert_trig, new table = (AAA,42), (BBB,42), (CCC,42)
create index on parent(b);
copy parent (a, b) from stdin;
NOTICE: trigger = parent_insert_trig, new table = (DDD,42)
-- check disinherit/reinherit behavior; statement triggers with transition
-- tables should not prevent a table from becoming an inheritance child again
alter table child1 no inherit parent;
alter table child1 inherit parent;
-- DML affecting parent sees tuples collected from children even if
-- there is no transition table trigger on the children
drop trigger child1_insert_trig on child1;

10
src/test/regress/sql/triggers.sql
View File

@@ -2038,6 +2038,11 @@ BBB 42
CCC 42
\.
-- check detach/reattach behavior; statement triggers with transition tables
-- should not prevent a table from becoming a partition again
alter table parent detach partition child1;
alter table parent attach partition child1 for values in ('AAA');
-- DML affecting parent sees tuples collected from children even if
-- there is no transition table trigger on the children
drop trigger child1_insert_trig on child1;
@@ -2257,6 +2262,11 @@ copy parent (a, b) from stdin;
DDD 42
\.
-- check disinherit/reinherit behavior; statement triggers with transition
-- tables should not prevent a table from becoming an inheritance child again
alter table child1 no inherit parent;
alter table child1 inherit parent;
-- DML affecting parent sees tuples collected from children even if
-- there is no transition table trigger on the children
drop trigger child1_insert_trig on child1;