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Support TRUNCATE triggers on foreign tables.

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Now some foreign data wrappers support TRUNCATE command.
So it's useful to support TRUNCATE triggers on foreign tables for
audit logging or for preventing undesired truncation.

Author: Yugo Nagata
Reviewed-by: Fujii Masao, Ian Lawrence Barwick
Discussion: https://postgr.es/m/20220630193848.5b02e0d6076b86617a915682@sraoss.co.jp
This commit is contained in:
Fujii Masao
2022-07-12 09:18:02 +09:00
parent 14168d3c62
commit 3b00a944a9
4 changed files with 11 additions and 14 deletions
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7
src/backend/commands/trigger.c
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@ -295,13 +295,6 @@ CreateTriggerFiringOn(CreateTrigStmt *stmt, const char *queryString,
RelationGetRelationName(rel)),
errdetail("Foreign tables cannot have INSTEAD OF triggers.")));
if (TRIGGER_FOR_TRUNCATE(stmt->events))
ereport(ERROR,
(errcode(ERRCODE_WRONG_OBJECT_TYPE),
errmsg("\"%s\" is a foreign table",
RelationGetRelationName(rel)),
errdetail("Foreign tables cannot have TRUNCATE triggers.")));
/*
* We disallow constraint triggers to protect the assumption that
* triggers on FKs can't be deferred. See notes with AfterTriggers