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Don't permit transition tables with TRUNCATE triggers.

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Prior to this prohibition, such a trigger caused a crash.

Thomas Munro, per a report from Neha Sharma.  I added a
regression test.

Discussion: http://postgr.es/m/CAEepm=0VR5W-N38eTkO_FqJbGqQ_ykbBRmzmvHyxDhy1p=0Csw@mail.gmail.com
This commit is contained in:
Robert Haas
2017-05-09 23:22:39 -04:00
parent 304007d9f1
commit 29fd3d9da0
3 changed files with 21 additions and 0 deletions
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5
src/backend/commands/trigger.c
View File

@ -366,6 +366,11 @@ CreateTrigger(CreateTrigStmt *stmt, const char *queryString,
(errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
errmsg("transition table name can only be specified for an AFTER trigger")));
if (TRIGGER_FOR_TRUNCATE(tgtype))
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("TRUNCATE triggers with transition tables are not supported")));
if (tt->isNew)
{
if (!(TRIGGER_FOR_INSERT(tgtype) ||

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

@ -5943,6 +5943,14 @@ BEGIN
RETURN NULL;
END;
$$;
-- should fail, TRUNCATE is not compatible with transition tables
CREATE TRIGGER alter_table_under_transition_tables_upd_trigger
AFTER TRUNCATE OR UPDATE ON alter_table_under_transition_tables
REFERENCING OLD TABLE AS d NEW TABLE AS i
FOR EACH STATEMENT EXECUTE PROCEDURE
alter_table_under_transition_tables_upd_func();
ERROR: TRUNCATE triggers with transition tables are not supported
-- should work
CREATE TRIGGER alter_table_under_transition_tables_upd_trigger
AFTER UPDATE ON alter_table_under_transition_tables
REFERENCING OLD TABLE AS d NEW TABLE AS i

8
src/test/regress/sql/plpgsql.sql
View File

@ -4736,6 +4736,14 @@ BEGIN
END;
$$;
-- should fail, TRUNCATE is not compatible with transition tables
CREATE TRIGGER alter_table_under_transition_tables_upd_trigger
AFTER TRUNCATE OR UPDATE ON alter_table_under_transition_tables
REFERENCING OLD TABLE AS d NEW TABLE AS i
FOR EACH STATEMENT EXECUTE PROCEDURE
alter_table_under_transition_tables_upd_func();
-- should work
CREATE TRIGGER alter_table_under_transition_tables_upd_trigger
AFTER UPDATE ON alter_table_under_transition_tables
REFERENCING OLD TABLE AS d NEW TABLE AS i