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Fix DROP ACCESS METHOD IF EXISTS.

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The IF EXISTS option was documented, and implemented in the grammar, but
it didn't actually work for lack of support in does_not_exist_skipping().
Per bug #14160.

Report and patch by Kouhei Sutou

Report: <20160527070433.19424.81712@wrigleys.postgresql.org>
This commit is contained in:
Tom Lane 2016-05-27 11:03:18 -04:00
parent 9dd4178cec
commit 83dbde94f7
3 changed files with 14 additions and 1 deletions
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6
src/backend/commands/dropcmds.c
View File

@ -262,6 +262,10 @@ does_not_exist_skipping(ObjectType objtype, List *objname, List *objargs)
switch (objtype)
{
case OBJECT_ACCESS_METHOD:
msg = gettext_noop("access method \"%s\" does not exist, skipping");
name = NameListToString(objname);
break;
case OBJECT_TYPE:
case OBJECT_DOMAIN:
{
@ -438,7 +442,7 @@ does_not_exist_skipping(ObjectType objtype, List *objname, List *objargs)
}
break;
default:
elog(ERROR, "unexpected object type (%d)", (int) objtype);
elog(ERROR, "unrecognized object type: %d", (int) objtype);
break;
}

5
src/test/regress/expected/drop_if_exists.out
View File

@ -227,6 +227,11 @@ DROP OPERATOR FAMILY test_operator_family USING no_such_am;
ERROR: access method "no_such_am" does not exist
DROP OPERATOR FAMILY IF EXISTS test_operator_family USING no_such_am;
ERROR: access method "no_such_am" does not exist
-- access method
DROP ACCESS METHOD no_such_am;
ERROR: access method "no_such_am" does not exist
DROP ACCESS METHOD IF EXISTS no_such_am;
NOTICE: access method "no_such_am" does not exist, skipping
-- drop the table
DROP TABLE IF EXISTS test_exists;
DROP TABLE test_exists;

4
src/test/regress/sql/drop_if_exists.sql
View File

@ -227,6 +227,10 @@ DROP OPERATOR FAMILY IF EXISTS test_operator_family USING btree;
DROP OPERATOR FAMILY test_operator_family USING no_such_am;
DROP OPERATOR FAMILY IF EXISTS test_operator_family USING no_such_am;
-- access method
DROP ACCESS METHOD no_such_am;
DROP ACCESS METHOD IF EXISTS no_such_am;
-- drop the table
DROP TABLE IF EXISTS test_exists;