mirror of
https://github.com/FirebirdSQL/firebird-qa.git
synced 2025-01-22 21:43:06 +01:00
43 lines
912 B
Python
43 lines
912 B
Python
#coding:utf-8
|
|
|
|
"""
|
|
ID: issue-1397
|
|
ISSUE: 1397
|
|
TITLE: IS NOT DISTINCT FROM NULL doesn't use index
|
|
DESCRIPTION:
|
|
JIRA: CORE-3722
|
|
FBTEST: bugs.core_3722
|
|
"""
|
|
|
|
import pytest
|
|
from firebird.qa import *
|
|
|
|
init_script = """create table t (a varchar(5));
|
|
create index t_a on t (a);
|
|
"""
|
|
|
|
db = db_factory(init=init_script)
|
|
|
|
test_script = """SET PLAN ON;
|
|
select * from t where a is null;
|
|
select * from t where a is not distinct from null;
|
|
select * from t where a is not distinct from null PLAN (T INDEX (T_A));
|
|
select * from t where a is not distinct from nullif('', '');
|
|
"""
|
|
|
|
act = isql_act('db', test_script)
|
|
|
|
expected_stdout = """
|
|
PLAN (T INDEX (T_A))
|
|
PLAN (T INDEX (T_A))
|
|
PLAN (T INDEX (T_A))
|
|
PLAN (T INDEX (T_A))
|
|
"""
|
|
|
|
@pytest.mark.version('>=3')
|
|
def test_1(act: Action):
|
|
act.expected_stdout = expected_stdout
|
|
act.execute()
|
|
assert act.clean_stdout == act.clean_expected_stdout
|
|
|