mirror of
https://github.com/FirebirdSQL/firebird-qa.git
synced 2025-01-22 21:43:06 +01:00
58 lines
1.9 KiB
Python
58 lines
1.9 KiB
Python
#coding:utf-8
|
|
#
|
|
# id: functional.tabloid.pg_13918
|
|
# title: Some _TRIVIAL_ queries allow to specify HAVING without group by, and for such case one may to get record from EMPTY source rowset(!)
|
|
# decription:
|
|
# Original issue:
|
|
# http://www.postgresql.org/message-id/flat/CAKFQuwYSa5Dzvw8KdxhiUAY+fjbO4DRQ-sDqQXPVexvVoTkvQA@mail.gmail.com#CAKFQuwYSa5Dzvw8KdxhiUAY+fjbO4DRQ-sDqQXPVexvVoTkvQA@mail.gmail.com
|
|
#
|
|
# See also http://www.postgresql.org/docs/9.5/interactive/sql-select.html
|
|
# ===
|
|
# The presence of HAVING turns a query into a grouped query even if there is no GROUP BY clause <...>
|
|
# Such a query will emit a single row if the HAVING condition is true, zero rows if it is not true.
|
|
# ===
|
|
#
|
|
#
|
|
# tracker_id:
|
|
# min_versions: ['2.5.0']
|
|
# versions: 2.5
|
|
# qmid: None
|
|
|
|
import pytest
|
|
from firebird.qa import db_factory, isql_act, Action
|
|
|
|
# version: 2.5
|
|
# resources: None
|
|
|
|
substitutions_1 = []
|
|
|
|
init_script_1 = """"""
|
|
|
|
db_1 = db_factory(sql_dialect=3, init=init_script_1)
|
|
|
|
test_script_1 = """
|
|
set list on;
|
|
set count on;
|
|
-- This compiles OK and, moreover, outputs one record:
|
|
select 123456789 as "Yeah!" from rdb$database where 1=0 having 1=1;
|
|
select 987654321 as "Waw!!" from rdb$database where 1=0 having 1=2;
|
|
|
|
-- Following will NOT compile:
|
|
-- select i from (select 1 i from rdb$database) where i<0 having 1=0;
|
|
"""
|
|
|
|
act_1 = isql_act('db_1', test_script_1, substitutions=substitutions_1)
|
|
|
|
expected_stdout_1 = """
|
|
Yeah! 123456789
|
|
Records affected: 1
|
|
Records affected: 0
|
|
"""
|
|
|
|
@pytest.mark.version('>=2.5')
|
|
def test_1(act_1: Action):
|
|
act_1.expected_stdout = expected_stdout_1
|
|
act_1.execute()
|
|
assert act_1.clean_expected_stdout == act_1.clean_stdout
|
|
|