mirror of
https://github.com/FirebirdSQL/firebird-qa.git
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87 lines
2.2 KiB
Python
87 lines
2.2 KiB
Python
#coding:utf-8
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#
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# id: bugs.core_5149
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# title: Regression: LEFT JOIN incorrectly pushes COALESCE into the inner stream causing wrong results
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# decription:
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# tracker_id: CORE-5149
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# min_versions: ['3.0']
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# versions: 3.0
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# qmid: None
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import pytest
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from firebird.qa import db_factory, isql_act, Action
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# version: 3.0
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# resources: None
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substitutions_1 = []
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init_script_1 = """"""
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db_1 = db_factory(sql_dialect=3, init=init_script_1)
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test_script_1 = """
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-- Confirmed: wrong result on WI-V3.0.0.32380; works fine on LI-V3.0.0.32381.
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recreate table t_stock (
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tnr varchar(16),
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amount integer
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);
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recreate table t_main (
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tnr varchar(16) primary key using index t_main_tnr,
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minb integer
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);
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alter table t_stock
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add constraint fk_t_stock_1
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foreign key (tnr) references t_main (tnr)
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on delete cascade on update cascade
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using index t_stock_tnr
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;
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commit;
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insert into t_main (tnr, minb) values ('aaa', 0);
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insert into t_main (tnr, minb) values ('bbb', 10);
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insert into t_main (tnr, minb) values ('ccc', 10);
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insert into t_main (tnr, minb) values ('ddd', 10);
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insert into t_stock (tnr, amount) values ('aaa', 100);
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insert into t_stock (tnr, amount) values ('bbb', 5);
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insert into t_stock (tnr, amount) values ('ccc', 15);
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commit;
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set list on;
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select
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a.tnr
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,a.minb
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,b.amount as b_amount
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,coalesce(b.amount,0) as coalesce_b_amt
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from t_main a
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left join t_stock b on a.tnr = b.tnr
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where a.minb > coalesce(b.amount,0)
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order by a.tnr
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;
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"""
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act_1 = isql_act('db_1', test_script_1, substitutions=substitutions_1)
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expected_stdout_1 = """
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TNR bbb
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MINB 10
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B_AMOUNT 5
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COALESCE_B_AMT 5
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TNR ddd
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MINB 10
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B_AMOUNT <null>
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COALESCE_B_AMT 0
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"""
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@pytest.mark.version('>=3.0')
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def test_1(act_1: Action):
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act_1.expected_stdout = expected_stdout_1
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act_1.execute()
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assert act_1.clean_stdout == act_1.clean_expected_stdout
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