mirror of
https://github.com/FirebirdSQL/firebird-qa.git
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258 lines
6.9 KiB
Python
258 lines
6.9 KiB
Python
#coding:utf-8
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"""
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ID: issue-4691
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ISSUE: 4691
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TITLE: BUGCHECK(177) for MERGE with multiple matches
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DESCRIPTION:
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NOTES:
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[07.06.2020]
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separate section for FB 4.x was added since fix for core-2274 issued:
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MERGE can not change the same record multiple times.
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For this reason we have to check only presense of ERROR in 4.x and that result is the same after merge and rollback.
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JIRA: CORE-4369
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FBTEST: bugs.core_4369
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"""
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import pytest
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from firebird.qa import *
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db = db_factory()
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# version: 3.0
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test_script_1 = """
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recreate sequence g;
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recreate table t1 (
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id int,
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val int
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);
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recreate table t2 (
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id int,
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val int,
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seq_inside_merge int
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);
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commit;
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insert into t1 (id, val) select row_number() over(), 1000 from rdb$types rows 17; -- '17' ==> 'N', see below formula for seq_inside_merge
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insert into t2(id, val, seq_inside_merge) select id, val, 0 from t1;
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commit;
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alter sequence g restart with 0;
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commit;
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merge into t2 as t
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using t1 as s
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on 1 = 1
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when matched then update set t.val = t.val + s.val, t.seq_inside_merge = next value for g
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;
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set list on;
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select * from t2 order by id;
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-- 1st value of `SEQ_INSIDE_MERGE` = N * (N-1) + 1
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-- All subsequent values are incremented by 1.
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-- Confirmed result in WI-T3.0.0.31374 Beta-1:
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-- "internal Firebird consistency check (applied differences will not fit in record (177), file: sqz.cpp line: 147)"
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"""
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act_1 = isql_act('db', test_script_1)
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expected_stdout_1 = """
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ID 1
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VAL 2000
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SEQ_INSIDE_MERGE 273
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ID 2
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VAL 2000
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SEQ_INSIDE_MERGE 274
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ID 3
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VAL 2000
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SEQ_INSIDE_MERGE 275
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ID 4
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VAL 2000
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SEQ_INSIDE_MERGE 276
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ID 5
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VAL 2000
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SEQ_INSIDE_MERGE 277
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ID 6
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VAL 2000
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SEQ_INSIDE_MERGE 278
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ID 7
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VAL 2000
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SEQ_INSIDE_MERGE 279
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ID 8
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VAL 2000
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SEQ_INSIDE_MERGE 280
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ID 9
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VAL 2000
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SEQ_INSIDE_MERGE 281
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ID 10
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VAL 2000
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SEQ_INSIDE_MERGE 282
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ID 11
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VAL 2000
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SEQ_INSIDE_MERGE 283
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ID 12
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VAL 2000
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SEQ_INSIDE_MERGE 284
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ID 13
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VAL 2000
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SEQ_INSIDE_MERGE 285
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ID 14
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VAL 2000
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SEQ_INSIDE_MERGE 286
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ID 15
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VAL 2000
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SEQ_INSIDE_MERGE 287
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ID 16
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VAL 2000
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SEQ_INSIDE_MERGE 288
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ID 17
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VAL 2000
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SEQ_INSIDE_MERGE 289
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"""
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@pytest.mark.version('>=3.0,<4.0')
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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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# version: 4.0
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test_script_2 = """
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recreate sequence g;
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recreate table t1 (
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id int,
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val int
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);
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recreate table t2 (
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id int,
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val int,
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seq_inside_merge int
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);
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commit;
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insert into t1 (id, val) select row_number() over(), 1000 from rdb$types rows 17; -- '17' ==> 'N', see below formula for seq_inside_merge
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insert into t2(id, val, seq_inside_merge) select id, val, 0 from t1;
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commit;
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alter sequence g restart with 0;
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commit;
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merge into t2 as t
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using t1 as s
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on 1 = 1
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when matched then update set t.val = t.val + s.val, t.seq_inside_merge = next value for g
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;
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-- all values should remain unchanged:
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set list on;
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select * from t2 order by id;
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"""
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act_2 = isql_act('db', test_script_2)
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expected_stdout_2 = """
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ID 1
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VAL 1000
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SEQ_INSIDE_MERGE 0
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ID 2
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VAL 1000
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SEQ_INSIDE_MERGE 0
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ID 3
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VAL 1000
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SEQ_INSIDE_MERGE 0
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ID 4
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VAL 1000
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SEQ_INSIDE_MERGE 0
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ID 5
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VAL 1000
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SEQ_INSIDE_MERGE 0
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ID 6
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VAL 1000
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SEQ_INSIDE_MERGE 0
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ID 7
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VAL 1000
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SEQ_INSIDE_MERGE 0
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ID 8
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VAL 1000
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SEQ_INSIDE_MERGE 0
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ID 9
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VAL 1000
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SEQ_INSIDE_MERGE 0
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ID 10
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VAL 1000
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SEQ_INSIDE_MERGE 0
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ID 11
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VAL 1000
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SEQ_INSIDE_MERGE 0
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ID 12
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VAL 1000
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SEQ_INSIDE_MERGE 0
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ID 13
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VAL 1000
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SEQ_INSIDE_MERGE 0
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ID 14
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VAL 1000
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SEQ_INSIDE_MERGE 0
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ID 15
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VAL 1000
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SEQ_INSIDE_MERGE 0
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ID 16
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VAL 1000
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SEQ_INSIDE_MERGE 0
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ID 17
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VAL 1000
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SEQ_INSIDE_MERGE 0
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"""
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expected_stderr_2 = """
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Statement failed, SQLSTATE = 21000
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Multiple source records cannot match the same target during MERGE
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"""
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@pytest.mark.version('>=4.0')
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def test_2(act_2: Action):
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act_2.expected_stdout = expected_stdout_2
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act_2.expected_stderr = expected_stderr_2
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act_2.execute()
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assert (act_2.clean_stderr == act_2.clean_expected_stderr and
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act_2.clean_stdout == act_2.clean_expected_stdout)
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