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65 lines
2.1 KiB
Python
65 lines
2.1 KiB
Python
#coding:utf-8
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"""
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ID: issue-6522
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ISSUE: https://github.com/FirebirdSQL/firebird/issues/6522
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TITLE: MERGE statement loses parameters in WHEN (NOT) MATCHED clause that will never be matched, crashes server in some situations
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DESCRIPTION:
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NOTES:
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[14.12.2021] pcisar
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It's impossible to reimplement it in the same way with new driver.
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PROBLEM:
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Original test used two parameter values where 3 parameters are expected, but
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new driver does not even allow that as it checks number of values with number of
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parameters - returned by iMessageMetadata.get_count().
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ALSO, as new driver uses OO API, it does not use SQLDA structures at all.
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[29.12.2023] pzotov
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Problem can be reproduced if we run MERGE using ISQL utility with 'set sqlda_display on'.
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Example was provided by Mark:
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https://github.com/FirebirdSQL/firebird/issues/6522#issuecomment-826246877
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Confirmed crash on 3.0.6.33283 (date of build: 15.04.2020).
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Checked on 3.0.6.33285 (16.04.2020) -- all fine.
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Checked on 6.0.0.195, 5.0.0.1305, 4.0.5.3049.
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JIRA: CORE-6280
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FBTEST: bugs.core_6280
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"""
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import pytest
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from firebird.qa import *
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init_script = """
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recreate table t(i int not null primary key, j int);
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"""
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db = db_factory(init=init_script)
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test_script = """
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set sqlda_display on;
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merge into t using (select 1 x from rdb$database) on 1 = 1
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when matched then update set j = ?
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when matched and i = ? then delete
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when not matched then insert (i, j) values (1, ?);
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"""
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act = isql_act('db', test_script, substitutions=[('^((?!sqltype:|SQLSTATE|[Ee]rror|SQLDA).)*$', ''), ('[ \t]+', ' ')])
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expected_stdout = """
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01: sqltype: 496 LONG Nullable scale: 0 subtype: 0 len: 4
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02: sqltype: 496 LONG Nullable scale: 0 subtype: 0 len: 4
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03: sqltype: 496 LONG Nullable scale: 0 subtype: 0 len: 4
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Statement failed, SQLSTATE = 07002
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Dynamic SQL Error
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-SQLDA error
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-No SQLDA for input values provided
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"""
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@pytest.mark.version('>=3.0.6')
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def test_1(act: Action):
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act.expected_stdout = expected_stdout
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act.execute(combine_output = True)
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assert act.clean_stdout == act.clean_expected_stdout
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