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78 lines
2.3 KiB
Python
78 lines
2.3 KiB
Python
#coding:utf-8
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"""
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ID: issue-7094
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ISSUE: https://github.com/FirebirdSQL/firebird/issues/7094
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TITLE: Incorrect indexed lookup of strings when the last keys characters are part of collated contractions and there is multi-segment insensitive descending index
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DESCRIPTION:
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NOTES:
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[15.08.2023] pzotov
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Confirmed problem on 5.0.0.425.
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Checked on 5.0.0.1163, 4.0.4.2978.
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Test fails on 3.0.12 with 'invalid collation attribute', thus min_version was set to 4.0.2.
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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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test_script = """
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create collation unicode_ci_cz for utf8 from unicode case insensitive 'LOCALE=cs_CZ';
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create table t1 (
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c1 varchar(10) character set utf8 collate unicode_ci_cz,
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c2 varchar(10) character set utf8 collate unicode_ci_cz
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);
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insert into t1 (c1) values ('a');
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insert into t1 (c1) values ('b');
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insert into t1 (c1) values ('c');
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insert into t1 (c1) values ('ch');
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insert into t1 (c1) values ('d');
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insert into t1 (c1) values ('e');
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insert into t1 (c1) values ('f');
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update t1 set c2 = c1;
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commit;
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create desc index t1_c1_c2_desc on t1 (c1, c2);
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set list on;
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set plan on;
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-- no data was displayed here before fix:
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select t1.* from t1 where c1 > 'c' order by c1, c2;
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select t1.* from t1 where c1 > 'c' plan (t1 natural) order by c1, c2;
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"""
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act = isql_act('db', test_script)
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expected_stdout = """
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PLAN SORT (T1 INDEX (T1_C1_C2_DESC))
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C1 d
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C2 d
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C1 e
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C2 e
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C1 f
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C2 f
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C1 ch
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C2 ch
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PLAN SORT (T1 NATURAL)
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C1 d
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C2 d
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C1 e
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C2 e
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C1 f
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C2 f
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C1 ch
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C2 ch
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"""
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@pytest.mark.version('>=4.0.2')
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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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