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56 lines
1.7 KiB
Python
56 lines
1.7 KiB
Python
#coding:utf-8
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"""
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ID: issue-1092
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ISSUE: 1092
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TITLE: Tricky index names can defeat the parsing logic when generating a human readable plan
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DESCRIPTION:
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JIRA: CORE-2508
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FBTEST: bugs.core_2508
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NOTES:
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[06.09.2023]
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Replaced query so that DIFFERENT indices are involved (because WHERE-expression refers to diff. columns).
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This is needed in FB 4.x+ after:
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https://github.com/FirebirdSQL/firebird/commit/0493422c9f729e27be0112ab60f77e753fabcb5b
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("Better processing and optimization if IN <list> predicates (#7707)")
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Old query that did use IN predicate no more applicable here: all occurences of the same index
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that works for mining data are now "collapsed" to the single one, i.e.:
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PLAN (<tabname> INDEX (<idxname>, <idxname>, <idxname>)) ==> PLAN (<tabname> INDEX (<idxname>)).
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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 sequence g;
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create table t(a int, b int);
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insert into t(a,b) select gen_id(g,1),gen_id(g,1) from rdb$types;
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commit;
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create index "abc(" on t(a);
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create descending index "mod(" on t(b);
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set planonly;
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select * from t where a <= 33 and b >= 22;
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-- On 2.5.9.27156 plan for that query was:
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-- PLAN (T INDEX (abc(mod())
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-- ^^^
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-- |
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-- +---- NO comma here!
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-- Compare with 3.x:
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-- PLAN (T INDEX (abc(, mod())
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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 (T INDEX (abc(, mod())
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"""
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@pytest.mark.version('>=3.0')
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def test_1(act: Action):
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act.expected_stdout = expected_stdout
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act.execute()
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assert act.clean_stdout == act.clean_expected_stdout
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