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49 lines
1.2 KiB
Python
49 lines
1.2 KiB
Python
#coding:utf-8
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"""
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ID: issue-5429
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ISSUE: 5429
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TITLE: Suboptimal join order if one table has a selective predicate and MIN is calculated for the other one
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DESCRIPTION:
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JIRA: CORE-5146
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FBTEST: bugs.core_5146
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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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-- Confirmed:
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-- effective plan on: V3.0.0.32435, T4.0.0.113
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-- ineffect. plan on: V3.0.0.32378, T4.0.0.98
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recreate table houritems(houritemid int, projectid int); -- hi
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recreate table dihourentries(houritemid int, datevalue int); -- he
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create index hi_itemid on houritems(houritemid);
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create index hi_projid on houritems(projectid);
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create index he_itemid on dihourentries(houritemid);
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create index he_datevl on dihourentries(datevalue);
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set planonly;
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select min(he.datevalue)
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from houritems hi inner join dihourentries he on hi.houritemid = he.houritemid
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where hi.projectid = ?;
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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 JOIN (HI INDEX (HI_PROJID), HE INDEX (HE_ITEMID))
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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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