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100 lines
2.7 KiB
Python
100 lines
2.7 KiB
Python
#coding:utf-8
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#
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# id: bugs.core_3103
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# title: BAD PLAN with using LEFT OUTER JOIN in SUBSELECT. See also: CORE-3283
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# decription: Ticket subj: Select statement with more non indexed reads in version 2.5RC3 as in version 2.1.3
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# tracker_id: CORE-3103
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# min_versions: ['2.1.7']
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# versions: 2.1.7
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# qmid: None
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import pytest
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from firebird.qa import db_factory, isql_act, Action
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# version: 2.1.7
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# resources: None
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substitutions_1 = []
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init_script_1 = """"""
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db_1 = db_factory(page_size=4096, sql_dialect=3, init=init_script_1)
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test_script_1 = """
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set term ^;
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execute block as
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begin
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begin execute statement 'drop sequence g'; when any do begin end end
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end
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^
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set term ;^
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commit;
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create sequence g;
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commit;
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recreate table bauf(id int);
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commit;
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recreate table bstammdaten(
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id int, maskenkey varchar(10),
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constraint tmain_pk primary key(id) using index bstammdaten_id_pk
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);
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commit;
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recreate table bauf(
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id int
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,bstammdaten_id_maskenkey int
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,constraint tdetl_pk primary key(id) using index bauf_pk
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,constraint tdetl_fk foreign key (bstammdaten_id_maskenkey)
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references bstammdaten(id)
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using index fk_bauf_bstammdaten_id
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);
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commit;
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set term ^;
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execute block as
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declare n_main int = 5000; -- 42000;
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declare i int = 0;
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begin
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while ( i < n_main ) do
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begin
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insert into bstammdaten(id, maskenkey) values(:i, iif(:i < :n_main / 100, '53', cast(rand()*100 as int) ) );
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insert into bauf(id, bstammdaten_id_maskenkey) values (gen_id(g,1), :i);
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if ( rand() < 0.8 ) then
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insert into bauf(id, bstammdaten_id_maskenkey) values (gen_id(g,1), :i);
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i = i + 1;
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end
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end
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^set term ;^
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commit;
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create index bstammdaten_maskenkey on bstammdaten(maskenkey);
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commit;
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set statistics index fk_bauf_bstammdaten_id;
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set statistics index bstammdaten_id_pk;
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commit;
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set planonly;
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select count(*) from bauf
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where id =
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(
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select max(b.id) from bstammdaten a
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left outer join bauf b on b.bstammdaten_id_maskenkey = a.id
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where a.maskenkey='53'
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);
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commit;
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"""
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act_1 = isql_act('db_1', test_script_1, substitutions=substitutions_1)
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expected_stdout_1 = """
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PLAN JOIN (A INDEX (BSTAMMDATEN_MASKENKEY), B INDEX (FK_BAUF_BSTAMMDATEN_ID))
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PLAN (BAUF INDEX (BAUF_PK))
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"""
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@pytest.mark.version('>=2.1.7')
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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_expected_stdout == act_1.clean_stdout
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