mirror of
https://github.com/FirebirdSQL/firebird-qa.git
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111 lines
3.8 KiB
Python
111 lines
3.8 KiB
Python
#coding:utf-8
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"""
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ID: issue-5218
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ISSUE: 5218
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TITLE: IIF function prevents the condition from being pushed into the union for better optimization
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DESCRIPTION:
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JIRA: CORE-4927
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FBTEST: bugs.core_4927
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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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create or alter procedure sp_test as begin end;
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recreate view vd_union as select 1 id from rdb$database;
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recreate table header_2100(dd_id int, ware_id int, snd_optype_id int);
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recreate table detail_1000 (ware_id int,snd_optype_id int,rcv_optype_id int,snd_id int);
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recreate table detail_1200 (ware_id int,snd_optype_id int,rcv_optype_id int,snd_id int);
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recreate table detail_2000 (ware_id int,snd_optype_id int,rcv_optype_id int,snd_id int);
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recreate table detail_2100 (ware_id int,snd_optype_id int,rcv_optype_id int,snd_id int);
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recreate table detail_3300 (ware_id int,snd_optype_id int,rcv_optype_id int,snd_id int);
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recreate view vd_union as
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select 'd1000' src,q.*
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from detail_1000 q
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union all
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select 'd1200', q.*
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from detail_1200 q
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union all
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select 'd2000', q.*
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from detail_2000 q
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union all
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select 'd2100', q.*
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from detail_2100 q
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union all
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select 'd3300', q.*
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from detail_3300 q
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;
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commit;
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set term ^;
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create or alter procedure sp_test returns(result int) as
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begin
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for
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select count(*)
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from (
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select
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d.dd_id,
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d.ware_id,
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iif(1 = 0, 3300, 2100) as snd_optype_id -- this caused engine to unnecessary scans of tables which did not contain data searched for
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from header_2100 d
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) d
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left join vd_union qd on
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qd.ware_id = d.ware_id
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and qd.snd_optype_id = d.snd_optype_id
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and qd.rcv_optype_id is not distinct from 3300
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and qd.snd_id = d.dd_id
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into result
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do
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suspend;
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end
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^
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set term ;^
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commit;
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insert into header_2100(dd_id, ware_id, snd_optype_id) values(1, 11, 2100);
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commit;
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insert into detail_1000 (ware_id,snd_optype_id,rcv_optype_id,snd_id) values( 11, 1000, 1200, 1);
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insert into detail_1200 (ware_id,snd_optype_id,rcv_optype_id,snd_id) values( 11, 1200, 2000, 1);
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insert into detail_2000 (ware_id,snd_optype_id,rcv_optype_id,snd_id) values( 11, 2000, 2100, 1);
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insert into detail_2100 (ware_id,snd_optype_id,rcv_optype_id,snd_id) values( 11, 2100, 3300, 1);
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insert into detail_3300 (ware_id,snd_optype_id,rcv_optype_id,snd_id) values( 11, 3300, null, 1);
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commit;
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create index d1000_wsrs on detail_1000 (ware_id,snd_optype_id,rcv_optype_id,snd_id);
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create index d1200_wsrs on detail_1200 (ware_id,snd_optype_id,rcv_optype_id,snd_id);
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create index d2000_wsrs on detail_2000 (ware_id,snd_optype_id,rcv_optype_id,snd_id);
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create index d2100_wsrs on detail_2100 (ware_id,snd_optype_id,rcv_optype_id,snd_id);
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create index d3300_wsrs on detail_3300 (ware_id,snd_optype_id,rcv_optype_id,snd_id);
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commit;
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"""
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db = db_factory(init=init_script)
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act = python_act('db', substitutions=[('^((?!HEADER_|DETAIL_).)*$', ''),
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('HEADER_2100.*', 'HEADER_2100'),
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('DETAIL_2100.*', 'DETAIL_2100')])
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expected_stdout = """
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HEADER_2100
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DETAIL_2100
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"""
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trace = ['time_threshold = 0',
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'log_initfini = false',
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'log_statement_finish = true',
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'print_perf = true',
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]
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@pytest.mark.trace
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@pytest.mark.version('>=3.0')
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def test_1(act: Action, capsys):
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with act.trace(db_events=trace):
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act.isql(switches=[], input='set list on; select result from sp_test;')
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# Check
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act.expected_stdout = expected_stdout
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act.trace_to_stdout()
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assert act.clean_stdout == act.clean_expected_stdout
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