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111 lines
2.5 KiB
Python
111 lines
2.5 KiB
Python
#coding:utf-8
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"""
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ID: issue-3811
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ISSUE: 3811
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TITLE: Inefficient optimization (regression)
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DESCRIPTION:
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NOTES:
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It seems that we have regression in current 4.0 snapshots (elapsed time more than 10x comparing with 2.5).
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Also, 4.0 has different plan comparing with 3.0.
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After discuss with dimitr it was decided to commit this test into fbt-repo in order to have constant
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reminder about this issue.
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Currently this test should FAIL on 4.0!
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JIRA: CORE-3450
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FBTEST: bugs.core_3450
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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 or alter procedure sp_2 as begin end;
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recreate table test_1 (f1 int, f2 int, f3 int);
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create index test_1_f1 on test_1(f1);
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create index test_1_f2 on test_1(f2);
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commit;
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recreate table test_2 (f1 int, f2 int);
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create index test_2_f1 on test_2(f1);
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create index test_2_f2 on test_2(f2);
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commit;
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recreate table test_3 (f1 int);
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create index test_3_f1 on test_3(f1);
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commit;
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set term ^;
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create or alter procedure sp_1 returns (f1 int)
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as begin
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f1=1;
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suspend;
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end
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^
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create or alter procedure sp_2 as
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declare i int;
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declare t1_lim int = 1000;
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declare t2_lim int = 100;
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declare t3_lim int = 10;
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begin
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i=0;
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while (i<t1_lim) do begin
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i=i+1;
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insert into test_1 values (:i, 1, 3);
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end
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i=0;
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while (i<t2_lim) do begin
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i=i+1;
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insert into test_2 values (:i, 2);
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end
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i=0;
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while (i<t3_lim) do begin
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i=i+1;
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insert into test_3 values (3);
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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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execute procedure sp_2;
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commit;
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set statistics index test_1_f1;
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set statistics index test_1_f2;
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set statistics index test_2_f1;
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set statistics index test_2_f2;
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set statistics index test_3_f1;
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commit;
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set planonly;
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select t2.f1
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from test_2 t2
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join test_1 t1 on t1.f1=t2.f1
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join sp_1 p1 on p1.f1=t1.f2
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join test_3 t3 on t3.f1=t1.f3
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where t2.f2=2
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;
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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 (JOIN (P1 NATURAL, T1 INDEX (TEST_1_F2)), T2 INDEX (TEST_2_F1), T3 INDEX (TEST_3_F1))
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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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if act.is_version('>=4'):
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pytest.skip("See test NOTES")
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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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