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64 lines
1.6 KiB
Python
64 lines
1.6 KiB
Python
#coding:utf-8
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"""
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ID: issue-4453
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ISSUE: 4453
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TITLE: Using COLLATE UNICODE_CI_AI in WHERE clause (not indexed) is extremely slow
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DESCRIPTION:
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JIRA: CORE-4125
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FBTEST: bugs.core_4125
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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 view test as
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with recursive
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r as (select 0 i from rdb$database union all select r.i+1 from r where r.i<98)
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select cast(r1.i*100 + r0.i as varchar(10)) as fx
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from r r1, r r0;
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commit;
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"""
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db = db_factory(charset='UTF8', init=init_script)
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test_script = """
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-- Checked on 2.5.1: ratio = ~105, on 2.5.2: ~132, since 2.5.3: ~1.
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set list on;
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set term ^;
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execute block returns(result varchar(50) ) as
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declare t0 timestamp;
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declare t1 timestamp;
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declare t2 timestamp;
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declare n int;
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declare r numeric(18,3);
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begin
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t0='now';
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select count(*) from test where fx collate unicode_ci like '%8%' into n;
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t1='now';
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select count(*) from test where fx collate unicode_ci_ai like '%8%' into n;
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t2='now';
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n = datediff(millisecond from t1 to t2);
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r = 1.000 * n / nullif(datediff(millisecond from t0 to t1), 0);
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if (r is null and n < 100 or r <= 5) then result = 'TIME RATIO IS OK.';
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else result = 'BAD RATIO: '||coalesce(r,' > 100 vs 0.');
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suspend;
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end
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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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RESULT TIME RATIO IS OK.
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"""
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@pytest.mark.version('>=3')
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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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