ClickHouse/dbms/tests/performance/trim_whitespace.xml
2020-03-07 22:44:18 +03:00

44 lines
1.3 KiB
XML

<test>
<create_query>
create table if not exists whitespaces
engine = MergeTree() partition by tuple() order by tuple()
as
with 32 - log2(intHash32(number)) + 1 as num_spaces,
repeat(' ', toUInt32(num_spaces)) as spaces
select spaces || toString(number) || spaces value
from numbers_mt(100000000);
</create_query>
<stop_conditions>
<all_of>
<total_time_ms>30000</total_time_ms>
</all_of>
</stop_conditions>
<substitutions>
<substitution>
<name>func</name>
<values>
<value>trimLeft(value)</value>
<value>trimRight(value)</value>
<value>trimBoth(value)</value>
</values>
</substitution>
<substitution>
<name>func_slow</name>
<values>
<value>replaceRegexpOne(value, '^ *', '')</value>
<value>replaceRegexpOne(value, ' *$', '')</value>
<value>replaceRegexpAll(value, '^ *| *$', '')</value>
</values>
</substitution>
</substitutions>
<query>SELECT {func} FROM whitespaces FORMAT Null</query>
<query>SELECT {func_slow} FROM whitespaces LIMIT 10000000 FORMAT Null</query>
<drop_query>DROP TABLE IF EXISTS whitespaces</drop_query>
</test>