ClickHouse/tests/performance/codecs_float_insert.xml

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<test>
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<settings>
<allow_suspicious_codecs>1</allow_suspicious_codecs>
</settings>
<substitutions>
<substitution>
<name>codec</name>
<values>
<value>NONE</value> <!-- as a baseline -->
<value>LZ4</value>
<value>ZSTD</value>
<value>DoubleDelta</value>
<value>Gorilla</value>
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<value>FPC</value>
</values>
</substitution>
<substitution>
<name>type</name>
<values>
<value>Float64</value>
</values>
</substitution>
<substitution>
<name>seq_type</name>
<values>
<value>seq</value>
<value>mon</value>
<value>rnd</value>
</values>
</substitution>
<substitution>
<name>num_rows</name>
<values>
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<value>20000000</value>
</values>
</substitution>
</substitutions>
<create_query>
CREATE TABLE codec_{seq_type}_{type}_{codec} (n {type} CODEC({codec}))
ENGINE = MergeTree PARTITION BY tuple() ORDER BY tuple()
SETTINGS parts_to_delay_insert = 5000, parts_to_throw_insert = 5000;
</create_query>
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<create_query>system stop merges</create_query>
<!-- Using limit to make query finite, allowing it to be run multiple times in a loop, reducing mean error -->
<query>INSERT INTO codec_seq_{type}_{codec} (n) SELECT number/pi() FROM system.numbers LIMIT {num_rows} SETTINGS max_threads=1</query>
<query>INSERT INTO codec_mon_{type}_{codec} (n) SELECT number+sin(number) FROM system.numbers LIMIT {num_rows} SETTINGS max_threads=1</query>
<query>INSERT INTO codec_rnd_{type}_{codec} (n) SELECT (intHash64(number) - 4294967295)/pi() FROM system.numbers LIMIT {num_rows} SETTINGS max_threads=1</query>
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<drop_query>system start merges</drop_query>
<drop_query>DROP TABLE IF EXISTS codec_{seq_type}_{type}_{codec}</drop_query>
</test>