ClickHouse/tests/performance/dict_join.xml

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<test>
<create_query>
CREATE TABLE join_dictionary_source_table (key UInt64, value String)
ENGINE = MergeTree ORDER BY key;
</create_query>
<create_query>
CREATE DICTIONARY join_hashed_dictionary (key UInt64, value String)
PRIMARY KEY key
SOURCE(CLICKHOUSE(DB 'default' TABLE 'join_dictionary_source_table'))
LIFETIME(MIN 0 MAX 1000)
LAYOUT(HASHED());
</create_query>
<fill_query>
INSERT INTO join_dictionary_source_table
SELECT number, toString(number)
FROM numbers(1000000);
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</fill_query>
<query>
SELECT COUNT()
FROM join_dictionary_source_table
JOIN join_hashed_dictionary
ON join_dictionary_source_table.key = join_hashed_dictionary.key;
</query>
<query>
SELECT COUNT()
FROM join_dictionary_source_table
JOIN join_hashed_dictionary
ON join_dictionary_source_table.key = toUInt64(join_hashed_dictionary.key);
</query>
<drop_query>DROP DICTIONARY IF EXISTS join_hashed_dictionary;</drop_query>
<drop_query>DROP TABLE IF EXISTS join_dictionary_source_table;</drop_query>
</test>