ClickHouse/tests/performance/hashed_dictionary.xml

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<test>
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<create_query>
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CREATE TABLE simple_key_hashed_dictionary_source_table
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(
id UInt64,
value_int UInt64,
value_string String,
value_decimal Decimal64(8),
value_string_nullable Nullable(String)
) ENGINE = Memory;
</create_query>
<create_query>
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CREATE TABLE complex_key_hashed_dictionary_source_table
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(
id UInt64,
id_key String,
value_int UInt64,
value_string String,
value_decimal Decimal64(8),
value_string_nullable Nullable(String)
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) ENGINE = Memory;
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</create_query>
<create_query>
CREATE DICTIONARY simple_key_hashed_dictionary
(
id UInt64,
value_int UInt64,
value_string String,
value_decimal Decimal64(8),
value_string_nullable Nullable(String)
)
PRIMARY KEY id
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SOURCE(CLICKHOUSE(DB 'default' TABLE 'simple_key_hashed_dictionary_source_table'))
LAYOUT(HASHED())
LIFETIME(MIN 0 MAX 1000);
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</create_query>
<create_query>
CREATE DICTIONARY complex_key_hashed_dictionary
(
id UInt64,
id_key String,
value_int UInt64,
value_string String,
value_decimal Decimal64(8),
value_string_nullable Nullable(String)
)
PRIMARY KEY id, id_key
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SOURCE(CLICKHOUSE(DB 'default' TABLE 'complex_key_hashed_dictionary_source_table'))
LAYOUT(COMPLEX_KEY_HASHED())
LIFETIME(MIN 0 MAX 1000);
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</create_query>
<fill_query>
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INSERT INTO simple_key_hashed_dictionary_source_table
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SELECT number, number, toString(number), toDecimal64(number, 8), toString(number)
FROM system.numbers
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LIMIT 5000000;
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</fill_query>
<fill_query>
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INSERT INTO complex_key_hashed_dictionary_source_table
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SELECT number, toString(number), number, toString(number), toDecimal64(number, 8), toString(number)
FROM system.numbers
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LIMIT 5000000;
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</fill_query>
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<substitutions>
<substitution>
<name>column_name</name>
<values>
<value>'value_int'</value>
<value>'value_string'</value>
<value>'value_decimal'</value>
<value>'value_string_nullable'</value>
</values>
</substitution>
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<substitution>
<name>elements_count</name>
<values>
<value>5000000</value>
<value>7500000</value>
</values>
</substitution>
</substitutions>
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<query>
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WITH rand64() % toUInt64({elements_count}) as key
SELECT dictGet('default.simple_key_hashed_dictionary', {column_name}, key)
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FROM system.numbers
LIMIT {elements_count}
FORMAT Null;
</query>
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<query>
WITH rand64() % toUInt64({elements_count}) as key
SELECT dictHas('default.simple_key_hashed_dictionary', key)
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FROM system.numbers
LIMIT {elements_count}
FORMAT Null;
</query>
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<query>
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WITH (rand64() % toUInt64({elements_count}), toString(rand64() % toUInt64({elements_count}))) as key
SELECT dictGet('default.complex_key_hashed_dictionary', {column_name}, key)
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FROM system.numbers
LIMIT {elements_count}
FORMAT Null;
</query>
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<query>
WITH (rand64() % toUInt64({elements_count}), toString(rand64() % toUInt64({elements_count}))) as key
SELECT dictHas('default.complex_key_hashed_dictionary', key)
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FROM system.numbers
LIMIT {elements_count}
FORMAT Null;
</query>
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<drop_query>DROP TABLE IF EXISTS simple_key_hashed_dictionary_source_table;</drop_query>
<drop_query>DROP TABLE IF EXISTS complex_key_hashed_dictionary_source_table;</drop_query>
<drop_query>DROP DICTIONARY IF EXISTS simple_key_hashed_dictionary;</drop_query>
<drop_query>DROP DICTIONARY IF EXISTS complex_key_hashed_dictionary;</drop_query>
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</test>