ClickHouse/tests/performance/hierarchical_dictionaries.xml

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<test>
<substitutions>
<substitution>
<name>dictionary_layout</name>
<values>
<value>hashed</value>
<value>hashed_array</value>
</values>
</substitution>
<substitution>
<name>func</name>
<values>
<value>dictGetHierarchy</value>
<value>dictGetDescendants</value>
</values>
</substitution>
</substitutions>
<create_query>
CREATE TABLE hierarchical_dictionary_source_table
(
id UInt64,
parent_id UInt64
) ENGINE = MergeTree ORDER BY id;
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</create_query>
<create_query>
CREATE DICTIONARY hierarchical_{dictionary_layout}_dictionary
(
id UInt64,
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parent_id UInt64 HIERARCHICAL
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)
PRIMARY KEY id
SOURCE(CLICKHOUSE(DB 'default' TABLE 'hierarchical_dictionary_source_table'))
LAYOUT({dictionary_layout})
LIFETIME(0);
</create_query>
<create_query>
CREATE DICTIONARY hierarchical_flat_dictionary
(
id UInt64,
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parent_id UInt64 HIERARCHICAL
)
PRIMARY KEY id
SOURCE(CLICKHOUSE(DB 'default' TABLE 'hierarchical_dictionary_source_table'))
LAYOUT(FLAT(max_array_size 1000001))
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LIFETIME(0);
</create_query>
<fill_query>
INSERT INTO hierarchical_dictionary_source_table
WITH 5000 AS first_level_start, 50000 as second_level_start
SELECT
(number + 1) as id,
multiIf(id > second_level_start, id % (second_level_start - first_level_start) + first_level_start + 1,
id > first_level_start, (id % first_level_start) + 1,
0) as parent_id
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FROM system.numbers
LIMIT 1000000;
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</fill_query>
<query>
SELECT {func}('hierarchical_flat_dictionary', number + 1) FROM numbers(1000000) FORMAT Null;
</query>
<query>
SELECT {func}('hierarchical_{dictionary_layout}_dictionary', number + 1) FROM numbers(1000000) FORMAT Null;
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</query>
<drop_query>DROP TABLE IF EXISTS hierarchical_dictionary_source_table;</drop_query>
<drop_query>DROP DICTIONARY IF EXISTS hierarchical_{dictionary_layout}_dictionary;</drop_query>
<drop_query>DROP DICTIONARY IF EXISTS hierarchical_flat_dictionary;</drop_query>
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</test>