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https://github.com/ClickHouse/ClickHouse.git
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68 lines
2.1 KiB
SQL
68 lines
2.1 KiB
SQL
DROP TABLE IF EXISTS test_hierarchy_source_table;
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CREATE TABLE test_hierarchy_source_table
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(
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id UInt64,
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parent_id UInt64
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) ENGINE=MergeTree ORDER BY id;
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INSERT INTO test_hierarchy_source_table VALUES (1, 0);
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DROP DICTIONARY IF EXISTS hierarchy_flat_dictionary_index;
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CREATE DICTIONARY hierarchy_flat_dictionary_index
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(
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id UInt64,
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parent_id UInt64 BIDIRECTIONAL
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)
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PRIMARY KEY id
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SOURCE(CLICKHOUSE(TABLE 'test_hierarchy_source_table'))
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LAYOUT(FLAT())
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LIFETIME(0); -- {serverError 36 }
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DROP DICTIONARY IF EXISTS hierarchy_flat_dictionary_index;
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CREATE DICTIONARY hierarchy_flat_dictionary_index
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(
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id UInt64,
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parent_id UInt64 HIERARCHICAL BIDIRECTIONAL
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)
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PRIMARY KEY id
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SOURCE(CLICKHOUSE(TABLE 'test_hierarchy_source_table'))
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LAYOUT(FLAT())
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LIFETIME(0);
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SELECT * FROM hierarchy_flat_dictionary_index;
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SELECT hierarchical_index_bytes_allocated > 0 FROM system.dictionaries WHERE name = 'hierarchy_flat_dictionary_index' AND database = currentDatabase();
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DROP DICTIONARY hierarchy_flat_dictionary_index;
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DROP DICTIONARY IF EXISTS hierarchy_hashed_dictionary_index;
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CREATE DICTIONARY hierarchy_hashed_dictionary_index
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(
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id UInt64,
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parent_id UInt64 HIERARCHICAL BIDIRECTIONAL
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)
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PRIMARY KEY id
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SOURCE(CLICKHOUSE(TABLE 'test_hierarchy_source_table'))
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LAYOUT(FLAT())
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LIFETIME(0);
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SELECT * FROM hierarchy_hashed_dictionary_index;
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SELECT hierarchical_index_bytes_allocated > 0 FROM system.dictionaries WHERE name = 'hierarchy_hashed_dictionary_index' AND database = currentDatabase();
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DROP DICTIONARY hierarchy_hashed_dictionary_index;
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DROP DICTIONARY IF EXISTS hierarchy_hashed_array_dictionary_index;
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CREATE DICTIONARY hierarchy_hashed_array_dictionary_index
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(
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id UInt64,
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parent_id UInt64 HIERARCHICAL
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)
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PRIMARY KEY id
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SOURCE(CLICKHOUSE(TABLE 'test_hierarchy_source_table'))
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LAYOUT(HASHED_ARRAY())
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LIFETIME(0);
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SELECT * FROM hierarchy_hashed_array_dictionary_index;
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SELECT hierarchical_index_bytes_allocated > 0 FROM system.dictionaries WHERE name = 'hierarchy_hashed_array_dictionary_index' AND database = currentDatabase();
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DROP DICTIONARY hierarchy_hashed_array_dictionary_index;
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DROP TABLE test_hierarchy_source_table;
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