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36 lines
1.1 KiB
SQL
36 lines
1.1 KiB
SQL
DROP TABLE IF EXISTS data_01917;
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DROP TABLE IF EXISTS data_01917_2;
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CREATE TABLE data_01917
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(
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key Int,
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d1 Int,
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d1_null Nullable(Int),
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INDEX d1_idx d1 TYPE minmax GRANULARITY 1,
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INDEX d1_null_idx assumeNotNull(d1_null) TYPE minmax GRANULARITY 1
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)
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Engine=MergeTree()
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ORDER BY key;
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CREATE TABLE data_01917_2
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(
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name String,
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frequency UInt64,
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INDEX memory (frequency * length(name)) TYPE set(1000) GRANULARITY 5,
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INDEX sample_index1 (length(name), name) TYPE minmax GRANULARITY 4,
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INDEX sample_index2 (lower(name), name) TYPE ngrambf_v1(3, 256, 2, 0) GRANULARITY 4
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)
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Engine=MergeTree()
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ORDER BY name;
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SELECT * FROM system.data_skipping_indices WHERE database = currentDatabase();
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SELECT count(*) FROM system.data_skipping_indices WHERE table = 'data_01917' AND database = currentDatabase();
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SELECT count(*) FROM system.data_skipping_indices WHERE table = 'data_01917_2' AND database = currentDatabase();
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SELECT name FROM system.data_skipping_indices WHERE type = 'minmax' AND database = currentDatabase();
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DROP TABLE data_01917;
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DROP TABLE data_01917_2;
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