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51 lines
1.7 KiB
SQL
51 lines
1.7 KiB
SQL
DROP TABLE IF EXISTS t_skip_index_insert;
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CREATE TABLE t_skip_index_insert
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(
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a UInt64,
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b UInt64,
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INDEX idx_a a TYPE minmax,
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INDEX idx_b b TYPE set(3)
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)
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ENGINE = MergeTree ORDER BY tuple() SETTINGS index_granularity = 4;
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SET enable_analyzer = 1;
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SET materialize_skip_indexes_on_insert = 0;
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SYSTEM STOP MERGES t_skip_index_insert;
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INSERT INTO t_skip_index_insert SELECT number, number / 50 FROM numbers(100);
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INSERT INTO t_skip_index_insert SELECT number, number / 50 FROM numbers(100, 100);
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SELECT count() FROM t_skip_index_insert WHERE a >= 110 AND a < 130 AND b = 2;
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EXPLAIN indexes = 1 SELECT count() FROM t_skip_index_insert WHERE a >= 110 AND a < 130 AND b = 2;
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SYSTEM START MERGES t_skip_index_insert;
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OPTIMIZE TABLE t_skip_index_insert FINAL;
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SELECT count() FROM t_skip_index_insert WHERE a >= 110 AND a < 130 AND b = 2;
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EXPLAIN indexes = 1 SELECT count() FROM t_skip_index_insert WHERE a >= 110 AND a < 130 AND b = 2;
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TRUNCATE TABLE t_skip_index_insert;
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INSERT INTO t_skip_index_insert SELECT number, number / 50 FROM numbers(100);
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INSERT INTO t_skip_index_insert SELECT number, number / 50 FROM numbers(100, 100);
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SET mutations_sync = 2;
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ALTER TABLE t_skip_index_insert MATERIALIZE INDEX idx_a;
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ALTER TABLE t_skip_index_insert MATERIALIZE INDEX idx_b;
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SELECT count() FROM t_skip_index_insert WHERE a >= 110 AND a < 130 AND b = 2;
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EXPLAIN indexes = 1 SELECT count() FROM t_skip_index_insert WHERE a >= 110 AND a < 130 AND b = 2;
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DROP TABLE IF EXISTS t_skip_index_insert;
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SYSTEM FLUSH LOGS;
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SELECT count(), sum(ProfileEvents['MergeTreeDataWriterSkipIndicesCalculationMicroseconds'])
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FROM system.query_log
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WHERE current_database = currentDatabase()
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AND query LIKE 'INSERT INTO t_skip_index_insert SELECT%'
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AND type = 'QueryFinish';
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