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44 lines
1.6 KiB
SQL
44 lines
1.6 KiB
SQL
DROP TABLE IF EXISTS t_materialize_delete;
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CREATE TABLE t_materialize_delete (id UInt64, v UInt64)
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ENGINE = MergeTree ORDER BY id PARTITION BY id % 10;
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SET mutations_sync = 2;
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INSERT INTO t_materialize_delete SELECT number, number FROM numbers(100);
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SELECT 'Inserted';
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SELECT count(), sum(v) FROM t_materialize_delete;
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SELECT count(), sum(rows), sum(has_lightweight_delete) FROM system.parts WHERE database = currentDatabase() AND table = 't_materialize_delete' AND active;
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SELECT 'Lighweight deleted';
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DELETE FROM t_materialize_delete WHERE id % 7 = 3;
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SELECT count(), sum(v) FROM t_materialize_delete;
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SELECT count(), sum(rows), sum(has_lightweight_delete) FROM system.parts WHERE database = currentDatabase() AND table = 't_materialize_delete' AND active;
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SELECT 'Mask applied';
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ALTER TABLE t_materialize_delete APPLY DELETED MASK;
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SELECT count(), sum(v) FROM t_materialize_delete;
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SELECT count(), sum(rows), sum(has_lightweight_delete) FROM system.parts WHERE database = currentDatabase() AND table = 't_materialize_delete' AND active;
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SELECT 'Lighweight deleted';
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DELETE FROM t_materialize_delete WHERE id % 7 = 4;
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SELECT count(), sum(v) FROM t_materialize_delete;
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SELECT count(), sum(rows), sum(has_lightweight_delete) FROM system.parts WHERE database = currentDatabase() AND table = 't_materialize_delete' AND active;
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SELECT 'Mask applied in partition';
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ALTER TABLE t_materialize_delete APPLY DELETED MASK IN PARTITION 5;
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SELECT count(), sum(v) FROM t_materialize_delete;
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SELECT count(), sum(rows), sum(has_lightweight_delete) FROM system.parts WHERE database = currentDatabase() AND table = 't_materialize_delete' AND active;
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DROP TABLE t_materialize_delete;
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