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19 lines
777 B
MySQL
19 lines
777 B
MySQL
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DROP TABLE IF EXISTS test.collapsing;
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CREATE TABLE test.collapsing(key String, value String, sign Int8) ENGINE CollapsingMergeTree(sign)
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ORDER BY key
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SETTINGS enable_vertical_merge_algorithm=1,
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vertical_merge_algorithm_min_rows_to_activate=0,
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vertical_merge_algorithm_min_columns_to_activate=0;
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INSERT INTO test.collapsing VALUES ('k1', 'k1v1', 1);
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INSERT INTO test.collapsing VALUES ('k1', 'k1v1', -1), ('k1', 'k1v2', 1);
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INSERT INTO test.collapsing VALUES ('k2', 'k2v1', 1), ('k2', 'k2v1', -1), ('k3', 'k3v1', 1);
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INSERT INTO test.collapsing VALUES ('k4', 'k4v1', -1), ('k4', 'k4v2', 1), ('k4', 'k4v2', -1);
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OPTIMIZE TABLE test.collapsing PARTITION tuple() FINAL;
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SELECT * FROM test.collapsing ORDER BY key;
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DROP TABLE test.collapsing;
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