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110 lines
4.8 KiB
SQL
110 lines
4.8 KiB
SQL
SELECT '*** Not partitioned ***';
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DROP TABLE IF EXISTS not_partitioned;
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CREATE TABLE not_partitioned(x UInt8) ENGINE MergeTree ORDER BY x;
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INSERT INTO not_partitioned VALUES (1), (2), (3);
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INSERT INTO not_partitioned VALUES (4), (5);
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SELECT 'Parts before OPTIMIZE:';
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SELECT partition, name FROM system.parts WHERE database = currentDatabase() AND table = 'not_partitioned' AND active ORDER BY name;
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OPTIMIZE TABLE not_partitioned PARTITION tuple() FINAL;
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SELECT 'Parts after OPTIMIZE:';
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SELECT partition, name FROM system.parts WHERE database = currentDatabase() AND table = 'not_partitioned' AND active ORDER BY name;
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SELECT 'Sum before DETACH PARTITION:';
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SELECT sum(x) FROM not_partitioned;
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ALTER TABLE not_partitioned DETACH PARTITION ID 'all';
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SELECT 'Sum after DETACH PARTITION:';
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SELECT sum(x) FROM not_partitioned;
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SELECT 'system.detached_parts after DETACH PARTITION:';
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SELECT * FROM system.detached_parts WHERE table = 'not_partitioned';
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DROP TABLE not_partitioned;
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SELECT '*** Partitioned by week ***';
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DROP TABLE IF EXISTS partitioned_by_week;
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CREATE TABLE partitioned_by_week(d Date, x UInt8) ENGINE = MergeTree PARTITION BY toMonday(d) ORDER BY x;
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-- 2000-01-03 belongs to a different week than 2000-01-01 and 2000-01-02
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INSERT INTO partitioned_by_week VALUES ('2000-01-01', 1), ('2000-01-02', 2), ('2000-01-03', 3);
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INSERT INTO partitioned_by_week VALUES ('2000-01-03', 4), ('2000-01-03', 5);
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SELECT 'Parts before OPTIMIZE:';
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SELECT partition, name FROM system.parts WHERE database = currentDatabase() AND table = 'partitioned_by_week' AND active ORDER BY name;
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OPTIMIZE TABLE partitioned_by_week PARTITION '2000-01-03' FINAL;
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SELECT 'Parts after OPTIMIZE:';
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SELECT partition, name FROM system.parts WHERE database = currentDatabase() AND table = 'partitioned_by_week' AND active ORDER BY name;
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SELECT 'Sum before DROP PARTITION:';
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SELECT sum(x) FROM partitioned_by_week;
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ALTER TABLE partitioned_by_week DROP PARTITION '1999-12-27';
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SELECT 'Sum after DROP PARTITION:';
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SELECT sum(x) FROM partitioned_by_week;
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DROP TABLE partitioned_by_week;
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SELECT '*** Partitioned by a (Date, UInt8) tuple ***';
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DROP TABLE IF EXISTS partitioned_by_tuple;
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CREATE TABLE partitioned_by_tuple(d Date, x UInt8, y UInt8) ENGINE MergeTree ORDER BY x PARTITION BY (d, x);
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INSERT INTO partitioned_by_tuple VALUES ('2000-01-01', 1, 1), ('2000-01-01', 2, 2), ('2000-01-02', 1, 3);
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INSERT INTO partitioned_by_tuple VALUES ('2000-01-02', 1, 4), ('2000-01-01', 1, 5);
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SELECT 'Parts before OPTIMIZE:';
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SELECT partition, name FROM system.parts WHERE database = currentDatabase() AND table = 'partitioned_by_tuple' AND active ORDER BY name;
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OPTIMIZE TABLE partitioned_by_tuple PARTITION ('2000-01-01', 1) FINAL;
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OPTIMIZE TABLE partitioned_by_tuple PARTITION ('2000-01-02', 1) FINAL;
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SELECT 'Parts after OPTIMIZE:';
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SELECT partition, name FROM system.parts WHERE database = currentDatabase() AND table = 'partitioned_by_tuple' AND active ORDER BY name;
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SELECT 'Sum before DETACH PARTITION:';
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SELECT sum(y) FROM partitioned_by_tuple;
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ALTER TABLE partitioned_by_tuple DETACH PARTITION ID '20000101-1';
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SELECT 'Sum after DETACH PARTITION:';
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SELECT sum(y) FROM partitioned_by_tuple;
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DROP TABLE partitioned_by_tuple;
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SELECT '*** Partitioned by String ***';
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DROP TABLE IF EXISTS partitioned_by_string;
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CREATE TABLE partitioned_by_string(s String, x UInt8) ENGINE = MergeTree PARTITION BY s ORDER BY x;
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INSERT INTO partitioned_by_string VALUES ('aaa', 1), ('aaa', 2), ('bbb', 3);
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INSERT INTO partitioned_by_string VALUES ('bbb', 4), ('aaa', 5);
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SELECT 'Parts before OPTIMIZE:';
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SELECT partition, name FROM system.parts WHERE database = currentDatabase() AND table = 'partitioned_by_string' AND active ORDER BY name;
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OPTIMIZE TABLE partitioned_by_string PARTITION 'aaa' FINAL;
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SELECT 'Parts after OPTIMIZE:';
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SELECT partition, name FROM system.parts WHERE database = currentDatabase() AND table = 'partitioned_by_string' AND active ORDER BY name;
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SELECT 'Sum before DROP PARTITION:';
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SELECT sum(x) FROM partitioned_by_string;
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ALTER TABLE partitioned_by_string DROP PARTITION 'bbb';
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SELECT 'Sum after DROP PARTITION:';
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SELECT sum(x) FROM partitioned_by_string;
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DROP TABLE partitioned_by_string;
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SELECT '*** Table without columns with fixed size ***';
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DROP TABLE IF EXISTS without_fixed_size_columns;
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CREATE TABLE without_fixed_size_columns(s String) ENGINE MergeTree PARTITION BY length(s) ORDER BY s;
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INSERT INTO without_fixed_size_columns VALUES ('a'), ('aa'), ('b'), ('cc');
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SELECT 'Parts:';
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SELECT partition, name, rows FROM system.parts WHERE database = currentDatabase() AND table = 'without_fixed_size_columns' AND active ORDER BY name;
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SELECT 'Before DROP PARTITION:';
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SELECT * FROM without_fixed_size_columns ORDER BY s;
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ALTER TABLE without_fixed_size_columns DROP PARTITION 1;
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SELECT 'After DROP PARTITION:';
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SELECT * FROM without_fixed_size_columns ORDER BY s;
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DROP TABLE without_fixed_size_columns;
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