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https://github.com/ClickHouse/ClickHouse.git
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101 lines
3.4 KiB
SQL
101 lines
3.4 KiB
SQL
DROP TABLE IF EXISTS merge;
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CREATE TABLE IF NOT EXISTS merge (d Date DEFAULT '2000-01-01', x UInt64) ENGINE = MergeTree(d, x, 5);
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INSERT INTO merge (x) VALUES (1), (2), (3);
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INSERT INTO merge (x) VALUES (4), (5), (6);
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SELECT * FROM merge ORDER BY _part_index, x;
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OPTIMIZE TABLE merge;
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SELECT * FROM merge ORDER BY _part_index, x;
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DROP TABLE merge;
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CREATE TABLE IF NOT EXISTS merge (d Date DEFAULT '2000-01-01', x UInt64) ENGINE = MergeTree(d, x, 5);
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INSERT INTO merge (x) SELECT number AS x FROM system.numbers LIMIT 10;
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INSERT INTO merge (x) SELECT number + 10 AS x FROM system.numbers LIMIT 10;
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SELECT * FROM merge ORDER BY _part_index, x;
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OPTIMIZE TABLE merge;
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SELECT * FROM merge ORDER BY _part_index, x;
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DROP TABLE merge;
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CREATE TABLE IF NOT EXISTS merge (d Date DEFAULT '2000-01-01', x UInt64) ENGINE = MergeTree(d, x, 5);
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INSERT INTO merge (x) SELECT number + 5 AS x FROM system.numbers LIMIT 10;
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INSERT INTO merge (x) SELECT number AS x FROM system.numbers LIMIT 10;
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SELECT * FROM merge ORDER BY _part_index, x;
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OPTIMIZE TABLE merge;
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SELECT * FROM merge ORDER BY _part_index, x;
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DROP TABLE merge;
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CREATE TABLE IF NOT EXISTS merge (d Date DEFAULT '2000-01-01', x UInt64) ENGINE = MergeTree(d, x, 5);
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INSERT INTO merge (x) SELECT number + 5 AS x FROM system.numbers LIMIT 10;
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INSERT INTO merge (x) SELECT number AS x FROM system.numbers LIMIT 10;
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INSERT INTO merge (x) SELECT number + 9 AS x FROM system.numbers LIMIT 10;
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SELECT * FROM merge ORDER BY _part_index, x;
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OPTIMIZE TABLE merge;
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SELECT * FROM merge ORDER BY _part_index, x;
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DROP TABLE merge;
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CREATE TABLE IF NOT EXISTS merge (d Date DEFAULT '2000-01-01', x UInt64) ENGINE = MergeTree(d, x, 5);
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INSERT INTO merge (x) SELECT number AS x FROM system.numbers LIMIT 10;
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INSERT INTO merge (x) SELECT number + 5 AS x FROM system.numbers LIMIT 10;
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INSERT INTO merge (x) SELECT number + 10 AS x FROM system.numbers LIMIT 10;
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SELECT * FROM merge ORDER BY _part_index, x;
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OPTIMIZE TABLE merge;
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SELECT * FROM merge ORDER BY _part_index, x;
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INSERT INTO merge (x) SELECT number + 5 AS x FROM system.numbers LIMIT 10;
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SELECT * FROM merge ORDER BY _part_index, x;
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OPTIMIZE TABLE merge;
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SELECT * FROM merge ORDER BY _part_index, x;
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INSERT INTO merge (x) SELECT number + 100 AS x FROM system.numbers LIMIT 10;
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SELECT * FROM merge ORDER BY _part_index, x;
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OPTIMIZE TABLE merge;
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SELECT * FROM merge ORDER BY _part_index, x;
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DROP TABLE merge;
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CREATE TABLE IF NOT EXISTS merge (d Date DEFAULT '2000-01-01', x UInt64) ENGINE = MergeTree(d, x, 8192);
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SET min_insert_block_size_rows = 0, min_insert_block_size_bytes = 0;
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SET max_block_size = 8200;
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INSERT INTO merge (x) SELECT number AS x FROM (SELECT * FROM system.numbers LIMIT 8200) ORDER BY rand();
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INSERT INTO merge (x) SELECT number AS x FROM (SELECT * FROM system.numbers LIMIT 8200) ORDER BY rand();
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OPTIMIZE TABLE merge;
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SELECT count(), uniqExact(x), min(x), max(x), sum(x), sum(cityHash64(x)) FROM merge;
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DROP TABLE merge;
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CREATE TABLE IF NOT EXISTS merge (d Date DEFAULT '2000-01-01', x UInt64) ENGINE = MergeTree(d, x, 8192);
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SET max_block_size = 10000;
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INSERT INTO merge (x) SELECT number AS x FROM (SELECT number FROM system.numbers LIMIT 10000);
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INSERT INTO merge (x) SELECT number AS x FROM (SELECT number + 5000 AS number FROM system.numbers LIMIT 10000);
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OPTIMIZE TABLE merge;
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SELECT count(), uniqExact(x), min(x), max(x), sum(x), sum(cityHash64(x)) FROM merge;
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DROP TABLE merge;
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