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21 lines
601 B
MySQL
21 lines
601 B
MySQL
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CREATE TABLE IF NOT EXISTS table_name
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(
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id UInt64
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)
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ENGINE = MergeTree()
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ORDER BY cityHash64(id)
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SAMPLE BY cityHash64(id);
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INSERT INTO table_name SELECT rand() from system.numbers limit 10000;
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INSERT INTO table_name SELECT rand() from system.numbers limit 10000;
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INSERT INTO table_name SELECT rand() from system.numbers limit 10000;
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INSERT INTO table_name SELECT rand() from system.numbers limit 10000;
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INSERT INTO table_name SELECT rand() from system.numbers limit 10000;
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select count() from table_name;
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SELECT count() < 50 * 5 FROM (
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SELECT * FROM table_name SAMPLE 50
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);
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DROP TABLE table_name;
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