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21 lines
809 B
SQL
21 lines
809 B
SQL
DROP TABLE IF EXISTS ttl_empty_parts;
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CREATE TABLE ttl_empty_parts (id UInt32, d Date) ENGINE = MergeTree ORDER BY tuple() PARTITION BY id;
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INSERT INTO ttl_empty_parts SELECT 0, toDate('2005-01-01') + number from numbers(500);
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INSERT INTO ttl_empty_parts SELECT 1, toDate('2050-01-01') + number from numbers(500);
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SELECT count() FROM ttl_empty_parts;
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SELECT count() FROM system.parts WHERE table = 'ttl_empty_parts' AND database = currentDatabase() AND active;
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ALTER TABLE ttl_empty_parts MODIFY TTL d;
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-- To be sure, that task, which clears outdated parts executed.
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DETACH TABLE ttl_empty_parts;
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ATTACH TABLE ttl_empty_parts;
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SELECT count() FROM ttl_empty_parts;
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SELECT count() FROM system.parts WHERE table = 'ttl_empty_parts' AND database = currentDatabase() AND active;
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DROP TABLE ttl_empty_parts;
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