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44 lines
1.3 KiB
SQL
44 lines
1.3 KiB
SQL
DROP TABLE IF EXISTS t_ttl_modify_column;
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CREATE TABLE t_ttl_modify_column
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(
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InsertionDateTime DateTime,
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TTLDays Int32 DEFAULT CAST(365, 'Int32')
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)
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ENGINE = MergeTree
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ORDER BY tuple()
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TTL InsertionDateTime + toIntervalDay(TTLDays)
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SETTINGS min_bytes_for_wide_part = 0;
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INSERT INTO t_ttl_modify_column VALUES (now(), 23);
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SET mutations_sync = 2;
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ALTER TABLE t_ttl_modify_column modify column TTLDays Int16 DEFAULT CAST(365, 'Int16');
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INSERT INTO t_ttl_modify_column VALUES (now(), 23);
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SELECT sum(rows), groupUniqArray(type) FROM system.parts_columns
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WHERE database = currentDatabase() AND table = 't_ttl_modify_column' AND column = 'TTLDays' AND active;
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DROP TABLE IF EXISTS t_ttl_modify_column;
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CREATE TABLE t_ttl_modify_column (InsertionDateTime DateTime)
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ENGINE = MergeTree
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ORDER BY tuple()
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TTL InsertionDateTime + INTERVAL 3 DAY
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SETTINGS min_bytes_for_wide_part = 0;
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INSERT INTO t_ttl_modify_column VALUES (now());
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ALTER TABLE t_ttl_modify_column MODIFY COLUMN InsertionDateTime Date;
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INSERT INTO t_ttl_modify_column VALUES (now());
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SELECT sum(rows), groupUniqArray(type) FROM system.parts_columns
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WHERE database = currentDatabase() AND table = 't_ttl_modify_column' AND column = 'InsertionDateTime' AND active;
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ALTER TABLE t_ttl_modify_column MODIFY COLUMN InsertionDateTime Float32; -- { serverError 43 }
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DROP TABLE IF EXISTS t_ttl_modify_column;
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