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17 lines
814 B
SQL
17 lines
814 B
SQL
CREATE TABLE mv_source (a Int64, insert_time DateTime) ENGINE = MergeTree() ORDER BY insert_time;
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CREATE TABLE mv_target (a Int64, insert_time DateTime) ENGINE = MergeTree() ORDER BY insert_time;
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CREATE MATERIALIZED VIEW source_to_target to mv_target as Select * from mv_source where a not in (Select sleepEachRow(0.1) from numbers(50));
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ALTER TABLE mv_source MODIFY TTL insert_time + toIntervalDay(1);
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SYSTEM FLUSH LOGS;
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-- This is a fancy way to check that the MV hasn't been called (no functions executed by ALTER)
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SELECT
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ProfileEvents['FunctionExecute'],
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ProfileEvents['TableFunctionExecute']
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FROM system.query_log
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WHERE
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type = 'QueryFinish' AND
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query like '%ALTER TABLE mv_source%' AND
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current_database = currentDatabase() AND
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event_time > now() - INTERVAL 10 minute;
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