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16 lines
562 B
MySQL
16 lines
562 B
MySQL
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-- https://github.com/ClickHouse/ClickHouse/issues/37900
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drop table if exists t;
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drop table if exists t_mv;
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create table t (a UInt64) Engine = Null;
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create materialized view t_mv Engine = Null AS select now() as ts, max(a) from t group by ts;
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insert into t select * from numbers_mt(10e6) settings max_threads = 16, max_insert_threads=16;
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system flush logs;
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select arrayUniq(thread_ids)>=16 from system.query_log where
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event_date >= yesterday() and
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current_database = currentDatabase() and
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type = 'QueryFinish' and
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startsWith(query, 'insert');
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