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20 lines
619 B
MySQL
20 lines
619 B
MySQL
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drop table if exists x;
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create table x (i int, j int) engine MergeTree partition by i order by j settings index_granularity = 1;
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insert into x values (1, 1), (1, 2), (1, 3), (2, 4), (2, 5), (2, 6);
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set max_rows_to_read = 3;
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select * from x where _partition_id = partitionID(1);
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set max_rows_to_read = 4; -- one row for subquery
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select * from x where _partition_id in (select partitionID(number + 1) from numbers(1));
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-- trivial count optimization test
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set max_rows_to_read = 1; -- one row for subquery
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select count() from x where _partition_id in (select partitionID(number + 1) from numbers(1));
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drop table x;
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