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32 lines
893 B
SQL
32 lines
893 B
SQL
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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drop table if exists mt;
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create table mt (n UInt64) engine=MergeTree order by n partition by n % 10;
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set max_rows_to_read = 200;
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insert into mt select * from numbers(100);
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select * from mt where toUInt64(substr(_part, 1, position(_part, '_') - 1)) = 1;
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drop table mt;
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