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12 lines
448 B
MySQL
12 lines
448 B
MySQL
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drop table if exists t;
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drop table if exists t_buf;
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create table t (x UInt64) engine = MergeTree order by (x, intHash64(x)) sample by intHash64(x);
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insert into t select number from numbers(10000);
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create table t_buf as t engine = Buffer(currentDatabase(), 't', 16, 20, 100, 100000, 10000000, 50000000, 250000000);
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insert into t_buf values (1);
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select count() from t_buf sample 1/2 format Null;
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drop table if exists t_buf;
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drop table if exists t;
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