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14 lines
547 B
MySQL
14 lines
547 B
MySQL
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drop table if exists tab;
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create table tab (x UInt64, v UInt64) engine = ReplacingMergeTree(v) order by (x, sipHash64(x)) sample by sipHash64(x);
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insert into tab select number, number from numbers(1000);
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select * from tab final sample 1/2 order by x limit 5;
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drop table tab;
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create table tab (x UInt64, v UInt64) engine = ReplacingMergeTree(v) order by (x, sipHash64(x)) sample by sipHash64(x);
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insert into tab select number, number from numbers(1000);
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select sipHash64(x) from tab sample 1/2 order by x, sipHash64(x) limit 5;
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drop table tab;
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