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18 lines
371 B
MySQL
18 lines
371 B
MySQL
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drop table if exists t;
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create table t (i int, j int) engine MergeTree order by i;
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insert into t values (1, 2);
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alter table t add projection x (select * order by j);
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insert into t values (1, 4);
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set allow_experimental_projection_optimization = 1, force_optimize_projection = 1;
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select i from t prewhere j = 4;
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SELECT j = 2, i FROM t PREWHERE j = 2;
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drop table t;
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