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14 lines
369 B
MySQL
14 lines
369 B
MySQL
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create database if not exists test;
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drop table if exists test.t;
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create table test.t (a Int32, b Int32) engine = MergeTree partition by (a,b) order by (a);
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insert into test.t values (1, 1);
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alter table test.t add column c Int32;
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select b from test.t prewhere a < 1000;
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select c from test.t where a < 1000;
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select c from test.t prewhere a < 1000;
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drop table test.t;
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