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10 lines
274 B
SQL
10 lines
274 B
SQL
drop table if exists t;
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create table t (id UInt32, a Int) engine = MergeTree order by id;
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insert into t values (1, 0) (2, 1) (3, 0) (4, 0) (5, 0);
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alter table t add column s String default 'foo';
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select s from t prewhere a = 1 where rand() % 2 = 0 limit 1;
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drop table t; |