mirror of
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32 lines
875 B
MySQL
32 lines
875 B
MySQL
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DROP TABLE IF EXISTS test.test;
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DROP TABLE IF EXISTS test.mv_bad;
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DROP TABLE IF EXISTS test.mv_good;
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DROP TABLE IF EXISTS test.mv_group;
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CREATE TABLE test.test (x String) ENGINE = Null;
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create MATERIALIZED VIEW test.mv_bad (x String)
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ENGINE = MergeTree Partition by tuple() order by tuple()
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AS SELECT DISTINCT x FROM test.test;
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create MATERIALIZED VIEW test.mv_good (x String)
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ENGINE = MergeTree Partition by tuple() order by tuple()
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AS SELECT x FROM test.test;
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create MATERIALIZED VIEW test.mv_group (x String)
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ENGINE = MergeTree Partition by tuple() order by tuple()
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AS SELECT x FROM test.test group by x;
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insert into test.test values ('stest'), ('stest');
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select * from test.mv_bad;
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SELECT '---';
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select * from test.mv_good;
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SELECT '---';
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select * from test.mv_group;
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DROP TABLE test.mv_bad;
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DROP TABLE test.mv_good;
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DROP TABLE test.mv_group;
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DROP TABLE test.test;
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