mirror of
https://github.com/ClickHouse/ClickHouse.git
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40 lines
1.3 KiB
MySQL
40 lines
1.3 KiB
MySQL
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DROP TABLE IF EXISTS tmp;
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SET mutations_sync = 2;
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CREATE TABLE tmp (x Int64) ENGINE = MergeTree() ORDER BY tuple() PARTITION BY tuple();
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INSERT INTO tmp SELECT * FROM system.numbers LIMIT 20;
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ALTER TABLE tmp ADD COLUMN s String DEFAULT toString(x);
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SELECT groupArray(x), groupArray(s) FROM tmp;
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ALTER TABLE tmp MODIFY COLUMN s String DEFAULT toString(x+1);
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SELECT groupArray(x), groupArray(s) FROM tmp;
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ALTER TABLE tmp MATERIALIZE COLUMN s;
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ALTER TABLE tmp MODIFY COLUMN s String DEFAULT toString(x+2);
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SELECT groupArray(x), groupArray(s) FROM tmp;
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ALTER TABLE tmp MATERIALIZE COLUMN s;
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ALTER TABLE tmp MODIFY COLUMN s String DEFAULT toString(x+3);
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SELECT groupArray(x), groupArray(s) FROM tmp;
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ALTER TABLE tmp DROP COLUMN s;
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ALTER TABLE tmp ADD COLUMN s String MATERIALIZED toString(x);
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SELECT groupArray(x), groupArray(s) FROM tmp;
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ALTER TABLE tmp MODIFY COLUMN s String MATERIALIZED toString(x+1);
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SELECT groupArray(x), groupArray(s) FROM tmp;
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ALTER TABLE tmp MATERIALIZE COLUMN s;
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ALTER TABLE tmp MODIFY COLUMN s String MATERIALIZED toString(x+2);
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SELECT groupArray(x), groupArray(s) FROM tmp;
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ALTER TABLE tmp MATERIALIZE COLUMN s;
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ALTER TABLE tmp MODIFY COLUMN s String MATERIALIZED toString(x+3);
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SELECT groupArray(x), groupArray(s) FROM tmp;
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ALTER TABLE tmp DROP COLUMN s;
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DROP TABLE tmp;
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