mirror of
https://github.com/ClickHouse/ClickHouse.git
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85 lines
2.4 KiB
SQL
85 lines
2.4 KiB
SQL
DROP TABLE IF EXISTS test.alter;
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CREATE TABLE test.alter (d Date, k UInt64, i32 Int32) ENGINE=MergeTree(d, k, 8192);
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INSERT INTO test.alter VALUES ('2015-01-01', 10, 42);
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DESC TABLE test.alter;
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SHOW CREATE TABLE test.alter;
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SELECT * FROM test.alter ORDER BY k;
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ALTER TABLE test.alter ADD COLUMN dt DateTime;
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INSERT INTO test.alter VALUES ('2015-01-01', 9, 41, '1992-01-01 08:00:00');
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DESC TABLE test.alter;
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SHOW CREATE TABLE test.alter;
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SELECT * FROM test.alter ORDER BY k;
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ALTER TABLE test.alter ADD COLUMN n Nested(ui8 UInt8, s String);
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INSERT INTO test.alter VALUES ('2015-01-01', 8, 40, '2012-12-12 12:12:12', [1,2,3], ['12','13','14']);
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DESC TABLE test.alter;
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SHOW CREATE TABLE test.alter;
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SELECT * FROM test.alter ORDER BY k;
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ALTER TABLE test.alter ADD COLUMN `n.d` Array(Date);
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INSERT INTO test.alter VALUES ('2015-01-01', 7, 39, '2014-07-14 13:26:50', [10,20,30], ['120','130','140'],['2000-01-01','2000-01-01','2000-01-03']);
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DESC TABLE test.alter;
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SHOW CREATE TABLE test.alter;
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SELECT * FROM test.alter ORDER BY k;
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ALTER TABLE test.alter ADD COLUMN s String DEFAULT '0';
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INSERT INTO test.alter VALUES ('2015-01-01', 6,38,'2014-07-15 13:26:50',[10,20,30],['asd','qwe','qwe'],['2000-01-01','2000-01-01','2000-01-03'],'100500');
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DESC TABLE test.alter;
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SHOW CREATE TABLE test.alter;
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SELECT * FROM test.alter ORDER BY k;
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ALTER TABLE test.alter DROP COLUMN `n.d`, MODIFY COLUMN s Int64;
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DESC TABLE test.alter;
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SHOW CREATE TABLE test.alter;
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SELECT * FROM test.alter ORDER BY k;
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ALTER TABLE test.alter ADD COLUMN `n.d` Array(Date), MODIFY COLUMN s UInt32;
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DESC TABLE test.alter;
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SHOW CREATE TABLE test.alter;
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SELECT * FROM test.alter ORDER BY k;
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OPTIMIZE TABLE test.alter;
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SELECT * FROM test.alter ORDER BY k;
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ALTER TABLE test.alter DROP COLUMN n.ui8, DROP COLUMN n.d;
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DESC TABLE test.alter;
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SHOW CREATE TABLE test.alter;
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SELECT * FROM test.alter ORDER BY k;
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ALTER TABLE test.alter DROP COLUMN n.s;
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DESC TABLE test.alter;
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SHOW CREATE TABLE test.alter;
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SELECT * FROM test.alter ORDER BY k;
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ALTER TABLE test.alter ADD COLUMN n.s Array(String), ADD COLUMN n.d Array(Date);
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DESC TABLE test.alter;
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SHOW CREATE TABLE test.alter;
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SELECT * FROM test.alter ORDER BY k;
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ALTER TABLE test.alter DROP COLUMN n;
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DESC TABLE test.alter;
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SHOW CREATE TABLE test.alter;
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SELECT * FROM test.alter ORDER BY k;
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ALTER TABLE test.alter MODIFY COLUMN dt Date, MODIFY COLUMN s DateTime;
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DESC TABLE test.alter;
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SHOW CREATE TABLE test.alter;
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SELECT * FROM test.alter ORDER BY k;
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DROP TABLE test.alter;
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