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36 lines
1.2 KiB
SQL
36 lines
1.2 KiB
SQL
DROP TABLE IF EXISTS table_for_rename;
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CREATE TABLE table_for_rename
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(
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date Date,
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key UInt64,
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value1 String,
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value2 String,
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value3 String
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)
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ENGINE = MergeTree()
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PARTITION BY date
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ORDER BY key;
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INSERT INTO table_for_rename SELECT toDate('2019-10-01') + number % 3, number, toString(number), toString(number), toString(number) from numbers(9);
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SELECT value1 FROM table_for_rename WHERE key = 1;
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ALTER TABLE table_for_rename RENAME COLUMN value1 to renamed_value1;
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SELECT renamed_value1 FROM table_for_rename WHERE key = 1;
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SELECT * FROM table_for_rename WHERE key = 1 FORMAT TSVWithNames;
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ALTER TABLE table_for_rename RENAME COLUMN value3 to value2; --{serverError 15}
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ALTER TABLE table_for_rename RENAME COLUMN value3 TO r1, RENAME COLUMN value3 TO r2; --{serverError 36}
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ALTER TABLE table_for_rename RENAME COLUMN value3 TO r1, RENAME COLUMN r1 TO value1; --{serverError 10}
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ALTER TABLE table_for_rename RENAME COLUMN value2 TO renamed_value2, RENAME COLUMN value3 TO renamed_value3;
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SELECT renamed_value2, renamed_value3 FROM table_for_rename WHERE key = 7;
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SELECT * FROM table_for_rename WHERE key = 7 FORMAT TSVWithNames;
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DROP TABLE IF EXISTS table_for_rename;
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