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38 lines
1012 B
SQL
38 lines
1012 B
SQL
DROP TABLE IF EXISTS table_for_rename_replicated;
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CREATE TABLE table_for_rename_replicated
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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 = ReplicatedMergeTree('/clickhouse/tables/table_for_rename_replicated', '1')
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PARTITION BY date
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ORDER BY key;
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INSERT INTO table_for_rename_replicated 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_replicated WHERE key = 1;
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SYSTEM STOP MERGES;
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SHOW CREATE TABLE table_for_rename_replicated;
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ALTER TABLE table_for_rename_replicated RENAME COLUMN value1 to renamed_value1 SETTINGS replication_alter_partitions_sync = 0;
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SELECT sleep(2) FORMAT Null;
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SHOW CREATE TABLE table_for_rename_replicated;
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SELECT renamed_value1 FROM table_for_rename_replicated WHERE key = 1;
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SELECT * FROM table_for_rename_replicated WHERE key = 1 FORMAT TSVWithNames;
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SYSTEM START MERGES;
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DROP TABLE IF EXISTS table_for_rename_replicated;
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