RENAME Statement 

Renames one or more tables.

RENAME TABLE [db11.]name11 TO [db12.]name12, [db21.]name21 TO [db22.]name22, ... [ON CLUSTER cluster]

Renaming tables is a light operation. If you indicated another database after TO, the table will be moved to this database. However, the directories with databases must reside in the same file system (otherwise, an error is returned). If you rename multiple tables in one query, this is a non-atomic operation, it may be partially executed, queries in other sessions may receive the error Table ... doesn't exist ...

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