How to Rename a Column in ClickHouse

To rename a column in ClickHouse, use the ALTER TABLE statement in combination with RENAME COLUMN.

This example renames the column my_column to my_renamed_column:

ALTER TABLE my_table RENAME COLUMN my_column TO my_renamed_column;

Include the IF EXISTS clause if you don’t want the query to return an error in case my_colum doesn’t exist:

ALTER TABLE my_table RENAME COLUMN IF EXISTS my_column TO my_renamed_column;