v.20.4New Feature

Add ALTER TABLE RENAME COLUMN for MergeTree Table Engines

Official CH changelog text
Add ALTER TABLE ... RENAME COLUMN for MergeTree table engines family. #9948 (alesapin)
Add support for ALTER TABLE ... RENAME COLUMN statement in the MergeTree table engines family.

Why it matters

This feature allows users to rename columns in tables using MergeTree family engines without needing to recreate or migrate data manually, simplifying schema evolution and maintenance.

How to use it

Use the ALTER TABLE <table_name> RENAME COLUMN <old_name> TO <new_name> syntax to rename a column in a MergeTree table.

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