Help Center/ Data Lake Insight/ Delta SQL Syntax Reference/ Delta SQL Syntax Reference/ Schema Evolution Syntax

Updated on 2025-01-09 GMT+08:00

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Schema Evolution Syntax

Function

This capability supports column alterations on Hudi tables with SparkSQL. Schema evolution must be enabled before using this capability.

Scope of Schema Evolution

The scope of schema evolution includes:

Column operations: Supports adding, deleting, modifying, and adjusting the position of columns (including nested columns).
Partition columns: Does not support schema evolution on partition columns.
Array type columns: Does not support adding, deleting, or altering nested columns of Array type.

Parent topic: Delta SQL Syntax Reference

Previous topic: OPTIMIZE

Next topic: ALTER COLUMN

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