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Amazon Redshift adds ALTER TABLE for Iceberg tables and writes via the AWS Glue Data Catalog mount

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This article announces new capabilities for Amazon Redshift to support Apache Iceberg tables, including direct writes via AWS Glue Data Catalog and ALTER TABLE DDL statements.

  • Write directly to Iceberg tables through auto-mounted awsdatacatalog without external schemas
  • ALTER TABLE operations: ADD/DROP/ALTER columns, RENAME COLUMN, modify properties
  • Adjust partitioning strategies with ADD/DROP/REPLACE PARTITION FIELD
  • Modified tables remain compatible with EMR, Athena, and other Iceberg engines
  • AWS Lake Formation permissions supported for Iceberg write operations
  • Available in all AWS Regions where Redshift operates

These features simplify data lake workflows by enabling schema modifications without table deletion, improving pipeline efficiency and cross-engine interoperability.

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