Add and drop hybrid table constraints online (General availability)

GASep 8, 2026VerifiedAdded Sep 22, 2026

With this release, you can add and drop UNIQUE and FOREIGN KEY constraints on an existing hybrid table by using alter table . Previously, you had to define these constraints when you created the table, so adding a foreign key to a table that was already serving a workload meant recreating and reloading the table.

Read Snowflake's release notes

https://docs.snowflake.com/en/release-notes/2026/other/2026-09-08-hybrid-tables-online-constraints-ga

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