Vineet Garg created HIVE-18598:
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Summary: Disallow constraints with EXTERNAL table
Key: HIVE-18598
URL: https://issues.apache.org/jira/browse/HIVE-18598
Project: Hive
Issue Type: Task
Components: SQL
Reporter: Vineet Garg
Assignee: Vineet Garg
Attachments: HIVE-18598.1.patch
Since Hive do not manage the data for external tables and can not enforce
constraints it doesn't make sense to allow constraints like PRIMARY KEY, NOT
NULL etc for such tables.
User can still specify RELY to signal optimizer for constraint related
optimizations.
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