v.20.1Improvement

Add Checks for External Dictionaries from DDL Queries

Add additional checks for external dictionaries created from DDL-queries. #8127 (alesapin)
Added additional validation checks for external dictionaries created via DDL queries.

Why it matters

To improve the reliability and correctness of external dictionaries defined using DDL by ensuring they pass more comprehensive validations, preventing misconfigurations and runtime errors.

How to use it

When creating external dictionaries using DDL queries, the system will automatically apply the new validation checks without requiring any additional user actions.