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Applies to: 
SQL Server 2019 (15.x) and later versions
Azure SQL Managed Instance
This catalog view provides a list of the external languages in the database. R and Python are reserved names and no external language can be created with those specific names.
sys.external_languages
The catalog view sys.external_languages lists a row for each external language in the database.
| Column name | Data type | Description |
|---|---|---|
| external_language_id | int | ID of the external language |
| language | sysname | Name of the external language. Is unique within the database. R and Python are reserved names per instance |
| create_date | datetime2 | Date and time of creation |
| principal_id | int | ID of the principal that owns this external library |