sys.external_language_files (Transact-SQL)
Applies to: 
SQL Server 2019 (15.x)
Azure SQL Managed Instance
This catalog view provides a list of the external language extension files in the database. R and Python are reserved names and no external language can be created with those specific names.
When an external language is created from a file_spec, the extension itself and its properties are listed in this view. This view will contain one entry per language, per OS.
sys.external_language_files
The catalog view sys.external_language_files lists a row for each external language extension in the database. Parameters
| Column name | Data type | Description |
|---|---|---|
| external_language_id | int | ID of the external language |
| content | varbinary(max) | Content of the external language extension file |
| file_name | sysname | Name of the language extension file |
| platform | tinyint | ID of the host platform on which SQL Server is installed |
| platform_desc | nvarchar(60) | Name of the host platform. Valid values are WINDOWS, LINUX. |
| parameters | sysname | External language parameters |
| environment_variables | sysname | External language environment variables |