FILE_NAME (Transact-SQL)

Applies to: SQL Server Azure SQL Managed Instance

This function returns the logical file name for a given file identification (ID) number, in the context of the current database.

Transact-SQL syntax conventions

FILE_NAME ( file_id )   

file_id
The file identification number whose file name FILE_NAME will return. file_id has an int data type.

nvarchar(128)

file_ID corresponds to the file_id column in the sys.master_files catalog view or the sys.database_files catalog view.

This example returns the file names for file_ID 1 and file_ID in the AdventureWorks2022 database.

SELECT FILE_NAME(1) AS 'File Name 1', FILE_NAME(2) AS 'File Name 2';  
GO  

Here's the result set.

File Name 1                File Name 2  
-------------------------  ------------------------  
AdventureWorks2022_Data    AdventureWorks2022_Log  

(1 row(s) affected)

FILE_IDEX (Transact-SQL)
Metadata Functions (Transact-SQL)
sys.database_files (Transact-SQL)
sys.master_files (Transact-SQL)