FILE_ID (Transact-SQL)
Returns the file identification (ID) number for the given logical file name in the current database.
Important
This feature will be removed in a future version of Microsoft SQL Server. Avoid using this feature in new development work, and plan to modify applications that currently use this feature. Use FILE_IDEX instead.
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Transact-SQL Syntax Conventions
Syntax
FILE_ID ( file_name )
Arguments
- file_name
Is an expression of type sysname that represents the name of the file for which to return the file ID.
Return Types
smallint
Remarks
file_name corresponds to the logical file name displayed in the name column in the sys.master_files or sys.database_files catalog views.
In SQL Server 2005, the file identification number assigned to full-text catalogs is greater than 32767. Because the return type of the FILE_ID function is smallint, this function cannot be used for full-text files. Use FILE_IDEX instead.
Examples
The following example returns the file ID for the AdventureWorks_Data file.
USE AdventureWorks;
GO
SELECT FILE_ID('AdventureWorks_Data')AS 'File ID';
GO
Here is the result set.
File ID
-------
1
(1 row(s) affected)
See Also
Reference
FILE_NAME (Transact-SQL)
Metadata Functions (Transact-SQL)
sys.database_files (Transact-SQL)
sys.master_files (Transact-SQL)
Other Resources
Deprecated Database Engine Features in SQL Server 2005