SQL SERVER to determine whether the file exists

      Sometimes we need to judge whether some physical files exist, and then do some processing, such as importing a txt file regularly for a job, we need to judge whether the file exists in advance, and then do the import operation, we can use xp_fileexist to judge, the new method is as follows :

CREATE FUNCTION fun_ExistFile ( @filePath VARCHAR(800) )
RETURNS INT
AS
    BEGIN
 
        DECLARE @result INT --Return value 1 means yes 0 means no
 
        EXEC MASTER.dbo.xp_fileexist @filePath, @result OUT 
        RETURN @result
    END   

      The test is as follows:

SELECT dbo.fun_ExistFile('c:\data.txt')

      result:

      Test for the absence of:

SELECT dbo.fun_ExistFile('c:\aaaaa.txt')

      result:

      We can use this method to determine whether the file exists and do subsequent processing.