User-defined functions that return a table data type can be powerful alternatives to views. These functions are referred to as table-valued functions. A table-valued user-defined function can be used where table or view expressions are allowed in Transact-SQL queries.
1 Go to the iTunes folder that contains the iTunes library files 2  : Windows: Navigate to \Users\ username \Music\iTunes\. 3  Drag the iTunes Library.itl file to your Desktop. 4  In the iTunes folder, open the Previous iTunes Libraries folder. Windows: Navigate to \Users\ username \Music\iTunes\. 2  Drag the iTunes Library.itl file to your Desktop. 3  In the iTunes folder, open the Previous iTunes Libraries folder. 4  Find the file named iTunes Library YYYY-MM-DD where YYYY-MM-DD is the date you updated iTunes (Year-Month-Day).
2. Open the File menu and select Add to Library. . 3. Select the file or folder you want to add. 1  If the Copy files to the iTunes Music folder when adding to library option is selected, iTunes will automatically place newly added audio files in both the iTunes library and the iTunes Music folder.. Open the File menu and select Add to Library. . 3. Select the file or folder you want to add. 1  If the Copy files to the iTunes Music folder when adding to library option is selected, iTunes will automatically place newly added audio files in both the iTunes library and the iTunes Music folder.