The Art of SQL Server FILESTREAM - Red Gate Software

Chapter 3: Accessing FILESTREAM Data from Client Applications-- Create a VIEWCREATE VIEW ItemInfo ASSELECT ItemNumber, ItemImage FROM ItemsGO-- SELECT from the VIEWSELECTItemNumber,ItemImage.PathName()FROM ItemInfo/*-- OutputMsg 5539, Level 16, State 1, Line 3The ROWGUIDCOL column associated with the FILESTREAM being used is not visiblewhere method PathName is called.*/Listing 3-30:Using a view to show that the ROWGUIDCOL must be visible to the PathName() query.The ItemInfo view does not include the ROWGUIDCOL column, so a call to thePathName() on any of the columns will generate an error. To fix this problem, we mustinclude the ItemID column (which is marked as ROWGUIDCOL) in the view, as shown inListing 3-31.ALTER VIEW ItemInfo ASSELECTItemNumber,ItemImage,ItemID --This is needed for PathName()FROM ItemsListing 3-31:Adding the ROWGUIDCOL column to the view.Similarly, the query on the CTE in Listing 3-32 will fail because the ROWGUIDCOL is notvisible to the PathName() function.121