There was a problem opening the record set: Syntax error (missing operator) in query expression 'Artist.ArtistID ='. (SELECT Artist.ArtistID AS AID FROM Artist WHERE Artist.ArtistID = ) UNION (SELECT xxArtistArtist.ArtistID AS AID FROM xxArtistArtist WHERE xxArtistArtist.RelatedArtistID = AND xxArtistArtist.SameAs = True) UNION (SELECT xxArtistArtist.RelatedArtistID AS AID FROM xxArtistArtist WHERE xxArtistArtist.ArtistID = AND xxArtistArtist.SameAs = True)