Count query with 3 coloumn iin SQL

Posted by asher baig on Stack Overflow See other posts from Stack Overflow or by asher baig
Published on 2012-11-05T16:58:36Z Indexed on 2012/11/05 16:59 UTC
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I have one database Library with table named called Medien. Having multiple columns named as Fname,Mname,Lname and ISBN.

I want to calculate database records with ISBN and without ISBN?

I have execute following command

Select COUNT(ISBN) as Verf1 FROM library.MEDIEN where verf1 = isbn;
Select COUNT(ISBN) as Verf2 FROM library.MEDIEN where verf2 = isbn;
Select COUNT(ISBN) as Verf3 FROM library.MEDIEN where verf3 = isbn;
Select COUNT(ISBN) as Ntverf1 FROM library.MEDIENwhere verf1 != isbn;
Select COUNT(ISBN) as Ntverf2 FROM library.MEDIENwhere verf2 != isbn;
Select COUNT(ISBN) as Ntverf3 FROM library.MEDIENwhere verf3 != isbn;

I am not sure i execute correct command or not. Because some ISBN records have Fname,Mname or Fname,Lname or Mname,Lname or Fname , Lname,Mname only respectively.

Please kindly help me solving this query

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