Question

I have table tblsale.
In this table i have field called BillType, which contains “s” and “r” (s = sale , r = returns )

The table has rougly 25 records. Of that, 7 records are “r”, and rest of the records are “s”.

How do I write the query so that my result set includes the following columns:

What is want exactly is below

Amount BillType Amount  BillType   Date
 100      s       50       r   29-11-2010
 120      s       20       r   28-11-2010
 130      s       30       r   27-11-2010
 140      s       50       r   26-11-2010

Answer 1

What you appear to want are the results of two queries, sales and returns, side by side. It can be done with a kludge like this:

       select amount, sale, returnamount, returned, returndate
       from
       (
       select amount, 1 as sale, 0 as returnamount, 0 as returned, '' as returndate
       from sales where billtype='s'
       union
       select 0 as amount, 0 as sale, amount as returnamount, 1 as returned, date as returndate
       from sales where billtype ='r'
       ) 

You may have to cast date into a string representation. The unioned sets need the same column structure, so you create dummy columns. (You didn’t ask for a sale date for sales.)

Or you can do this with CASE WHEN statement.