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Please let me know why this query is not working together. They are working separately:

(  (select item_name,
           sum(p_qty)
      from stock 
     where p_date between '08/06/2010' and '08/07/2010'
  group by item_name) -
(   select item_name, 
           sum(p_r_qty)
      from stock 
     where p_r_date between '08/06/2010' and '08/07/2010' 
  group by item_name))
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2
  • 2
    I'd like to help, but what are you trying to accomplish? Example data and expected output please. Commented Aug 8, 2010 at 4:46
  • what is that - you've got there? Are you trying to subtract the queries? Commented Aug 8, 2010 at 4:51

1 Answer 1

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4 
select item_name, 
           sum(p_qty) ,
           sum(p_r_qty)
      from stock  
     where p_date between '08/06/2010' and '08/07/2010' 
group by item_name

is this what you want ?

select item_name, 
           sum(p_qty)-sum(p_r_qty)
      from stock  
     where p_date between '08/06/2010' and '08/07/2010' 
group by item_name
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