How do I add values from two seperate querys in SQL

Posted by fishhead on Stack Overflow See other posts from Stack Overflow or by fishhead
Published on 2010-04-11T19:23:24Z Indexed on 2010/04/11 19:33 UTC
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Below is my attempt at addinf two values from seperate select statments...it's not working...I can't see why. Looking for some direction thanks

select (v1.Value + v2.Value) as total from
 ( 

 (Select   Max(Value) as [Value]  from History WHERE 
  Datetime>='Apr 11 2010  6:05AM'      and Datetime<='Apr 11 2010  6:05PM' 
  and Tagname ='RWQ272017DTD' ) as v1




 (Select   Max(Value) as [Value]  from History WHERE 
  Datetime>='Apr 11 2010  6:05AM'      and Datetime<='Apr 11 2010  6:05PM' 
  and Tagname ='RU282001DTD' ) as v2
)  

boy do I feel foolish...I asked the same question a few days ago...now I can't delete this.

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