Re: Query/400 Question

[John Cirocco <JCirocco@xxxxxxxxxx>]

Glenn and Chuck,

The folks here are pretty handy with SQL (which I am not) and they do a lot of 
Unions to solve a similar problem.  The difference is they do it in ONE sql 
statement.  It is kinda ugly to the non-SQL'ers but works like a champ.

Here is an example where they join 4 flavors of a data file where the date 
fields may have zero's and they force in a value at run time.  Hope this helps.

-- Both g4csdt and g4usd2 w/valid dates            
select                                             
       g4csdt,                                     
       g4usd2,                                     
       g5doco                                      
from QTEMP/f555056e,                               
     f5201                                         
where  g5doco  = g4doco                            
  and  g4csdt <> 0                                 
  and  g4usd2 <> 0                                 
union all                                          
-- g4csdt w/valid date and g4usd2 w/out valid date 
select                                             
       g4csdt,                                     
       10001,                                      
       g5doco                                      
from QTEMP/f555056e,                               
     f5201                                         
where  g5doco  = g4doco                            
  and  g4csdt <> 0                                 
  and  g4usd2  = 0                                
union all                                         
-- g4csdt w/out valid date and g4usd2 w/valid date
select                                            
       10001,                                     
       g4usd2,                                    
       g5doco                                     
from QTEMP/f555056e,                              
     f5201                                        
where  g5doco  = g4doco                           
  and  g4csdt  = 0                                
  and  g4usd2 <> 0                                
union all                                         
-- both g4csdt and g4usd2 w/out valid dates       
select                                            
       10001,                                     
       10001,                                     
       g5doco                                     
from QTEMP/f555056e,                              
     f5201                                        
where  g5doco  = g4doco                                                         
                     
  and  g4csdt  = 0     
  and  g4usd2  = 0     
order by 1             

>>> Glenn Gundermann <ggundermann@rachisholm.com> 05/19 8:41 AM >>>
Chuck,

I like Alex Moore's solution which I never thought of.  What I used to do was
split the query into two queries;  one selecting records where the denominator =
0 and calculate the result field = whatever and the 2nd query selecting records
where the denominator <> 0 and calculate the result field as you have already
specified.

Glenn Gundermann

                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                   
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