need to add col from third table of join

i need to add a col from the third table I need ad.IARCC9                                      

it's not displaying this col. i

select ItQty#,IhDocd,ItPRT# from pklib.Fileout1 a      
ad.IARCC9 from astdta.audia                            
b.CtCom#= a.ItCom# and                                  
b.CtCtr# = ' '     and                                  
b.CtPrt# =a.ItPrt#                                      
join astdta.Audia ad                                    
on ad.IAprt# = a.ItPrt#                                
where ad.IARCC9 > ''                                    
order by ad.IARCC9
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Éric MoreauSenior .Net ConsultantCommented:
you have 2 FROM clause and you don't have the definition for alias B

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Philky101Author Commented:
can you explain me\ this further. This is getting me output needed. But need the third\ table col on the output.
Éric MoreauSenior .Net ConsultantCommented:
Can You show your working query with 2 tables and the structure of the 3rd table?
The query is unclear, but try this
select ItQty#,IhDocd,ItPRT#, b.IARCC9 from pklib.Fileout1 a
astdta.audia b, third_table c 
 where c.CtCom#= a.ItCom#
and c.CtCtr# = ' '
and c.CtPrt# =a.ItPrt#
and b.IAprt# = a.ItPrt#                                
and b.IARCC9 > ''
order by b.IARCC9 

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Anthony PerkinsCommented:
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