Alias Error

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#713

From: Adalberto Baldini
Date: Tue, 31 Jul 2007 08:05

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I have this Query that works :

select a.desmov, a.CAU,
(select c.descr  from CODCAU c where codcau=a.cau and fblc = '0' and 
fdel = '0') as Descau
from GIOREG a

when I modify as follow I get error Column unknown Descau

select a.desmov, a.CAU,
(select c.descr  from CODCAU c where codcau=a.cau and fblc = '0' and 
fdel = '0') as Descau  ,
case descau
when '' then a.desmov
else Descau||'
'||a.desmov end as Descrreg
from GIOREG a

Thanks for help
Adalberto Baldini

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