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Concatenate Aliased Columns

Posted on 2010-11-18
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Last Modified: 2012-05-10
What's the best way to concatenate aliased columns, a quick example;

Select empFN as "First Name" ||','|| empLN as "Last Name" ||','|| JobID as "Job Class" ||','|| xxxxx
From Emp
Where .....etc..

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Question by:Roberto Madro R.
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Expert Comment

by:sdstuber
ID: 34167616
Don't concatenate the alias

empFN  ||','|| empLN ||','|| JobID  ||','|| xxxxx  as "Some New Name"
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Expert Comment

by:mpaladugu
ID: 34167884
if there are only 2 columns to con cat, you can also use concat(col1, col2) function in oracle. But this is limited to concatenating only 2 columns.  easiest is what said above.

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Expert Comment

by:sdstuber
ID: 34167909
even if you use concat,  you still don't concatenate the aliases, you concatenate the columns.

the only thing aliased is the resulting string.
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Assisted Solution

by:sdstuber
sdstuber earned 1000 total points
ID: 34167928
alternately,  if you already have aliased results.

you can wrap your query in an inline view and then concatenate the columns from that view, which will be the aliases.

select "First Name" || ',' || "Last Name" || ',' || "Job Class" || ',' ||  xxxxx
from
(select empFN as "First Name" , empLN as "Last Name" ,  JobID as "Job Class" ,  xxxxx
from.....
)
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Expert Comment

by:sdstuber
ID: 34167942
Note the double quotes.

If your aliases are not normal legal identifiers you need to double quote them any place they are propogated
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Accepted Solution

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Roberto Madro R. earned 0 total points
ID: 34168216
your feedback seems to spur another idea that worked, thank you sdstuber.
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Expert Comment

by:sdstuber
ID: 34168246
glad I could help,  

your questions will close immeidately if you don't accept your own post as an answer.
Since http:#34168216  isn't really an answer, it doesn't make sense to accept it anyway.

You should only accept your own answer if you have added something beyond what is in the other posts.
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Author Comment

by:Roberto Madro R.
ID: 34168252
Thx
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Author Closing Comment

by:Roberto Madro R.
ID: 34195076
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