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From Cdy Chen <dongyong.c...@gmail.com>
Subject How to CONCAT 18 columns
Date Tue, 17 Jul 2012 13:26:09 GMT
Hi all,

select
CONCAT(product,test_date,test_type,context_id,fid,eval,capacity,no_of_platters,ast_rev,tester,line_id,floor_id,hstack_part_number,dcm_head,dcm_media,dcm_preamp,dcm_prime_rwrk,be_eval)

from raw_data;

It returns NULL.

Why?
And how to CONCAT so many columns?

Looking forward your suggestion!
Thank you!

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