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Delimiter in the sql query

 
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ashok_uddaraju

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Joined: 21 Feb 2007
Posts: 72
Location: bangalore

PostPosted: Thu May 20, 2010 11:49 am    Post subject: Delimiter in the sql query
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Hi,

I have a query which is like

Select name||char(';'),panno||(';'),country||(';"),sum
from data.

When i run this query i see that whenever the panno is present the data is delimited by ';' which is as expected.
But when the panno is not present the delimiter is appearing after country as the value of panno is blank.

Can you please assit me in getting the delimiter evm when the value is blank?
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dbzTHEdinosauer

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Joined: 20 Oct 2006
Posts: 6967
Location: porcelain throne

PostPosted: Thu May 20, 2010 12:18 pm    Post subject:
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Stop concatenating them.

Code:

Select name
     , ';'
     , panno
     , ';'
     , country
     , ';'       
     , sum
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Ronald Burr

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Joined: 22 Oct 2009
Posts: 293
Location: U.S.A.

PostPosted: Thu May 20, 2010 5:00 pm    Post subject:
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If memory serves me correctly, without explicitly casting literals as type CHAR, they will be treated as though they were of type VARCHAR, and so will be prefixed with a binary length field when written to the output record.
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GuyC

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Joined: 11 Aug 2009
Posts: 1281
Location: Belgium

PostPosted: Fri May 21, 2010 6:04 pm    Post subject:
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it probably isn't blank but null.

null || 'blabla' is null.
'' || 'blabla' is 'blabla'

you could not concatenate them like dbz said
or use coalesce() to return '' when equal to null.

or just use the unload delimited utility
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