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How to compare 2 tables and copy fields

 
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chandracdac
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Joined: 15 Jun 2007
Posts: 37
Location: bangalore
PostPosted: Mon Aug 27, 2007 11:39 am    Post subject: How to compare 2 tables and copy fields
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Hai

I have a ssmall question. I have 2 tables which are identical. but in my second table some fields are empty .so i have to compare the two tables and
i have to copy the fields from 1st table to second one where ever the fields are empty .can u try? and pls tell me.
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PostPosted: Mon Aug 27, 2007 11:39 am    Post subject: Re: How to compare 2 tables and copy fields Reply with quote
saiprasadh

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Joined: 20 Sep 2006
Posts: 86
Location: India
PostPosted: Mon Aug 27, 2007 1:14 pm    Post subject:
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Hi Chandra,

Try this query

Code:
UPDATE Table1 A                   
SET A.Column1  = (SELECT B.Column1 FROM
Table B WHERE                     
A.PrimarykeyColumn =B. PrimarykeyColumn)                             
WHERE                                         
A.Column1 = ' ' 


Let me know if this works

Thanks
Sai
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