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Message Posted: Fri, 16 Jul 2004 @ 20:55:18 GMT


     
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Subj:   Re: UPSERT Using Straight SQL
 
From:   Dieter Noeth

Chris Coffing wrote:

  I am trying to update / insert into a table from another table. Can I do this using an UPDATE (UPSERT FORM)???  


  So far I have not found a way to do this. It appears that the UPSERT form is looking for a parameter file to load from and does not support a derived table and an INSERT / SELECT.  



Ins/Sel can't be used with Upsert.

You'll have to wait until Teradata supports the full "Merge Into" syntax from SQL:1999 with sets of data. The current Upsert/Merge implementation only allows simple Inserts/Updates based on PI access.

You still have to use the traditional approach: "Update From" the existing rows and then "Insert/Select where not exists" the remaining rows...


Dieter



     
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