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Message Posted: Thu, 19 Nov 2009 @ 11:02:41 GMT

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Subj:   Re: Index of a Derived Tables.
From:   Victor Sokovin

  Does Teradata create index for a derived table? if yes can we find the index column name/names and can we change it as per our requirement for better performance ?  

Derived table? It is an in-spool / in-memory object created by Teradata during query execution. It is internal and I don't think user can have any control over it. If you want a better performance consider a different derived table. Experiment!


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