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Archives of the TeradataForum
Message Posted: Wed, 07 Nov 2007 @ 19:35:36 GMT
| Subj: | | Re: Mload: Taking very long time to run |
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| From: | | Dieter Noeth |
Anomy.Anom wrote:
| | To change the PI I will have to convince that the same cannot be achieved by using secondary index or any other way. That's why I'd put
the whether it can be achieved by some other means. | |
| | Also, though the table is skewed I want to be sure that there is no way I can improve my mload script. | |
If the table is skewed there's a NUPI on it and there probably are lots of rows with the same PI-value. This might result in a huge CPU-
overhead for Duplicate Row Checks if the table is a SET table.
Replacing it with a MultiSet table will remove those Dup Checks.
Dieter
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