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Posted by Erland Sommarskog on 06/23/06 21:17
Andrix (elkpichico@gmail.com) writes:
> I have a table with 20.000.000 of tuples.
> I have been monitoring the performance of the insertion and updates,
> but not convince me at all.
> The table have 30 columns, what and 12 of it, are calcultated column.
>
> The test that i do was this:
>
> 1 Insertion with all the columns and calculing the calcultated columns
> in the insertion sentence.
>
> 1 insertion and all the columns calculated in @vars..
>
> 1 insertion with the basic fields, and 10 updates.
>
> And the result was that the last test was the most performant.
>
> What is your opinion?
That your posting is not very clear. I would take "calculated columns"
to mean "computed columns", but since you can't insert explicit values
in computed columns that does not really fit.
Why not post the code you used, so it's easier to understand what you
are talking about.
--
Erland Sommarskog, SQL Server MVP, esquel@sommarskog.se
Books Online for SQL Server 2005 at
http://www.microsoft.com/technet/prodtechnol/sql/2005/downloads/books.mspx
Books Online for SQL Server 2000 at
http://www.microsoft.com/sql/prodinfo/previousversions/books.mspx
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