am Mon, dem 02.06.2008, um 9:57:17 -0400 mailte Tom Lane folgendes:
> "A. Kretschmer" <andreas.kretschmer@schollglas.com> writes:
> > i expected for a 1000 row test-table a cost per function of 2.5
> > (cpu_operator_cost = 0.0025), but i got 5.
>
> What's the data type of "i"? I suspect you really have two function
> calls in that expression: a type coercion function and cos() itself.
Tom, many thanks for the enlightenment, you are right. Data typ of "i"
was int, if i use real than i got the expected costs. Great ;-)
Thanks, Andreas
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Andreas Kretschmer
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