Are these defaults recorded somewhere that
mere mortals have access to?
Jared
On Thursday 07 June 2001 00:25, Mogens Nørgaard wrote:
> Any stat missing in a CBO situation will be set to the hard-coded default
> values found in the source code. One example (out of about 40 or so
> values) is default selectivity for equality predicates. Before 7.3 it was
> 0.125 (meaning that a where= condition would assume you needed to scan
> 1/8th of the table). In 7.3 and later it was fortunately set to 0.01 (1%).
> Another of my favorite default values is number of leaf blocks in an
> index. It's 25.
>
> Connor McDonald wrote:
> > Hi Jared,
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Author: Jared Still
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