anonymous_namespace{estimate_selectivity.cc}::KeySelectivityResult Struct Reference

Return type for EstimateSelectivityFromIndexStatistics(). More...

Public Attributes
double	selectivity
	The estimated selectivity (or -1.0 if there was no suitable index). More...
uint	prefix_length
	The length of the index prefix from which we derived the selectivity. More...

Detailed Description

Return type for EstimateSelectivityFromIndexStatistics().

Member Data Documentation

prefix_length

uint anonymous_namespace{estimate_selectivity.cc}::KeySelectivityResult::prefix_length

The length of the index prefix from which we derived the selectivity.

selectivity

double anonymous_namespace{estimate_selectivity.cc}::KeySelectivityResult::selectivity

The estimated selectivity (or -1.0 if there was no suitable index).

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The documentation for this struct was generated from the following file:

• sql/join_optimizer/estimate_selectivity.cc