By chance I discovered that the comment for the typedefs of "double"s does not cover Cardinality. Should we update that comment accordingly, maybe something like below?
- * Typedefs for identifying qualifier selectivities and plan costs as such. - * These are just plain "double"s, but declaring a variable as Selectivity - * or Cost makes the intent more obvious. + * Typedefs for identifying qualifier selectivities, plan costs and + * estimated rows or other count as such. These are just plain "double"s, + * but declaring a variable as Selectivity, Cost or Cardinality makes the + * intent more obvious. Thanks Richard
v1-0001-Add-comment-for-Cardinality-typedef.patch
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