On 19.12.23 07:23, Richard Guo wrote: > 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.
