default_temporal_selectivity temporal_cachedop temporal_const_to_period temporal_joinsel temporal_sel temporal_sel_internal var_eq_const

var_eq_const() double var_eq_const ( VariableStatData *  vardata, Oid  operator, Datum  constval, bool  constisnull, bool  varonleft, bool  negate  ) Equal selectivity for var = const case. Note Function copied from selfuncs.c since it is not exported.