BTREE_AM_OID DEFAULT_TEMP_SELECTIVITY scalarineqsel 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.