pgrx_pg_sys

Function mcv_selectivity

Source 
pub unsafe fn mcv_selectivity(
    arg_vardata: *mut VariableStatData,
    arg_opproc: *mut FmgrInfo,
    arg_collation: Oid,
    arg_constval: Datum,
    arg_varonleft: bool,
    arg_sumcommonp: *mut f64,
) -> f64