Unordered cursor compare with NULLS value fails

[lwasylow]

Unordered with nulls fails due to using a direct compare of values it should use a :

function generate_equal_sql(a_col_name in varchar2) return varchar2 is
  begin
    return ' decode(a.'||a_col_name||','||' e.'||a_col_name||',1,0) = 1 ';
  end;

[lwasylow]

Fixed as part of Random Seed PR