The SQLinDS package is based on Mike Rhoads' article Use the Full Power of SAS in Your Function-Style Macros.

The package allows to write SQL queries in the data step, e.g.

  data class;
    set %SQL(select * from sashelp.class order by age);
  run;

SHA256 digest for the latest version of SQLinDS: F*3BB422E8C94515DEE9E13E674A0D119794F464D9597C28D5D536E71F64EB5298

Documentation for SQLinDS

To work with a package use the SAS Packages Framework.