code: @Override
      public void runDDL(String ddl) {
          String modifiedDdl = transformDDL(ddl);
          printTransformedSql(ddl, modifiedDdl);
          super.runDDL(modifiedDdl, false);
      }
docs: Modifies DDL statements in such a way that PostGIS results will match
  VoltDB results, and then passes the remaining work to the base class
  version.