code: protected VoltTable runDML(String dml, boolean transformDml) {
          String modifiedDml = (transformDml ? transformDML(dml) : dml);
          printTransformedSql(dml, modifiedDml);
          return super.runDML(modifiedDml);
      }
docs: Optionally, modifies queries in such a way that PostgreSQL results will
  match VoltDB results; and then passes the remaining work to the base
  class version.