private PTFDesc translatePTFInvocationSpec(PTFInvocationSpec ptfQSpec, RowResolver inputRR)
      throws SemanticException {
    PTFTranslator translator = new PTFTranslator();
    return translator.translate(ptfQSpec, this, conf, inputRR, unparseTranslator);
  }
It will check if this is analyze ... compute statistics noscan
@param tree
ql/src/java/org/apache/hadoop/hive/ql/parse/SemanticAnalyzer.java