public ExprNodeDesc genExprNodeDesc(ASTNode expr, RowResolver input)
      throws SemanticException {
    // Since the user didn't supply a customized type-checking context,
    // use default settings.
    return genExprNodeDesc(expr, input, true, false);
  }
Generates an expression node descriptor for the expression with TypeCheckCtx.
ql/src/java/org/apache/hadoop/hive/ql/parse/SemanticAnalyzer.java