SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 2)
    Function CAST (alias v) (children 1)
     ExpressionList (children 2)
      Literal \'42\'
      Literal \'Variant(Date)\'
    Function variantType (children 1)
     ExpressionList (children 1)
      Identifier v
