SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function plus (children 1)
     ExpressionList (children 2)
      Literal Float64_1.5
      Function CAST (children 1)
       ExpressionList (children 2)
        Literal \'1.5\'
        Literal \'Decimal32(5)\'
