SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 3)
    Function materialize (alias x) (children 1)
     ExpressionList (children 1)
      Function toDecimal32 (children 1)
       ExpressionList (children 2)
        Literal \'0.4242\'
        Literal UInt64_4
    Literal Float64_0.4242 (alias y)
    Function round (children 1)
     ExpressionList (children 2)
      Function hypot (children 1)
       ExpressionList (children 2)
        Identifier x
        Identifier y
      Literal UInt64_6
