SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 3)
    Literal Float64_0.4242 (alias x)
    Function toDecimal32 (alias y) (children 1)
     ExpressionList (children 2)
      Literal \'0.24\'
      Literal UInt64_2
    Function round (children 1)
     ExpressionList (children 2)
      Function atan2 (children 1)
       ExpressionList (children 2)
        Identifier y
        Identifier x
      Literal UInt64_6
