SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 3)
    Function toDecimal32 (alias x) (children 1)
     ExpressionList (children 2)
      Literal UInt64_0
      Literal UInt64_4
    Function multiIf (children 1)
     ExpressionList (children 3)
      Function equals (children 1)
       ExpressionList (children 2)
        Identifier x
        Literal UInt64_0
      Literal NULL
      Function intDivOrZero (children 1)
       ExpressionList (children 2)
        Literal UInt64_1
        Identifier x
    Function multiIf (children 1)
     ExpressionList (children 3)
      Function equals (children 1)
       ExpressionList (children 2)
        Identifier x
        Literal UInt64_0
      Literal NULL
      Function intDivOrZero (children 1)
       ExpressionList (children 2)
        Identifier x
        Literal UInt64_0