SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 4)
    Function toDecimal64 (alias x) (children 1)
     ExpressionList (children 2)
      Literal Float64_123456789.12345679
      Literal UInt64_9
    Function countEqual (children 1)
     ExpressionList (children 2)
      Function array (children 1)
       ExpressionList (children 3)
        Function plus (children 1)
         ExpressionList (children 2)
          Identifier x
          Literal UInt64_1
        Identifier x
        Identifier x
      Identifier x
    Function countEqual (children 1)
     ExpressionList (children 2)
      Function array (children 1)
       ExpressionList (children 3)
        Identifier x
        Function minus (children 1)
         ExpressionList (children 2)
          Identifier x
          Literal UInt64_1
        Identifier x
      Identifier x
    Function countEqual (children 1)
     ExpressionList (children 2)
      Function array (children 1)
       ExpressionList (children 2)
        Identifier x
        Identifier x
      Function minus (children 1)
       ExpressionList (children 2)
        Identifier x
        Literal UInt64_0
