SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function divideDecimal (children 1)
     ExpressionList (children 2)
      Function toDecimal64 (children 1)
       ExpressionList (children 2)
        Literal Float64_123.123
        Literal UInt64_3
      Function toDecimal64 (children 1)
       ExpressionList (children 2)
        Literal UInt64_0
        Literal UInt64_1