SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 4)
    Function isDecimalOverflow (children 1)
     ExpressionList (children 2)
      Function toDecimal64 (children 1)
       ExpressionList (children 2)
        Literal UInt64_999999999999999999
        Literal UInt64_0
      Literal UInt64_18
    Function isDecimalOverflow (children 1)
     ExpressionList (children 1)
      Function toDecimal64 (children 1)
       ExpressionList (children 2)
        Literal UInt64_999999999999999999
        Literal UInt64_0
    Function isDecimalOverflow (children 1)
     ExpressionList (children 2)
      Function toDecimal64 (children 1)
       ExpressionList (children 2)
        Literal Int64_-999999999999999999
        Literal UInt64_0
      Literal UInt64_18
    Function isDecimalOverflow (children 1)
     ExpressionList (children 1)
      Function toDecimal64 (children 1)
       ExpressionList (children 2)
        Literal Int64_-999999999999999999
        Literal UInt64_0