Flex SQLite显示SUM（）结果

Question

I try to display the Total sum() from a sqlStmt but all i got is [object, object], any idea how?

Thanks

private function displayAmountHeading():void  {
        sqlStmt = new SQLStatement();
        sqlStmt.sqlConnection = sqlConn;
        sqlStmt.text = "SELECT SUM(Amount) FROM MainTable";
        sqlStmt.execute();
        var result:Array = sqlStmt.getResult().data;
        if (result != null) trace(result);
      }

//return [object, object]

Answer 1

You're attempting to trace an array. If you want to see the first value in that array, try

SELECT SUM(Amount) as sum FROM MainTable

trace(result[0].sum);

Answer 2

The object,object is the string representation of the object, without a toString() method. Use trace(ObjectUtil.toString(result)); If your new to the flex sqlStatement you should also read this and this for more information about the return type of the sqlStatement and how to access properties of the result object, when using aggregate functions such as SUM , where u should use aliases, such as SUM(Amount) as sumAmount to later access the property, like resultObject["sumAmount"] or resultObject.sumAmount