Improve company productivity with a Business Account.Sign Up

x
?
Solved

int overflow

Posted on 2001-08-23
2
Medium Priority
?
704 Views
Last Modified: 2012-06-27
Hi folks,

i have a proxy server logging to MMSSQL table.  i want to summarise the traffic each day to total per IP address.  i use this stored proc:

CREATE PROCEDURE update_TrafficLog @day int = 0

AS

insert into TrafficLog
select clientIP, convert(smalldatetime,convert(char, logtime,101),101), sum(bytessent) as bytesDelivered, 'proxy', 'proxy', newid()
from mspSrvLog
where logtime < convert(smalldatetime,convert(char, dateadd(d, -@day, getdate()),101),101) and logtime >= convert(smalldatetime,convert(char, dateadd(d, -1-@day, getdate()),101),101)
group by clientIP, convert(smalldatetime,convert(char, logtime,101),101)

delete mspsrvlog where logtime < convert(smalldatetime,convert(char, dateadd(d, -1-@day, getdate()),101),101)
GO

the column 'bytessent' is type int

the destimation column for sum(bytessent) is type bigint.

but sometimes this happens when i run the storedproc above:

Server: Msg 8115, Level 16, State 2, Procedure update_TrafficLog, Line 5
Arithmetic overflow error converting expression to data type int.
The statement has been terminated.

(0 row(s) affected)

- i assume that this is caused by the statement sum(bytessent) evaluating to a value greater than max INT - which being 2,147,483,647 is only 2.15GB, and not unlikely that this much data would be delivered to one address in a given day....

so how can i evaluate the sum(bytessent) as bigint?

cheers!


0
Comment
Question by:meverest
2 Comments
 
LVL 39

Accepted Solution

by:
appari earned 300 total points
ID: 6420633
try the following

insert into TrafficLog
select clientIP, convert(smalldatetime,convert(char, logtime,101),101), sum( convert(numeric,bytessent)) as bytesDelivered,
'proxy', 'proxy', newid()
from mspSrvLog
where logtime < convert(smalldatetime,convert(char, dateadd(d, -@day, getdate()),101),101) and logtime
>= convert(smalldatetime,convert(char, dateadd(d, -1-@day, getdate()),101),101)
group by clientIP, convert(smalldatetime,convert(char, logtime,101),101)

delete mspsrvlog where logtime < convert(smalldatetime,convert(char, dateadd(d, -1-@day, getdate()),101),101)
0
 
LVL 37

Author Comment

by:meverest
ID: 6420815
thanks for that.  the convert function did the trick - but i chose to convert to bigint....  is there some advantage for using numeric datatype?

regards.
0

Featured Post

Free Tool: Site Down Detector

Helpful to verify reports of your own downtime, or to double check a downed website you are trying to access.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

This month, Experts Exchange sat down with resident SQL expert, Jim Horn, for an in-depth look into the makings of a successful career in SQL.
In this article, we will see two different methods to recover deleted data. The first option will be using the transaction log to identify the operation and restore it in a specified section of the transaction log. The second option is simpler and c…
Via a live example, show how to extract insert data into a SQL Server database table using the Import/Export option and Bulk Insert.
Using examples as well as descriptions, and references to Books Online, show the documentation available for datatypes, explain the available data types and show how data can be passed into and out of variables.

588 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question