Couldn't you do something like:

select length(FieldName) from TableName where Condition=True

?

The result would be the size.  Otherwise, the only thing I can think of is
just doing a select to get the results you want, then just keep a running
tally on what would need to be transmitted, then do your packet math.

On Wed, Nov 3, 2010 at 6:24 PM, Scott A Mintz <sami...@ra.rockwell.com>wrote:

> Is it possible to construct a query that will tell me the total size in
> bytes of the result set?  Specifically, in a messaging protocol that
> returns data we need to fragment the reply and it would be nice to know
> how much data or how many packets will be required to send the response.
>
> Thanks,
> Scott
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