Is my query the very last bit of sql sent through cfquery?

Question

I have Coldfusion 9 on a Windows Server 2008 box. I have a datasource that points to a Windows Server 2000 with SQL Server 2000. My goal with this template was to determine if my SQL server was recieving any traffic. We anticipate that one or two databases may have select statements being run against it. So, we figured we could use this template to produce proof of activity. (if a process's last query is different from the last one we logged, then that confirms that our sql server is still recieving activity)
<cfquery name="processes" datasource=#dsn#>
    USE master
    SELECT * from sysprocesses where spid > 50
</cfquery>
<cfloop query="processes">
    <cfquery name="lastquery" datasource=#dsn#>
        DBCC INPUTBUFFER(#duckprocesses.spid#)
    </cfquery>
You can see that I'm using DBCC INPUTBUFFER to determine what the last query was. Utilizing the field called #lastquery.eventinfo# I was hoping to see some queries connected to our datasource. After testing however, I am not getting any proof of my coldfusion server sending sql to my sql server. The queries were successful, because they returned data to my test coldfusion  page, but I couldn't find my query in the inputbuffer command. I know it works, because my sql server queries (run locally on the sql server) returned some results and would properly show up after using the INPUTBUFFER command. However, when I send some queries via <CFQUERY> I do not see the queries in the inputbuffer command.  I do see the following "SET TRANSACTION ISOLATION LEVEL READ COMMITTED" next to the IP address of my Coldfusion server. So that leads me to believe that there is some transactional safety inherit with coldfusion.
Does coldfusion send ONLY my query to the database server or does it also come inherit with some transactional sql? Like when your CFM throws an error after a <cfquery>INSERT some rows here</cfquery> and the inserted rows do not show up because an error was thrown a few lines down?

Answer 1

I suggest that you look closely at the MySQL function library reference material for the version of MySQL that you are running ... and, consider upgrading if you need to.
In any case, you might be able to get more precision by asking for it, e.g. with the CAST() and CONVERT() functions.
The MySQL documentation (as recently as 5.0) discusses precision math functions.
Most significantly, though, it seems that MySQL now offers a library of geo-spatial (GIS) functions which might make it possible for you to go well beyond the Pythagorean Theorem in addressing your problem.  The boundaries of each ZIP Code are, of course, a closed polygon, and what you are really looking for here is to determine containment of a chosen point within this and/or adjacent polygons.  MySQL 5.0, for instance, appears to have considerable direct support for this.  You do have to purchase these data sets.
See:  http://dev.mysql.com/doc/refman/5.0/en/spatial-extensions.html