Error "SUM does not exist"

[Oliver Pike]

I'm getting the following error in a third party query tool that goes through a Connector ODBC connection:

"FUNCTION mydb.SUM does not exist. Check the 'Function Name Parsing and
Resolution' section in the Reference Manual"

I'm able to successfully run the same query (with the sum() function) through phpmyadmin which uses a different client driver (mysqlnd php native driver).

The error message appears to be coming from the database (or the driver) and not
the third party query tool. The only explanation I can come up with right now is that the sum() function is not being supported by the odbc driver, but I haven't
found any other instances online of people complaning about that limitation.