Display Row ID

I have a table that displays stores multiple markers for different sites for google maps.

Table: SITEID, LAT, LNG

If they move the marker it updates the table that all works fine

I would like to display the gridRowID i.e. 1,2,3,4,5,6 etc as the first column. How can this be done without causing the dataprocessor to fail as it want to send all four columns of data when there is only three to store.

I used a dummy field and then removed field in php