I wanted to lock a column in a query and I just couldn't be bothered making a a form. Then it occured to me I could add a blank space into the columns that I wanted locked and the user wouldn't be able to inadvertantly change data in those columns. You will see how it works in the following 2 samples. The user can only change the data in the last column.
Figure 1 - Adding Space locks the column from data entry
Figure 2 - Only the Rocktype field can be edited
Note: Tempvars are used to filter the data