A family of Microsoft relational database management systems designed for ease of use.
I'm curious about this. First, Access does NOT generate columns in a query. Either you add a column in the grid by pulling it from a table list or you add an expression. Or did Access create the query from the simple Query wizard? I would urge you to post the SQL statement for us to see so you can prevent it from happening in the future.
Also, if there were errors in the SQL statement, the setting I referred to were not correct.