Run the statements in the right panel.

The ALTER TABLE statement is used to alter the pay column. The column will be redefined as salary + 2 * bonus. Note that existing records are not changed.

The integrity checking is turned on, and the generated columns are now computed with the new calculation. There are two ways of doing this. If the integrity is turned back on, the previously generated columns are not recalculated if you use the unchecked option.

The commands in the editor add some new records to the table and run a select to show that the pay for the new values is calculated using the new definition for that column, but the old columns are unchanged.