How do I update all employees' Date of Employment (DOE) to be two days later using MySQL?

To change all employees' DOE (Date of Employment) to two days later, you need to use the DATE_ADD function in MySQL. The syntax shown in your second attempt is correct for MySQL.

Step 1: Construct the UPDATE statement.
The UPDATE statement modifies existing records in a table. The SET clause specifies which column to modify and its new value. To add two days to the DOE column, use the DATE_ADD function with INTERVAL 2 DAY.

The complete and correct query is:

UPDATE Employee
SET DOE = DATE_ADD(DOE, INTERVAL 2 DAY);

This query will update the DOE column for all rows in the Employee table, adding two days to each existing DOE value.

The final answer is $\boxed{\text{UPDATE Employee SET DOE = DATE\_ADD(DOE, INTERVAL 2 DAY);}}$