UPDATE if exists else INSERT in SQL

Question

I\'m trying to implement a SQL query to \"UPDATE if exists else INSERT\"

My table(Allowance) is as below:

EmployeeID int(8) PK
Year year         


        

Answer 1

The below query will fulfill your requirement.

INSERT INTO `ALLOWANCE` (`EmployeeID`, `Year`, `Month`, `OverTime`,`Medical`,
`Lunch`, `Bonus`, `Allowance`) values (10000001, 2014, 4, 10.00, 10.00,
10.45, 10.10, 40.55) ON DUPLICATE KEY UPDATE `EmployeeID` = 10000001