sql insert update if exists code example

Example 1: sql server if exists update else insert

if exists(SELECT * from Student where FirstName='Akhil' and LastName='Mittal')            
BEGIN            
 update Student set FirstName='Anu' where FirstName='Akhil'  
End                    
else            
begin  
insert into Student values(1,'Akhil','Mittal',28,'Male',2006,'Noida','Tenth','LFS','Delhi')  
end

Example 2: mysql insert exists update

INSERT INTO table (column_list)
VALUES (value_list)
ON DUPLICATE KEY UPDATE
   c1 = v1, 
   c2 = v2,
   ...;