সঠিক MySQL INSERT ... অন ডুপ্লিকেট কী সিনট্যাক্স?

সিনট্যাক্স নিম্নরূপ -

insert into yourTableName values(yourValue1,yourValue2,..N)
on duplicate key update yourColumnName1=yourValue1,yourColumnName2=yourValue2,....N;

আসুন প্রথমে একটি টেবিল তৈরি করি -

mysql> create table DemoTable1539
   -> (
   -> EmployeeName varchar(20),
   -> EmployeeSalary int,
   -> UNIQUE KEY(EmployeeName)
   -> );
Query OK, 0 rows affected (0.62 sec)

সন্নিবেশ কমান্ড -

mysql> insert into DemoTable1539 values('Chris',4500) on duplicate key update EmployeeName='Robert',EmployeeSalary=8500;
Query OK, 1 row affected (0.20 sec)
mysql> insert into DemoTable1539 values('David',5500) on duplicate key update EmployeeName='Robert',EmployeeSalary=8500;
Query OK, 1 row affected (0.10 sec)
mysql> insert into DemoTable1539 values('Chris',4500) on duplicate key update EmployeeName='Robert',EmployeeSalary=8500;
Query OK, 2 rows affected (0.14 sec)

সিলেক্ট স্টেটমেন্ট -

mysql> select * from DemoTable1539;

এটি নিম্নলিখিত আউটপুট −

+--------------+----------------+
| EmployeeName | EmployeeSalary |
+--------------+----------------+
| Robert       |           8500 |
| David        |           5500 |
+--------------+----------------+
2 rows in set (0.00 sec)