MySQL update multiple records in a single query?

Let us first create a table −

mysql> create table DemoTable    -> (    -> Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,    -> Marks1 int,    -> Marks2 int,    -> Marks3 int    -> ); Query OK, 0 rows affected (0.60 sec)

Insert some records in the table using insert command −

mysql> insert into DemoTable(Marks1,Marks2,Marks3) values(45,67,34); Query OK, 1 row affected (0.33 sec) mysql> insert into DemoTable(Marks1,Marks2,Marks3) values(89,87,56); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable(Marks1,Marks2,Marks3) values(87,56,54); Query OK, 1 row affected (0.31 sec)

Display all records from the table using select statement −

mysql> select *from DemoTable;

This will produce the following output −

+----+--------+--------+--------+ | Id | Marks1 | Marks2 | Marks3 | +----+--------+--------+--------+ |  1 |     45 |     67 |     34 | |  2 |     89 |     87 |     56 | |  3 |     87 |     56 |     54 | +----+--------+--------+--------+ 3 rows in set (0.00 sec)

Here is the query to update multiple records −

mysql> update DemoTable    -> set Marks1=98,Marks2=96,Marks3=99    -> where Id=1; Query OK, 1 row affected (0.18 sec) Rows matched: 1 Changed: 1 Warnings: 0

Let us check the table records once again −

mysql> select *from DemoTable;

This will produce the following output −

+----+--------+--------+--------+ | Id | Marks1 | Marks2 | Marks3 | +----+--------+--------+--------+ |  1 |     98 |     96 |     99 | |  2 |     89 |     87 |     56 | |  3 |     87 |     56 |     54 | +----+--------+--------+--------+ 3 rows in set (0.00 sec)