MySQL query to increase item value price for multiple items in a single query?
To increase item value for multiple items in a single query, you can use the CASE statement in MySQL. Let us first create a table −
mysql> create table DemoTable
-> (
-> ProductName varchar(20),
-> ProductPrice int
-> );
Query OK, 0 rows affected (0.51 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable values('Product-1',700);
Query OK, 1 row affected (0.11 sec)
mysql> insert into DemoTable values('Product-2',1000);
Query OK, 1 row affected (0.15 sec)
mysql> insert into DemoTable values('Product-3',3000);
Query OK, 1 row affected (0.10 sec)Display all records from the table using select statement −
mysql> select *from DemoTable;
This will produce the following output −
+-------------+--------------+
| ProductName | ProductPrice |
+-------------+--------------+
| Product-1 | 700 |
| Product-2 | 1000 |
| Product-3 | 3000 |
+-------------+--------------+
3 rows in set (0.00 sec)
Here is the MySQL query to increase item value price for multiple items −
mysql> update DemoTable
-> set ProductPrice=
-> case when ProductName='Product-1' then ProductPrice+((ProductPrice*20)/100)
-> when ProductName='Product-2' then ProductPrice+((ProductPrice*40)/100)
-> when ProductName='Product-3' then ProductPrice+((ProductPrice*60)/100)
-> end;
Query OK, 3 rows affected (0.14 sec)
Rows matched: 3 Changed: 3 Warnings: 0
Let us check the table records once again −
mysql> select *from DemoTable;
This will produce the following output −
+-------------+--------------+
| ProductName | ProductPrice |
+-------------+--------------+
| Product-1 | 840 |
| Product-2 | 1400 |
| Product-3 | 4800 |
+-------------+--------------+
3 rows in set (0.00 sec)
Published on 13-Dec-2019 10:11:32
