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Update only a single column value in MySQL
Let us first create a table −
mysql> create table DemoTable1605 -> ( -> StudentId int NOT NULL AUTO_INCREMENT PRIMARY KEY, -> StudentName varchar(20), -> StudentCountryName varchar(20) -> ); Query OK, 0 rows affected (0.48 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable1605(StudentName,StudentCountryName) values('Adam','AUS');
Query OK, 1 row affected (0.21 sec)
mysql> insert into DemoTable1605(StudentName,StudentCountryName) values('John','US');
Query OK, 1 row affected (0.08 sec)
mysql> insert into DemoTable1605(StudentName,StudentCountryName) values('Bob','UK');
Query OK, 1 row affected (0.11 sec)Display all records from the table using select statement −
mysql> select * from DemoTable1605;
This will produce the following output −
+-----------+-------------+--------------------+ | StudentId | StudentName | StudentCountryName | +-----------+-------------+--------------------+ | 1 | Adam | AUS | | 2 | John | US | | 3 | Bob | UK | +-----------+-------------+--------------------+ 3 rows in set (0.00 sec)
Following is the query to update only a single column value in MySQL −
mysql> update DemoTable1605 set StudentName='Chris' where StudentCountryName='UK'; Query OK, 1 row affected (0.09 sec) Rows matched: 1 Changed: 1 Warnings: 0
Let us check the table records once again −
mysql> select * from DemoTable1605;
This will produce the following output −
+-----------+-------------+--------------------+ | StudentId | StudentName | StudentCountryName | +-----------+-------------+--------------------+ | 1 | Adam | AUS | | 2 | John | US | | 3 | Chris | UK | +-----------+-------------+--------------------+ 3 rows in set (0.00 sec)
Updated on: 28-Feb-2020
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