Update the content of a specific cell in MySQL

Let us first create a table −

mysql> create table DemoTable2029
   -> (
   -> Id int,
   -> FirstName varchar(20),
   -> LastName varchar(20)
   -> );
Query OK, 0 rows affected (0.98 sec)

Insert some records in the table using insert command −

mysql> insert into DemoTable2029 values(1,'Chris','Brown')
-> ;
Query OK, 1 row affected (0.13 sec)

mysql> insert into DemoTable2029 values(2,'David','Miller');
Query OK, 1 row affected (0.12 sec)

mysql> insert into DemoTable2029 values(3,'John','Smith');
Query OK, 1 row affected (0.20 sec)

mysql> insert into DemoTable2029 values(4,'John','Brown');
Query OK, 1 row affected (0.27 sec)

Display all records from the table using select statement −

mysql> select *from DemoTable2029;

This will produce the following output −

+------+-----------+----------+
| Id   | FirstName | LastName |
+------+-----------+----------+
| 1    | Chris     | Brown    |
| 2    | David     | Miller   |
| 3    | John      | Smith    |
| 4    | John      | Brown    |
+------+-----------+----------+
4 rows in set (0.00 sec)

Following is the query to update a specific cell −

mysql> update DemoTable2029
   -> set FirstName='Adam',LastName='Smith'
   -> where Id=4;
Query OK, 1 row affected (0.14 sec)
Rows matched: 1 Changed: 1 Warnings: 0

Let us check the table records once again −

mysql> select *from DemoTable2029;

This will produce the following output −

+------+-----------+----------+
| Id   | FirstName | LastName |
+------+-----------+----------+
| 1    | Chris     | Brown    |
| 2    | David     | Miller   |
| 3    | John      | Smith    |
| 4    | Adam      | Smith    |
+------+-----------+----------+
4 rows in set (0.00 sec)