MySQL query to update a specific cell to be empty

Let us first create a table −

mysql> create table DemoTable
(
   Id int,
   Name varchar(50)
);
Query OK, 0 rows affected (0.47 sec)

Insert some records in the table using insert command −

mysql> insert into DemoTable values(1001,'Robert');
Query OK, 1 row affected (0.14 sec)
mysql> insert into DemoTable values(1002,'Sam');
Query OK, 1 row affected (0.14 sec)
mysql> insert into DemoTable values(1003,'Tom');
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 −

+------+--------+
| Id   | Name   | 
+------+--------+
| 1001 | Robert |
| 1002 | Sam    |
| 1003 | Tom    |
+------+--------+
3 rows in set (0.00 sec)

Following is the query to update a specific cell to be empty in MySQL −

mysql> update DemoTable set Name='' where Id=1003;
Query OK, 1 row affected (0.16 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   | Name   |
+------+--------+
| 1001 | Robert |
| 1002 | Sam    |
| 1003 |        |
+------+--------+
3 rows in set (0.00 sec)

AmitDiwan

Published on 01-Oct-2019 07:00:18

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