Set all the columns of a MySQL table to a particular value with a single query
Let us first create a table −
mysql> create table DemoTable
(
ClientId int NOT NULL AUTO_INCREMENT PRIMARY KEY,
ClientName varchar(40),
ClientAge int,
ClientCountryName varchar(40)
);
Query OK, 0 rows affected (0.57 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable(ClientName,ClientAge,ClientCountryName) values('Chris',25,'US');
Query OK, 1 row affected (0.33 sec)
mysql> insert into DemoTable(ClientName,ClientAge,ClientCountryName) values('Bob',55,'UK');
Query OK, 1 row affected (0.16 sec)
mysql> insert into DemoTable(ClientName,ClientAge,ClientCountryName) values('David',45,'AUS');
Query OK, 1 row affected (0.14 sec)Display all records from the table using select statement −
mysql> select *from DemoTable;
This will produce the following output −
+----------+------------+-----------+-------------------+
| ClientId | ClientName | ClientAge | ClientCountryName |
+----------+------------+-----------+-------------------+
| 1 | Chris | 25 | US |
| 2 | Bob | 55 | UK |
| 3 | David | 45 | AUS |
+----------+------------+-----------+-------------------+
3 rows in set (0.00 sec)
Here is the query to set all the columns of a MySQL table to a particular value −
mysql> update DemoTable
set ClientName='Sam',ClientAge=48,ClientCountryName='AUS' where ClientId=2;
Query OK, 1 row affected (0.22 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 −
+----------+------------+-----------+-------------------+
| ClientId | ClientName | ClientAge | ClientCountryName |
+----------+------------+-----------+-------------------+
| 1 | Chris | 25 | US |
| 2 | Sam | 48 | AUS |
| 3 | David | 45 | AUS |
+----------+------------+-----------+-------------------+
3 rows in set (0.00 sec)
Published on 10-Oct-2019 15:39:20
