Updating last entry of a particular ID in MySQL
To update the last entry of a particular ID in MySQL, use ORDER BY DESC LIMIT 1. This would allow you to update the last entry i.e. row records.
Let us first create a table −
mysql> create table DemoTable824(
Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,
ClientName varchar(100),
ClientAge int
);
Query OK, 0 rows affected (0.56 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable824(ClientName,ClientAge) values('Chris',23);
Query OK, 1 row affected (0.14 sec)
mysql> insert into DemoTable824(ClientName,ClientAge) values('Robert',26);
Query OK, 1 row affected (0.12 sec)
mysql> insert into DemoTable824(ClientName,ClientAge) values('Bob',24);
Query OK, 1 row affected (0.17 sec)
mysql> insert into DemoTable824(ClientName,ClientAge) values('David',27);
Query OK, 1 row affected (0.18 sec)Display all records from the table using select statement −
mysql> select *from DemoTable824;
This will produce the following output −
+----+------------+-----------+
| Id | ClientName | ClientAge |
+----+------------+-----------+
| 1 | Chris | 23 |
| 2 | Robert | 26 |
| 3 | Bob | 24 |
| 4 | David | 27 |
+----+------------+-----------+
4 rows in set (0.00 sec)
Following is the query to update last entry of a particular ID in MySQL −
mysql> update DemoTable824 set ClientName='Adam',ClientAge=28 order by Id DESC limit 1;
Query OK, 1 row affected (0.20 sec)
Rows matched: 1 Changed: 1 Warnings: 0
Let us check the table records once again −
mysql> select *from DemoTable824;
This will produce the following output −
+----+------------+-----------+
| Id | ClientName | ClientAge |
+----+------------+-----------+
| 1 | Chris | 23 |
| 2 | Robert | 26 |
| 3 | Bob | 24 |
| 4 | Adam | 28 |
+----+------------+-----------+
4 rows in set (0.00 sec)
Published on 03-Sep-2019 15:41:13
