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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)
Updated on: 03-Sep-2019
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