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Select last record and update it in MySQL?
For this, you can use ORDER BY DESC LIMIT. Let us first create a table −
mysql> create table DemoTable -> ( -> Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, -> Name varchar(100) -> ); Query OK, 0 rows affected (0.59 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable(Name) values('John');
Query OK, 1 row affected (0.12 sec)
mysql> insert into DemoTable(Name) values('Sam');
Query OK, 1 row affected (0.19 sec)
mysql> insert into DemoTable(Name) values('Carol');
Query OK, 1 row affected (0.34 sec)Display all records from the table using select statement −
mysql> select *from DemoTable;
Output
+----+-------+ | Id | Name | +----+-------+ | 1 | John | | 2 | Sam | | 3 | Carol | +----+-------+ 3 rows in set (0.00 sec)
Following is the query to select last record and update it −
mysql> update DemoTable -> set Name='Robert' -> order by Id DESC limit 1; Query OK, 1 row affected (0.18 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 displaying we have successfully updated the last record −
Output
+----+--------+ | Id | Name | +----+--------+ | 1 | John | | 2 | Sam | | 3 | Robert | +----+--------+ 3 rows in set (0.00 sec)
Updated on: 30-Jul-2019
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