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Get Last Entry in a MySQL table?
You can get the last entry in a MySQL table using ORDER BY. The first approach is as follows:
Case 1: Using DESC LIMIT
SELECT * FROM yourTableName ORDER BY yourColumnName DESC LIMIT 1;
The second approach is as follows:
Case 2: Using MAX()
SET @anyVariableName = (SELECT MAX(yourColumnName) FROM yourTableName); SELECT *FROM yourtableName WHERE yourColumnName = @anyVariableName;
Now to understand both the approaches, let us create a table. The query to create a table is as follows:
mysql> create table lastEntryDemo -> ( -> Id int NOt NULL AUTO_INCREMENT, -> Name varchar(30), -> Age int, -> PRIMARY KEY(Id) -> ); Query OK, 0 rows affected (0.71 sec)
Insert some records in the table using insert command. The query is as follows:
mysql> insert into lastEntryDemo(Name,Age) values('Larry',24);
Query OK, 1 row affected (0.14 sec)
mysql> insert into lastEntryDemo(Name,Age) values('John',21);
Query OK, 1 row affected (0.19 sec)
mysql> insert into lastEntryDemo(Name,Age) values('David',22);
Query OK, 1 row affected (0.18 sec)
mysql> insert into lastEntryDemo(Name,Age) values('Bob',25);
Query OK, 1 row affected (0.20 sec)
mysql> insert into lastEntryDemo(Name,Age) values('Carol',29);
Query OK, 1 row affected (0.17 sec)
mysql> insert into lastEntryDemo(Name,Age) values('Mike',23);
Query OK, 1 row affected (0.14 sec)
mysql> insert into lastEntryDemo(Name,Age) values('Sam',20);
Query OK, 1 row affected (0.15 sec)Display all records from the table using select statement. The query is as follows:
mysql> select *from lastEntryDemo;
The following is the output:
+----+-------+------+ | Id | Name | Age | +----+-------+------+ | 1 | Larry | 24 | | 2 | John | 21 | | 3 | David | 22 | | 4 | Bob | 25 | | 5 | Carol | 29 | | 6 | Mike | 23 | | 7 | Sam | 20 | +----+-------+------+ 7 rows in set (0.00 sec)
Here is the query to get last entry using ORDER BY.
Case 1: DESC LIMIT
The query is as follows:
mysql> select *from lastEntryDemo order by Name desc limit 1;
The following is the output:
+----+------+------+ | Id | Name | Age | +----+------+------+ | 7 | Sam | 20 | +----+------+------+ 1 row in set (0.00 sec)
Case 2: Using MAX()
The query is as follows:
mysql> set @MaxId = (select max(Id) from lastEntryDemo); Query OK, 0 rows affected (0.00 sec) mysql> select *from lastEntryDemo where Id = @MaxId;
The following is the output:
+----+------+------+ | Id | Name | Age | +----+------+------+ | 7 | Sam | 20 | +----+------+------+ 1 row in set (0.00 sec)
Updated on: 30-Jul-2019
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