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Select Only 3 Ordered Rows on a MySQL Table
For this, you can use ORDER BY clause along with LIMIT. Let us first create a table −
mysql> create table DemoTable1551 -> ( -> EmployeeId int NOT NULL AUTO_INCREMENT PRIMARY KEY, -> EmployeeName varchar(20) -> ); Query OK, 0 rows affected (0.52 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable1551(EmployeeName) values('Chris'); Query OK, 1 row affected (0.25 sec) mysql> insert into DemoTable1551(EmployeeName) values('Robert'); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable1551(EmployeeName) values('Mike'); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable1551(EmployeeName) values('Sam'); Query OK, 1 row affected (0.11 sec) mysql> insert into DemoTable1551(EmployeeName) values('David'); Query OK, 1 row affected (0.09 sec) mysql> insert into DemoTable1551(EmployeeName) values('Adam'); Query OK, 1 row affected (0.11 sec)
Display all records from the table using select statement −
mysql> select * from DemoTable1551;
This will produce the following output −
+------------+--------------+ | EmployeeId | EmployeeName | +------------+--------------+ | 1 | Chris | | 2 | Robert | | 3 | Mike | | 4 | Sam | | 5 | David | | 6 | Adam | +------------+--------------+ 6 rows in set (0.00 sec)
Following is the query to select only 3 ordered rows in a MySQL table −
mysql> select * from DemoTable1551 -> order by EmployeeId desc limit 0,3;
This will produce the following output −
+------------+--------------+ | EmployeeId | EmployeeName | +------------+--------------+ | 6 | Adam | | 5 | David | | 4 | Sam | +------------+--------------+ 3 rows in set (0.00 sec)
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