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Select results from the middle of a sorted list in MySQL?
To select results from the middle of a sorted list, use ORDER BY clause along with LIMIT.
Let us first create a table. Following is the query −
mysql> create table sortedListDemo -> ( -> Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, -> StudentName varchar(100) -> ); Query OK, 0 rows affected (0.46 sec)
Following is the query to insert some records in the table using insert command −
mysql> insert into sortedListDemo(StudentName) values('John');
Query OK, 1 row affected (0.62 sec)
mysql> insert into sortedListDemo(StudentName) values('Sam');
Query OK, 1 row affected (0.18 sec)
mysql> insert into sortedListDemo(StudentName) values('Adam');
Query OK, 1 row affected (0.13 sec)
mysql> insert into sortedListDemo(StudentName) values('James');
Query OK, 1 row affected (0.21 sec)
mysql> insert into sortedListDemo(StudentName) values('Jace');
Query OK, 1 row affected (0.13 sec)
mysql> insert into sortedListDemo(StudentName) values('Mike');
Query OK, 1 row affected (0.12 sec)
mysql> insert into sortedListDemo(StudentName) values('Carol');
Query OK, 1 row affected (0.18 sec)
mysql> insert into sortedListDemo(StudentName) values('Bob');
Query OK, 1 row affected (0.17 sec)
mysql> insert into sortedListDemo(StudentName) values('Ramit');
Query OK, 1 row affected (0.16 sec)
mysql> insert into sortedListDemo(StudentName) values('Chris');
Query OK, 1 row affected (0.21 sec)
mysql> insert into sortedListDemo(StudentName) values('Robert');
Query OK, 1 row affected (0.14 sec)
mysql> insert into sortedListDemo(StudentName) values('David');
Query OK, 1 row affected (0.21 sec)Following is the query to display all records from the table using select statement −
mysql> select * from sortedListDemo;
This will produce the following output −
+----+-------------+ | Id | StudentName | +----+-------------+ | 1 | John | | 2 | Sam | | 3 | Adam | | 4 | James | | 5 | Jace | | 6 | Mike | | 7 | Carol | | 8 | Bob | | 9 | Ramit | | 10 | Chris | | 11 | Robert | | 12 | David | +----+-------------+ 12 rows in set (0.00 sec)
Following is the query to select results from the middle of a sorted list. We have set LIMIT as 4, 6 that means 6 records will be displayed randomly −
mysql> select *from sortedListDemo -> order by StudentName -> LIMIT 4,6;
This will produce the following output −
+----+-------------+ | Id | StudentName | +----+-------------+ | 12 | David | | 5 | Jace | | 4 | James | | 1 | John | | 6 | Mike | | 9 | Ramit | +----+-------------+ 6 rows in set (0.00 sec)
Updated on: 30-Jul-2019
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