MySQL query to retrieve records from the part of a comma-separated list?

To retrieve records from the part of a comma-separated list, you can use built in function FIND_IN_SET().

Let us first create a table −

mysql> create table DemoTable
   (
   Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,
   Name varchar(20),
   Marks varchar(200)
   );
Query OK, 0 rows affected (0.61 sec)

Following is the query to insert some records in the table using insert command −

mysql> insert into DemoTable(Name,Marks) values('Larry','98,34,56,89');
Query OK, 1 row affected (0.15 sec)
mysql> insert into DemoTable(Name,Marks) values('Chris','67,87,92,99');
Query OK, 1 row affected (0.15 sec)
mysql> insert into DemoTable(Name,Marks) values('Robert','33,45,69,92');
Query OK, 1 row affected (0.22 sec)

Following is the query to display records from the table using select command −

mysql> select *from DemoTable;

This will produce the following output −

+----+--------+-------------+
| Id | Name   | Marks       |
+----+--------+-------------+
| 1  | Larry  | 98,34,56,89 |
| 2  | Chris  | 67,87,92,99 |
| 3  | Robert | 33,45,69,92 |
+----+--------+-------------+
3 rows in set (0.00 sec)

Following is the query to retrieve records from the part of a comma separated list. Here, we are getting the records of a student with marks 99 −

mysql> select Id,Name from DemoTable where find_in_set('99',Marks) > 0;

This will produce the following output −

+----+-------+
| Id | Name  |
+----+-------+
| 2  | Chris |
+----+-------+
1 row in set (0.00 sec)