How to order return duplicate column values only once in MySQL?

To return a column value only once in MySQL, let us first see an example and create a table −

mysql> create table DemoTable680(Status varchar(100)); Query OK, 0 rows affected (0.75 sec)

Insert some records in the table using insert command −

mysql> insert into DemoTable680 values('Busy'); Query OK, 1 row affected (0.36 sec) mysql> insert into DemoTable680 values('At Work'); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable680 values('Busy'); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable680 values('Blocked'); Query OK, 1 row affected (0.28 sec) mysql> insert into DemoTable680 values('Offline'); Query OK, 1 row affected (0.67 sec) mysql> insert into DemoTable680 values('Offline'); Query OK, 1 row affected (0.23 sec) mysql> insert into DemoTable680 values('Blocked'); Query OK, 1 row affected (0.14 sec)

Display all records from the table using select statement −

mysql> select *from DemoTable680;

This will produce the following output −

+---------+ | Status  | +---------+ | Busy    | | At Work | | Busy    | | Blocked | | Offline | | Offline | | Blocked | +---------+ 7 rows in set (0.00 sec)

Following is the query to return duplicate column values only once in MySQL -

mysql> select distinct Status from DemoTable680 order by Status;

This will produce the following output −

+---------+ | Status | +---------+ | At Work | | Blocked | | Busy    | | Offline | +---------+ 4 rows in set (0.00 sec)