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)

AmitDiwan

Published on 26-Aug-2019 07:24:03

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