MySQL group by for separate id without using GROUP BY to remove duplicate column row?
For this, you can use DISTINCT keyword. Let us first create a table −
mysql> create table DemoTable1801
(
Name varchar(20),
Score int
);
Query OK, 0 rows affected (0.00 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable1801 values('John',98);
Query OK, 1 row affected (0.00 sec)
mysql> insert into DemoTable1801 values('John',98);
Query OK, 1 row affected (0.00 sec)
mysql> insert into DemoTable1801 values('John',99);
Query OK, 1 row affected (0.00 sec)
mysql> insert into DemoTable1801 values('Carol',99);
Query OK, 1 row affected (0.00 sec)Display all records from the table using select statement −
mysql> select * from DemoTable1801;
This will produce the following output −
+-------+-------+
| Name | Score |
+-------+-------+
| John | 98 |
| John | 98 |
| John | 99 |
| Carol | 99 |
+-------+-------+
4 rows in set (0.00 sec)
Here is the query to group by for separate id −
mysql> select distinct Name,Score from DemoTable1801;
This will produce the following output −
+-------+-------+
| Name | Score |
+-------+-------+
| John | 98 |
| John | 99 |
| Carol | 99 |
+-------+-------+
3 rows in set (0.00 sec)
Published on 24-Dec-2019 10:27:12
