MySQL query to fetch multiple least values?

For this, you can use a sub query along with MIN(). Let us first create a table−

mysql> create table DemoTable
   -> (
   -> Name varchar(20),
   -> Score int
   -> );
Query OK, 0 rows affected (0.56 sec)

Insert some records in the table using insert command −

mysql> insert into DemoTable values('John',56);
Query OK, 1 row affected (0.17 sec)
mysql> insert into DemoTable values('John',45);
Query OK, 1 row affected (0.24 sec)
mysql> insert into DemoTable values('John',58);
Query OK, 1 row affected (0.16 sec)
mysql> insert into DemoTable values('Chris',43);
Query OK, 1 row affected (0.15 sec)
mysql> insert into DemoTable values('Chris',38);
Query OK, 1 row affected (0.14 sec)
mysql> insert into DemoTable values('Chris',87);
Query OK, 1 row affected (0.14 sec)

Display all records from the table using select statement−

mysql> select *from DemoTable;

This will produce the following output−

+-------+-------+
| Name  | Score |
+-------+-------+
| John  |    56 |
| John  |    45 |
| John  |    58 |
| Chris |    43 |
| Chris |    38 |
| Chris |    87 |
+-------+-------+
6 rows in set (0.00 sec)

Here is the query to fetch multiple least values−

mysql> select *from DemoTable tbl1
   -> where Score IN( select min(Score) from DemoTable tbl2 where tbl1.Name=tbl2.Name);

This will produce the following output−

+-------+-------+
| Name  | Score |
+-------+-------+
| John  |    45 |
| Chris |    38 |
+-------+-------+
2 rows in set (0.00 sec)

AmitDiwan

Published on 12-Dec-2019 06:48:05

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