How to select a field corresponding to the field in which MAX() exists?
For this, you can use sub query along with aggregate function MAX(). Let us first create a table −
mysql> create table DemoTable
-> (
-> ProductId int,
-> ProductAmount int
-> );
Query OK, 0 rows affected (0.78 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable values(1001,7895);
Query OK, 1 row affected (0.32 sec)
mysql> insert into DemoTable values(1003,8903);
Query OK, 1 row affected (0.13 sec)
mysql> insert into DemoTable values(1010,7690);
Query OK, 1 row affected (0.15 sec)
mysql> insert into DemoTable values(2010,8450);
Query OK, 1 row affected (0.12 sec)
Display all records from the table using select statement −
mysql> select *from DemoTable;
This will produce the following output −
+-----------+---------------+
| ProductId | ProductAmount |
+-----------+---------------+
| 1001 | 7895 |
| 1003 | 8903 |
| 1010 | 7690 |
| 2010 | 8450 |
+-----------+---------------+
4 rows in set (0.00 sec)
Following is the query to select a field corresponding to the field in which max() exists −
mysql> select *from DemoTable
-> where ProductAmount=( select max(ProductAmount) from DemoTable);
This will produce the following output −
+-----------+---------------+
| ProductId | ProductAmount |
+-----------+---------------+
| 1003 | 8903 |
+-----------+---------------+
1 row in set (0.05 sec)
Published on 13-Dec-2019 11:06:06
