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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)
Updated on 13-Dec-2019 06:36:06
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