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How to display highest value from a string with numbers set as varchar in MySQL?
For this, you need to cast the varchar value to INTEGER.
Let us first create a table −
mysql> create table DemoTable765 (ItemPrice varchar(200)); Query OK, 0 rows affected (0.52 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable765 values('567.00');
Query OK, 1 row affected (0.16 sec)
mysql> insert into DemoTable765 values('1089.00');
Query OK, 1 row affected (0.10 sec)
mysql> insert into DemoTable765 values('540.00');
Query OK, 1 row affected (0.15 sec)
mysql> insert into DemoTable765 values('788.00');
Query OK, 1 row affected (0.39 sec)Display all records from the table using select statement −
mysql> select *from DemoTable765;
This will produce the following output -
+-----------+ | ItemPrice | +-----------+ | 567.00 | | 1089.00 | | 540.00 | | 788.00 | +-----------+ 4 rows in set (0.00 sec)
Following is the query to display highest value from a string with numbers. We have used CAST() to cast it to INTEGER −
mysql> select *from DemoTable765 order by cast(ItemPrice AS SIGNED INTEGER) DESC;
This will produce the following output -
+-----------+ | ItemPrice | +-----------+ | 1089.00 | | 788.00 | | 567.00 | | 540.00 | +-----------+ 4 rows in set, 4 warnings (0.00 sec)
Updated on: 03-Sep-2019
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