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MySQL sort string number?
To sort string number, use the CAST() function from MySQL. The syntax is as follows −
SELECT *FROM yourTableName ORDER BY (yourColumnName as Decimal(integerValue,integerValueAfterDecimalPoint)) desc;
To understand the above syntax, let us first create a table. The query to create a table is as follows −
mysql> create table SortingStringDemo -> ( -> Amount varchar(10) -> ); Query OK, 0 rows affected (0.91 sec)
Insert some records in the table using insert command. The query is as follows.
mysql> insert into SortingStringDemo values('12.34');
Query OK, 1 row affected (0.21 sec)
mysql> insert into SortingStringDemo values('124.50');
Query OK, 1 row affected (0.56 sec)
mysql> insert into SortingStringDemo values('9.59');
Query OK, 1 row affected (0.20 sec)
mysql> insert into SortingStringDemo values('150.68');
Query OK, 1 row affected (0.17 sec)
mysql> insert into SortingStringDemo values('600.54');
Query OK, 1 row affected (0.11 sec)Display all records from the table using select statement. The query is as follows.
mysql> select *from SortingStringDemo;
The following is the output.
+--------+ | Amount | +--------+ | 12.34 | | 124.50 | | 9.59 | | 150.68 | | 600.54 | +--------+ 5 rows in set (0.00 sec)
Here is the query to sort string number in descending order.
mysql> select *from SortingStringDemo order by cast(Amount as Decimal(6,2)) desc;
The following is the output.
+--------+ | Amount | +--------+ | 600.54 | | 150.68 | | 124.50 | | 12.34 | | 9.59 | +--------+ 5 rows in set (0.00 sec)
Updated on: 25-Jun-2020
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