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Set numbers as a varchar field and compare in MySQL
Let us first create a table −
mysql> create table DemoTable -> ( -> StudentId int NOT NULL AUTO_INCREMENT PRIMARY KEY, -> StudentScore varchar(100) -> ); Query OK, 0 rows affected (0.66 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable(StudentScore) values('90');
Query OK, 1 row affected (0.21 sec)
mysql> insert into DemoTable(StudentScore) values('100');
Query OK, 1 row affected (0.13 sec)
mysql> insert into DemoTable(StudentScore) values('56');
Query OK, 1 row affected (0.10 sec)
mysql> insert into DemoTable(StudentScore) values('98');
Query OK, 1 row affected (0.13 sec)Display all records from the table using select statement −;
mysql> select *from DemoTable;
Output
+-----------+--------------+ | StudentId | StudentScore | +-----------+--------------+ | 1 | 90 | | 2 | 100 | | 3 | 56 | | 4 | 98 | +-----------+--------------+ 4 rows in set (0.00 sec)
Here is the query to compare in varchar fields −
mysql> select *from DemoTable where CAST(StudentScore AS SIGNED) > 91;
Output
+-----------+--------------+ | StudentId | StudentScore | +-----------+--------------+ | 2 | 100 | | 4 | 98 | +-----------+--------------+ 2 rows in set (0.00 sec)
Updated on 30-Jul-2019 22:30:26
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