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)

Rama Giri

Published on 10-Jul-2019 11:45:28

• Related Questions & Answers
• Can we compare numbers in a MySQL varchar field?
• How to set a string with hyphen and numbers in MySQL varchar?
• Delete last value and fix two new values (VARCHAR Numbers) in MySQL declared as VARCHAR?
• How to display highest value from a string with numbers set as varchar in MySQL?
• Convert from varchar to datetime and compare in MySQL?
• Sorting varchar field numerically in MySQL?
• Order VARCHAR records with string and numbers in MySQL
• Getting the maximum value from a varchar field in MySQL
• Searching for an integer value in a varchar field in MySQL?
• Searching BETWEEN dates stored as varchar in MySQL?
• Compare only day and month with date field in MySQL?
• MySQL query to remove numbers after hyphen in a VARCHAR string with numbers
• Count the number of occurrences of a string in a VARCHAR field in MySQL?
• Order by date set with varchar type in MySQL
• Use of String.compare for a varchar field in SAP