Sql Max function with Character data type

Question

0.00/5 (No votes)

See more:

Hello everybody
I am storing number values like 1,23...99 in a field, and this field have character data type.
I need max value from this field but due to character data type it is not returning correct value.
If u have any suggestion then please tell me..
Thanks in advance

Posted 20-Dec-11 21:42pm

Dev Kashyap

Add a Solution

3 solutions

Solution 1

CAST (or CONVERT) your text result to a numeric one and then use MAX.

Posted 20-Dec-11 21:55pm

CPallini

Solution 3

Your problem is similar to this person :

Find maximum value from any table[^]

Posted 20-Dec-11 22:24pm

Amir Mahfoozi

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

OriginalGriff · Accepted Answer · 2011-12-20T22:19:00

Never store numbers in a character based field, or any form of comparison cannot work correctly. For example, the character based value "10" is before the character based value "9".

By preference, store numeric values in numeric fields.
If you can't change the table definition (and I would, it is a lot more efficient and prone to errors) you can CAST the values:

SQL

SELECT MAX(CAST(dat as int)) FROM myTable