Function MAX() in WHERE clause?

Question

0.00/5 (No votes)

See more:

Can I use MAX() - math SQL function in WHERE clause ?
I searched msdn forum but did not get any working query which uses MAX() function in WHERE clause.

Posted 21-Nov-13 3:55am

Swap9

Add a Solution

2 solutions

Solution 2

To specify condition for a group or an aggregate, instead WHERE statement, use HAVING[^]. There you'll find an example.

Posted 21-Nov-13 5:31am

Maciej Los

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)

E.F. Nijboer · Accepted Answer · 2013-11-21T04:10:00

Solution 1

You can't use it directly in a query because it is an aggregate function, meaning it does an operation on a set of data. So that is max(age) in the context of the sql below?

select * from person where age = max(age)

You probably mean the max(age) every person, but you must be specific on that. So what you can do is:

select * from person where age = (select max(age) from person)

Hopefully the above helps.

Good luck!

Posted 21-Nov-13 4:10am

E.F. Nijboer

v2

Comments

Swap9 21-Nov-13 10:19am

Thanks for responding - E.F. Nijboer.
Yes when i executed the first query it gave me this error.

"Msg 147, Level 15, State 1, Line 2
An aggregate may not appear in the WHERE clause unless it is in a subquery contained in a HAVING clause or a select list, and the column being aggregated is an outer reference."

where as the second worked fine.