Invalid column name

think i have made a total mess of this query now, can anyone see what i am doing wrong?

Invalid column name 'manName'

            SELECT  m.manId, m.name as manName, p.manId, p.catId
            FROM products p, manufacturers m
            WHERE p.manId = m.manId
            AND p.catId='#URL.catId#'
            GROUP BY manName
LVL 12
pigmentartsAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

HuyBDCommented:
yes, the manName is field alias

It should be

            SELECT  m.manId, m.name as manName, p.manId, p.catId
            FROM products p, manufacturers m
            WHERE p.manId = m.manId
            AND p.catId='#URL.catId#'
            GROUP BY m.name
or

            SELECT * FROM (SELECT  m.manId, m.name as manName, p.manId, p.catId
            FROM products p, manufacturers m
            WHERE p.manId = m.manId
            AND p.catId='#URL.catId#') as T
            GROUP BY m.name

HuyBD;
0
HuyBDCommented:
I have missing in 2nd query

            SELECT * FROM (SELECT  m.manId, m.name as manName, p.manId, p.catId
            FROM products p, manufacturers m
            WHERE p.manId = m.manId
            AND p.catId='#URL.catId#') as T
            GROUP BY manName
0
pigmentartsAuthor Commented:
thanks for your reply, not sure if i am getting this, but i tried


          SELECT * FROM (SELECT  m.manId, m.name as manName, p.manId, p.catId
            FROM products p, manufacturers m
            WHERE p.manId = m.manId
            AND p.catId='#URL.catId#') as T
            GROUP BY manName

as posted and i get

[Macromedia][SQLServer JDBC Driver][SQLServer]Column 'm.manId' is invalid in the select list because it is not contained in either an aggregate function or the GROUP BY


or this for the 2ed query


 [Macromedia][SQLServer JDBC Driver][SQLServer]The column 'manId' was specified multiple times for 'T'.

for

  SELECT * FROM (SELECT  m.manId, m.name as manName, p.manId, p.catId
            FROM products p, manufacturers m
            WHERE p.manId = m.manId
            AND p.catId='#URL.catId#') as T
            GROUP BY manName

0
Introducing Cloud Class® training courses

Tech changes fast. You can learn faster. That’s why we’re bringing professional training courses to Experts Exchange. With a subscription, you can access all the Cloud Class® courses to expand your education, prep for certifications, and get top-notch instructions.

HuyBDCommented:
Please check table manufacturers for id field name!
0
LowfatspreadCommented:
SELECT  m.manId, m.name as manName, p.manId, p.catId
            FROM products p
            Inner Join manufacturers m
                on  p.manId = m.manId
            Where p.catId='#URL.catId#'
            Order by m.name
 
you can't group by just one of the selected columns...

what are you actually trying to achieve?
which database system are you using?
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
pigmentartsAuthor Commented:
manufacturers  table...

manId
imageUrl
description
name
contactName
0
pigmentartsAuthor Commented:
you can't group by just one of the selected columns...
 so i would have to list them all out, would this not make it slow?


what are you actually trying to achieve?

to show a list of manufacturers based on the products displayed. so if they are ten products on screen they maybe linked to a manufacture if so display them.

which database system are you using?
MS SQL
0
pigmentartsAuthor Commented:
i see what this is doing now,


            Inner Join manufacturers m
                on  p.manId = m.manId


so really there was no need for me to use a group by anyhow, cus if i get what the above is saying you are joining the two table up based on a matching manid? which is what i want.
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Query Syntax

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.