Log In

Come Join Us!

Are you a
Computer / IT professional?
Join Tek-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Tek-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here


need help with update statement

need help with update statement

need help with update statement

I have 2 tables Master/Detail  I need to for each record in the Master get a total count of records that match in the detail table and apply that count to a field in the Master. At the same time I also need to sum a field in the detail and apply that to a field in the master. If this is unclear I will try to explain better.
Any help is appreciated.

RE: need help with update statement

Update [Main Table]
Set [Main Table.FieldtoUpdate]=
(Select Count(*)
from [Main Table], [Detail Table]
where [Main Table].[Linkingfield]= [Detail Table].[Linkingfield]
Group by [DetailTable].[FieldtoGroupby])

To do the sum just replace the count aggregate function with sum.

Hope this helps...

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Tek-Tips Forums free from inappropriate posts.
The Tek-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Tek-Tips forums is a member-only feature.

Click Here to join Tek-Tips and talk with other members!

Close Box

Join Tek-Tips® Today!

Join your peers on the Internet's largest technical computer professional community.
It's easy to join and it's free.

Here's Why Members Love Tek-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close