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Hi,

 

I am having an issue developing a query to fit a specific need I have. I know what I want to do conceptually, but I don't know how to translate it into SQL. Let me explain:

 

I have a Users table. The Primary Key in this table is UserId. I also have an EventSignUp table. Basically, users can sign up for particular Events, so the Events table consists of a match up of UserId and EventId.

 

What I am trying to do is retrieve all the users who have NOT signed up for a particular event. So given an EventId of 10, I would want to retrieve all the UserIds from the User table where there is not a match up of the UserId and 10 (the EventId) in the EventSignUp table.

 

 

 

I hope this is clear enough. If anyone needs further explanation, just say so. Thanks for your help.

 

 

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