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Help with Self Join (I think)

ljm
in Relationships

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I have a table called addresses which has a field called current, each person can have a number of addresses; work, home, summer etc.

I have a relationship to the address table called Current Address based on ID and the field Current, which allows the current address to be shown on all the layouts where it is required, it works well.

Here is my problem, I would like to allow only one record to be set as current, but I can't figure out how to check to see if one is already set as current, and then message the user that another record is already set as current. I think a self-join could help, but not sure how to set it up. Any suggestions are appreciated.

Thanks,

Linda

Put the ID of the current address record in the Contacts table instead. That way you can only have one current address for any contact.

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https://fmforums.com/topic/45843-help-with-self-join-i-think/
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