SQL Server Constraints Across Tables

Posted by chama on Stack Overflow See other posts from Stack Overflow or by chama
Published on 2010-05-05T20:07:35Z Indexed on 2010/05/05 20:48 UTC
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sql-server

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constraints

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check-constraints

I have a SQL Server database with an Apartment table (which has columns FloorNum and BuildingID) and an ApartmentBuilding table (with column NumFloors). Is there any way to set up a constraint (using the SQL Server UI) to check that Apartment.FloorNum is greater than ApartmentBuilding.NumFloors?

I tried this:

FloorNum > ApartmentBuilding.NumFloors

but now I realize that I somehow have to join the columns on the BuildingID, but I have no idea how to do that within a constraint.

Thanks for your help!

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