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trigger

 
natx
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i have the following trigger which inserts the region field into the member table every time a user registers or updates their personal details through the website.
CREATE TRIGGER [regiontree] ON [member]
FOR INSERT, UPDATE
AS
UPDATE member SET region = Region.region FROM Region WHERE member.country = Region.country
However i have been told that to this trigger will update all the rows in the table every time.
How can i make this trigger to select one single row?
the member table has the unique identidier memberid.
The Region table doesnt have any unique identifier, it only contains two fields (region and country) and a fixed number of records (50 countries and 15 regions).
Many thanks for any help
Natalia http://www.nataliaz.com
 
Consider Paul's rocket mass heater.
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