Update rows from another table

Question

I have a table with 2 columns, Country and Qty. the field country has distinct acronyms of all the countries. Now my job is to replace those acronyms with the actual country name. Now there is another table with acronyms and corresponding country names. I have to take the values from this second table and update the first one where Acronyms match. Please help..

Solution

UPDATE  q
SET     country = a.country
FROM    quantity q
JOIN    acronym a
ON      a.acronym = q.country

Comments

[Chris Moutray]

+1 I've used tsql for years and never realised an alias could be used next to the update keyword!

[Thomas Fonseca]

Thanks Quassnoi! I found your answer helpful - now I can go home!