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select record one table and update another table

Anonymous User 2192 06-Nov-2014

I am trying to get 'business_id' and 'rating' from the table 'reviews' where 'review_id' is $approveReviewID

and then update 'rating' in 'business_details' with this retrieved rating from 'reviews' where 'business_id' is equal to that retrieved.

I have these two queries,

SELECT business_id, rating FROM reviews WHERE review_id = '$approveReviewID'
UPDATE business_details SET rating = rating + $rating WHERE business_id = '$businessID

is there a way to join these queries into one?

sql sql server 2012

Updated on 06-Nov-2014

Anonymous User

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1 Answers

06-Nov-2014

Yes, you can use the update-join syntax:

UPDATE business_details bd
JOIN   reviews r ON bd.business_id = r.business_id
SET    bd.rating = bd.rating + r.rating
WHERE  r.review_id = '$approveReviewID'

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