我如何在表中获取最大和

Question

I have an SQL database with a table like this:

ObjID Rating
123   1
333   0
123   0
123   1
567   1

An Ojbect ID can show up in the table multiple times with different ratings, I need a way to select a "distinct" ObjID check all of its ratings and compare that to all other "distinct" ObjIDs and compare those ratings. In the end I should have the 1st - 3rd ObjIDs with the over all highest ratings, in this example 123, 567 and 333 would be printed out.

Answer 1

So the rating of each object is the total sum of all ratings for that object in the table?

SELECT ObjID, SUM(Rating) AS TotalRating
FROM ObjectTable
GROUP BY ObjID
ORDER BY SUM(Rating) DESC
LIMIT 3