SQL Query to find the uid of the person with max(status_count+follower_count) and whose is_my_friend = 1
I have created a table with the following structure-
$sql = "CREATE TABLE followers
(
uid int UNSIGNED NOT NULL UNIQUE,
PRIMARY KEY(uid),
follower_count int UNSIGNED ,
is_my_friend bool,
status_count int UNSIGNED,
开发者_如何学JAVA location varchar(50)
)";
I need to find the uid of the person with max(status_count+follower_count) and whose is_my_friend = 1
I wrote the following query but I ain't getting the correct uid.
SELECT p.uid FROM (select uid,is_my_friend,max(follower_count+status_count) from followers) p WHERE p.is_my_friend = 1;
The following query will work:
Select uid
From followers
Where is_my_friend = 1
Order By (follower_count+status_count) desc LIMIT 0,1
Limit 0,1 works in MySql.
Or, if you want to return all rows where follower_count+status_count = max only, this is the query:
Select uid
From followers
Where is_my_friend = 1
And (follower_count+status_count) = (select max(follower_count+status_count)
from followers
where is_my_friend = 1)
SECLECT uid FROM followers ORDER BY (follower_count + status_count) DESC WHERE is_my_friend = 1
SELECT top 1 uid (follower_count+status_count) as totalcount FROM followers WHERE p.is_my_friend = 1 order by totalcount desc
I am not 100% if that order by is possible. Try it out, if not create a view that combines those fields
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