Need sql query help to find profile contribution? - sql

Question

I have two tables one for user profile(mls_user) and second for user activity(mls_entry).
The following table(mls_user) is for profile user where i am storing all the information of users.
=====================================================
|| user_id || user_name || user_role || user_email ||
=====================================================
|| 140 || santosh || 2 ||san#mail.com||
|| 150 || Deepak || 2 ||dep#mail.com||
|| 152 || sandeep || 2 ||sad#mail.com||
=====================================================
i have the second table(mls_entry) where i am storing user activity like below:
=======================================================
|| id || user_id || category || Distance || status ||
|| 1 || 140 || running || 10 || approved ||
|| 2 || 140 || running || 20 || approved ||
|| 3 || 140 || cycling || 40 || rejected ||
|| 4 || 140 || cycling || 20 || approved ||
|| 5 || 150 || running || 15 || approved ||
|| 6 || 152 || cycling || 50 || approved ||
=======================================================
Now I want:
==================================================================
|| user_name || runing_entry || cycling_entry || total_distance ||
==================================================================
|| santosh || 2 || 2 || 50 ||
|| deepak || 1 || 1 || 15 ||
|| sandeep || 1 || 1 || 50 ||
==================================================================
So i am not able to find the solution for this. I have tried the following query which i try but result showing wrong.
SELECT mls_user.name,
(CASE
WHEN mls_entry.category='running'
THEN SUM(mls_entry.category='running')
ELSE 0 END) AS runnerEntry,
(CASE
WHEN mls_entry.category='cycling'
THEN SUM(mls_entry.category='cycling')
ELSE 0 END) AS cyclingEntry,
(CASE
WHEN SUM(mls_entry.distance) AND mls_entry.category='running' AND mls_entry.status='approved'
THEN SUM(mls_entry.distance) ELSE 0 END) AS total_point_runner FROM mls_user LEFT JOIN mls_entry ON mls_user.id = mls_entry.user_id GROUP BY mls_user.id HAVING mls_user.role = 2

Answer 1

I would go for conditional aggregation:
select u.user_name, u.user_id
sum(case when category = 'running' then 1 else 0 end) as running,
sum(case when category = 'cycling' then 1 else 0 end) as running,
sum(case when status = 'approved' then distance else 0 end) as distance
from mls_user u join
mls_entry e
on e.user_id = u.user_id
group by u.user_name, u.user_id;

Answer 2

Try this
Select user_name,user_id
,(Select Count(ID) From mls_entry Where mls_entry.user_id=mls_user.user_id AND category='running' As X) As runing_entry
,(Select Count(ID) From mls_entry Where mls_entry.user_id=mls_user.user_id AND category='cycling' As Y) As cycling_entry
,(Select SUM(total_distance) From mls_entry Where mls_entry.user_id=mls_user.user_id As Z) As total_distance
From mls_user