Question

I have a table

id|user_id|start|stop
 1|      1|    1|   1
 2|      2|    1|   1
 3|      2|    1|   0
 4|      3|    0|   0

I want to get next result

user_id|total|start|stop
      1|    1|    1|   1
      2|    2|    2|   1
      3|    1|    0|   0

So i want to make 3 count and group it by user_id ang get. Is it possible to prepare query with Joins and without derived tables?

Answer 1

The total row as to count rows with 1 in start and 1 in stop twice.

SELECT user_id, 
   count(case start WHEN 1 then 1 else null end) AS start, 
   count(case stop WHEN 1 then 1 else null end)  AS stop, 
   count (*) AS total 
FROM   tablename 
GROUP  BY user_id