SQL: GROUP BY records and then get last record from each group? [duplicate]

Answer 1

SELECT MAX("id"), "name" FROM "test" WHERE "attendence" = 1 GROUP BY "name"

Answer 2

SELECT a.* 
FROM test a 
WHERE a.attendence = 1 
AND NOT EXISTS (select 1 from test where name = a.name and id > a.id and attendence = 1)
GROUP BY name 

Might not even need the group by anymore.

Answer 3

Use the following query:

SELECT * FROM `test` WHERE `attendence`=1 GROUP BY name ORDER BY `id` DESC LIMIT 1

That will only select the row that meets the criteria with the highest id.

Answer 4

SELECT Name, Max(ID) FROM table WHERE attendance = 1 GROUP BY Name