Question

I have this mysql table (as below image). I want to select id’s grouped by id

where:
datakey = label and datavalue = is_member
and, at the same time where:
datakey = since and datavalue = 20110204

So the end result should just be 105.

How can I achieve this?

Answer 1

It should be possible to achieve this without join. http://www.sqlfiddle.com/#!2/ca8d6/1

SELECT t.id
FROM table_name t
WHERE (datakey = 'Label' AND datavalue = 'is_member') OR (datakey = 'Since' AND datavalue = '20110204')
GROUP BY t.id
HAVING COUNT(datakey) = 2;