Combine 2 SELECT statements with filled gaps - mysql

Question

I have this SELECT:
SELECT
m.`maschine-name` AS 'byMaschine',
q.`mname` AS 'byMName'
FROM
`qualitaet` q
INNER JOIN
maschinen m ON m.maschine = q.maschine
WHERE
q.`status`='1'
GROUP BY
concat(q.maschine, q.mname)
and get this result:
| maschine-name | mname |
| TYP 1 | 0 |
| TYP 2 | 3 |
| TYP 2 | 4 |
| TYP 3 | 0 |
| TYP 4 | 0 |
see SQL Fiddle here
Then i have nearly the same SELECT with additional COUNT and Datefilter:
SELECT
m.`maschine-name` AS 'byMaschine',
q.`mname` AS 'byMName',
COUNT(*) AS 'total'
FROM
`qualitaet` q
INNER JOIN
maschinen m ON m.maschine = q.maschine
WHERE
q.`created`>=NOW() - INTERVAL 2 DAY
AND
q.`status`='1'
GROUP BY
concat(q.maschine, q.mname)
and get this result:
| maschine-name | mname | total |
| TYP 2 | 3 | 1 |
| TYP 3 | 0 | 2 |
see SQL Fiddle here
The 2nd SELECT doesn't give me all information. I need a mix from both SELECTS
The 2nd SELECT should look like this result:
| maschine-name | mname | total |
| TYP 1 | 0 | 0 |
| TYP 2 | 3 | 1 |
| TYP 2 | 4 | 0 |
| TYP 3 | 0 | 2 |
| TYP 4 | 0 | 0 |
Is it possible to RIGHT JOIN with 2 SELECTS? Or is there another way to get the result?

Answer 1

Use conditional aggregation:
SELECT m.`maschine-name` AS byMaschine, q.`mname` AS byMName,
sum(q.created >= NOW() - INTERVAL 2 DAY) as Total
FROM qualitaet q INNER JOIN
maschinen m
ON m.maschine = q.maschine
WHERE q.status = '1'
GROUP BY q.maschine, q.mname;
Other suggestions:
There is no need to concatenate the grouping columns in the GROUP BY -- unless you really, really intend to do this (which I doubt).
If status is numeric, don't use single quotes for the constant.
Don't use single quotes for column aliases. In fact, your aliases don't need any quotes at all.