How do i merge this 2 data together to get data like this
SELECT A.schlvl AS School, COUNT(DISTINCT A.name) AS NoOfChild ,SUM(B.cat_id=1) AS Picture
FROM child AS A INNER JOIN
question AS B
ON A.child_id=B.child_id
WHERE B.answer=0 AND B.cat_id=1
GROUP BY A.schlvl
SELECT COUNT(DISTINCT A.name) AS Gotitright ,SUM(B.cat_id=2) AS Letters
FROM child AS A INNER JOIN
question AS B
ON A.child_id=B.child_id
WHERE B.answer = 0 AND B.cat_id = 2
GROUP BY A.schlvl
OR
Something like this, but i am stuck with this
SELECT A.schlvl AS School, COUNT(DISTINCT A.name WHERE B.answer=0 AND B.cat_id=1) AS Picture , COUNT(DISTINCT A.name WHERE B.answer=0 AND B.cat_id=2) AS Letters
FROM child AS A INNER JOIN
question AS B
ON A.child_id=B.child_id
GROUP BY A.schlvl
From your query.
You can try to use IN
in B.cat_id
to get cat_id
1
or 2
in WHERE
clause.
use Aggregate function condition let CASE WHEN
in SUM
function.
SELECT A.schlvl AS School, COUNT(DISTINCT CASE WHEN B.cat_id = 1 THEN A.name END) AS NoOfChild ,SUM(CASE WHEN B.cat_id IN (1,2) THEN 1 END) AS Picture
FROM
child AS A INNER JOIN question AS B ON A.child_id=B.child_id
WHERE B.answer=0 AND B.cat_id= in (1,2)
GROUP BY A.schlvl
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