Ok so here my code.

SELECT Department, COUNT(*) AS CountByTechAndMP
FROM Course
GROUP BY Department
WHERE MPCategory IS NOT NULL AND Technical = true;

I have been trying to fool with it but I just can't seem to get it. I feel like it is something easy that I am just missing.

有帮助吗?

解决方案

GROUP BY goes after WHERE

SELECT Department, COUNT(*) AS CountByTechAndMP
FROM Course
WHERE MPCategory IS NOT NULL AND Technical = true
GROUP BY Department
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