现在我有了这个 COUNT (enrollment_id) AS enrollments, MAX (result) AS highest_resultAVG (result) AS average_result,FROM WHEREresult IS NULL
我想要的是注册总人数,这就是COUNT(enroll
我想用在MySQL中使用左连接选择的'appearance_count‘来更新people表。我只是在语法上有点问题。在下面的查询中,我应该把update语句放在哪里?下面是我的查询的原始select形式: COUNT(appearances.id) as app_count, HAVING app_count > 0;
如何获取"app_count“并将p