Mysql计数（*）为总计，其中总计？

不起作用：（

我认为您想要筛选组。请使用

HAVING COUNT（*）

而不是

WHERE

：

SELECT
  Id, QId, UName, Ans, Date, COUNT(*) * 10 as Total
FROM
  question
WHERE
  COUNT(*)
DESC
GROUP BY
  UName

如果要按元素数对组进行排序，请使用

排序依据

：

SELECT Id, QId, UName, Ans, Date, Count(*) * 10 as Total
FROM question
GROUP BY UName
HAVING Count(*)

---

我想您想筛选组。请使用

HAVING COUNT（*）

而不是

WHERE

：

SELECT
  Id, QId, UName, Ans, Date, COUNT(*) * 10 as Total
FROM
  question
WHERE
  COUNT(*)
DESC
GROUP BY
  UName

如果要按元素数对组进行排序，请使用

排序依据

：

SELECT Id, QId, UName, Ans, Date, Count(*) * 10 as Total
FROM question
GROUP BY UName
HAVING Count(*)

---

WHERE filters on rows，have filters Group WHERE filters on rows，have filters Group