MySQL错误-COUNT不存在，错误1630

Question

我一直在使用mySQL，但是COUNT函数遇到了问题。我已经尝试删除空格，并且错误仍然存​​在。

SELECT COUNT(payment) FROM paymentType
GROUP BY payment 
ORDER BY  COUNT (payment) DESC
LIMIT 1;

我正在尝试在表payment中找到最常见的paymentType条目。

Answer 1

也许是这样？

select *
from (
  select payment, count(*) as c from paymentType group by payment
) x
order by c desc
limit 1

Answer 2

如果您想要最常用的付款方式，那么我想您想要的是：

SELECT payment
FROM paymentType
GROUP BY payment 
ORDER BY COUNT(*) DESC
LIMIT 1;

Answer 3

这将起作用：

SELECT Count(payment),payment FROM paymentType
GROUP BY payment 
ORDER BY  COUNT DESC
LIMIT 1;

注意：您将在COUNT函数之后获得的列将是一个新列...而且它必须有一个名称-因此SQL自动将其命名为“ count”（请查看上面的最新屏幕截图）。当您在ORDER BY子句中引用此列时，必须使用这个新名称