MySQL:返回COUNT(*)大于的字段

Question

我有以下SQL,但我只想返回'hits'大于10的行.

SELECT clicks.affiliate, COUNT(*) AS hits, affiliates.title, affiliates.url
FROM clicks
INNER JOIN affiliates ON affiliates.id = clicks.affiliate
GROUP BY clicks.affiliate

谢谢.

Answer 1

要按聚合过滤,您需要使用该having子句.与许多RDBMS不同,MySQL确实允许您在此上下文中使用列别名(大多数其他RDBMS也会坚持将affiliates.title, affiliates.url其添加到group by子句中)

SELECT clicks.affiliate, COUNT(*) AS hits, affiliates.title, affiliates.url
FROM clicks
INNER JOIN affiliates ON affiliates.id = clicks.affiliate
GROUP BY clicks.affiliate
HAVING hits > 10