SQL QUERY WITH HAVING，统计至少 100 个国家

Question

这是任务：

有多少国家 (COUNTRY) 在 Netflix 上拥有至少 100 个连续剧（TYPE = 'TV Show'）？因此，仅显示与条目匹配的国家（使用 HAVING）。

我的代码：

SELECT SPLIT_PART(COUNTRY,',',1), COUNT (*)
FROM NETFLIX_TITLES
GROUP BY SPLIT_PART(COUNTRY,',',1)
HAVING TYPE = 'TV Show' AND COUNT(TYPE) >= 100
ORDER BY COUNT(*) DESC;

它给了我这个错误：SQL 编译错误：[NETFLIX_TITLES.TYPE] is not a valid group by expression。

我应该如何重做这个查询？

Answer 1

对于COUNT(TYPE)，您只需要HAVING。改用WHERE 过滤 type = 'TV Show'：

SELECT SPLIT_PART(COUNTRY,',',1), COUNT (*)
FROM NETFLIX_TITLES
WHERE TYPE = 'TV Show'
GROUP BY SPLIT_PART(COUNTRY,',',1)
HAVING COUNT(TYPE) >= 100
ORDER BY COUNT() DESC;