此SQL語句在語法上有錯誤嗎？

Question

我不斷收到的時候我嘗試在mysqlite3運行此查詢時出現錯誤：

SELECT Region_DESC, AgeGroup, Population 
(select REGION, sum(POPULATION) as Population, '0-15' AS AgeGroup 
from STATS 
Where Age between 0 and 15 
group by REGION 
union 
Select REGION, SUM(POPULATION) as Population, '16-30' As AgeGroup 
from STATUS 
Where Age between 16 and 30 
group by REGION) s 
join REGION on REGION_CD = REGION 

，我發現了以下錯誤： 錯誤：附近的「選擇」：語法錯誤

這有什麼錯查詢，語法明智？

Answer 1

你錯過了FROM之後的詞'人口'。

Answer 2

您的查詢是錯誤的。您主要有：

SELECT something 
(select somethingelse FROM somethingelsetable) s 
join REGION on REGION_CD = REGION 

我猜你缺少從括號前...

Answer 3

不正確的查詢......在第一行缺少FROM子句。