MySQL嵌套查詢語句

時間 2019-11-22

標籤 mysql 嵌套查詢語句欄目 MySQL 简体版

原文原文鏈接

MySQL嵌套查詢語句統計每一個省的人口最多的與最少的城市ide

SELECT District,NAME,Population FROM city WHERE Population IN (SELECT MIN(Population) FROM city 
WHERE city.CountryCode='CHN'
GROUP BY city.District)
UNION
SELECT District,NAME,Population FROM city WHERE Population IN (SELECT MAX(Population) FROM city 
WHERE city.CountryCode='CHN'
GROUP BY city.District)