同一选择查询

Question

我想知道是否可以计算同一查询中查询产生的记录？

SELECT HousesForRent.City
FROM HousesForRent
WHERE rooms >= 7

SELECT COUNT(rooms) AS seven_or_More
FROM HousesForRent
WHERE rooms >= 7; 

我只是设法在另一个SELECT查询中创建它。

Answer 1

是的，有可能，您只需要使用OVER子句：

SELECT  HousesForRent.City, COUNT(*) OVER() Total
FROM    HousesForRent
WHERE   (rooms >=7 );