请用通俗易懂的英语解释这个SQL查询回答了什么问题:
SELECT SUM(price) FROM Room r, Hotel h
WHERE r.hotelNo = h.hotelNo and hotelName = 'Paris Hilton' and
roomNo NOT IN
(SELECT roomNo FROM Booking b, Hotel h
WHERE (dateFrom <= CURRENT_DATE AND
dateTo >= CURRENT_DATE) AND
b.hotelNo = h.hotelNo AND hotelName =
我正试图在Windows8.1上为web开发设置Vagrant。我已经遇到了问题,所以我使用Vagrant1.7.4和Chef12.3.0。
我无法解决这个错误:
ERROR: You must specify at least one cookbook repo path
发自:
c:\web\project>vagrant provision
==> default: The cookbook path 'c:/web/project/cookbooks' doesn't exist. Ignoring...
==> default: The co