从事 p学项目。 我需要做(Query)报告,向一家旅馆的头版提供一张客人名单,这些客人在本日前9个月从Kumkite数据库的一张桌上留在旅馆。 我无法知道,获得过去9个月数据的条件是什么?
BTW 数据库是LQite3。
任何帮助都将是巨大的。
预先感谢
如果不给你答案(因为你需要做一些工作),那就应当让你成为起点。
SELECT * FROM GuestInfo
WHERE ArrivalDate >= (Today s date - your definition of 9 months before today)
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