我如何找到一个房间avilabilty从followind数据库

Question

表房间预订

CREATE TABLE [dbo].[Rooms] 
( 
    [room_no] [varchar](5) NOT NULL, 
    [cust_id] [varchar](5) NOT NULL, 
    [check_in_date] [datetime] NOT NULL, 
    [check_out_date] [datetime] NOT NULL, 
    [no_of_rooms] [int] NOT NULL, 
    [no_of_members] [int] NOT NULL, 
    [room_type] [varchar](15) NOT NULL, 
    [room_status] [varchar](50) NOT NULL, 
) 

Answer 1

查询：

declare @dateforbooking datetime 
declare @room_no varchar 

set @dateforbooking = '2012-02-26 11:00' 
set @room_no = 1 

select 
    * 
from rooms 
where 
    room_no = @room_no 
    and @dateforbooking between check_in_date and check_out_date 

的@room_no VAR表明你之后所在的房间号，@dateforbooking是您希望预订房间的日期时间，如果房间已预订，则查询将返回预订行，如果在那段时间没有预订房间，则预订将为空。