Question

我有桌子，即 BookingDetails 。 BookingDetails包含以下字段。

客户id

DateFrom

DateTo

TimeFrom

TimeTo

BookingDetails 包含n条记录。

CustomerID    DateFrom     DateTo       TimeFrom    TimeTo
11137         2012-08-14   2012-08-16   00:33:46    03:33:46
11138         2012-08-15   2012-08-17   08:00:00    00:31:03
11139         2012-08-16   2012-08-17   22:46:25    00:46:25

我想在给定信息 DateFrom ， DateTo ， TimeFrom ， TimeTo 之间选择记录。

我做了以下查询

declare @fDate date
set @fDate = '2012-08-14' 

declare @tDate date
set @tDate = '2012-08-16'

declare @fTime time
set @fTime ='12:33:46 AM'

declare @tTime time
set @tTime='12:31:03 AM'

SELECT BookingDetails.CustomerID
FROM BookingDetails 
WHERE  (DateFrom between @fDate and @tDate) And (BookingDetails.DateFrom >= @fDate     and BookingDetails.DateTo<=@tDate)
and(TimeFrom between CONVERT(varchar(15),cast(@fTime as time) , 108) and CONVERT(varchar(15),cast(@tTime as time) , 108))
and (TimeFrom >=CONVERT(varchar(15),cast(@fTime as time) , 108) and TimeTo <=CONVERT(varchar(15),cast(@tTime as time) , 108))

数据库中的时间保存为24小时格式。查询中使用的时间是12小时格式，这就是我在查询中将其转换为24小时格式的原因。

此查询是正确的还是我必须更改它？

此查询不返回任何值。我想在 @fDate ， @tDate ， @fTime ， @tTime

之间选择记录

我期待前两个customerID的结果，即11137,11138

Answer 1

为什么不将开始和结束作为DATETIME而不是作为单独的值传递？实际上，为什么在明确这些是时间点的时候分别存储DATE和TIME，这两个值比分开更重要？无论如何，根据当前架构，您需要停止转换为字符串。试试这个：

DECLARE @b TABLE (  
   CustomerID INT,
   DateFrom DATE,
   DateTo DATE,
   TimeFrom TIME,
   TimeTo TIME 
);

INSERT @b VALUES (11137,'2012-08-14','2012-08-16','00:33:46','03:33:46'),
                 (11138,'2012-08-15','2012-08-17','08:00:00','00:31:03'),
                 (11139,'2012-08-16','2012-08-17','22:46:25','00:46:25');

declare @fDate date
set @fDate = '2012-08-14' 

declare @tDate date
set @tDate = '2012-08-16'

declare @fTime time
set @fTime ='12:33:46 AM'

declare @tTime time
set @tTime='12:31:03 AM'

;WITH x AS 
(
  SELECT 
    CustomerID, DateFrom, TimeFrom, DateTo, TimeTo,
    [Start] = DATEADD(SECOND, DATEDIFF(SECOND,'00:00',TimeFrom), 
              CONVERT(DATETIME, DateFrom)),
    [End]   = DATEADD(SECOND, DATEDIFF(SECOND,'00:00',TimeTo),   
              CONVERT(DATETIME, DateTo))
  FROM @b
)
SELECT * FROM x WHERE [Start] 
  BETWEEN     CONVERT(DATETIME, @fDate) + CONVERT(DATETIME, @fTime)
          AND CONVERT(DATETIME, @tDate) + CONVERT(DATETIME, @tTime);

两个日期和时间之间的SQL检查记录

1 个答案: