Sql 根据当前日期和配置的数据获取记录

我正在致力于在我的web应用程序中实现短信发送部分的自动化

DurationType表存储是否应以小时、天、周、月为间隔发送sms。在SMS配置中引用

CREATE TABLE [dbo].[DurationType](
[Id] [int] NOT NULL PRIMARY KEY,
[DurationType] VARCHAR(10) NOT NULL
)

预订表格包含原始预订数据。对于本次预订，我需要根据配置发送短信

短信配置。它定义了发送自动SMS的配置。它可以在之前/之后发送。之前=0，之后=1<代码>持续时间类型可以是小时=1，天=2，周=3，月=4

现在我需要根据SMS配置集找出当前需要发送SMS的预订列表

尝试使用UNION执行SQL

DECLARE @currentTime smalldatetime = '2014-07-12 11:15:00'


-- 'SMS CONFIGURED FOR HOURS BASIS'

SELECT  B.Id AS BookingId, 
        B.StartTime AS BookingStartTime,@currentTime As CurrentTime,  SMS.SMSText
FROM    Bookings B INNER JOIN
        SMSConfiguration SMS ON SMS.CategoryId = B.CategoryId OR SMS.CategoryId IS NULL
WHERE   (DATEDIFF(HOUR, @currentTime, B.StartTime) = SMS.Duration AND SMS.DurationType=1 AND BeforeAfter=0)
        OR
        (DATEDIFF(HOUR, B.StartTime, @currentTime) = SMS.Duration AND SMS.DurationType=1 AND BeforeAfter=1)


--'SMS CONFIGURED FOR DAYS BASIS'

UNION

SELECT  B.Id AS BookingId, 
        B.StartTime AS BookingStartTime,@currentTime As CurrentTime,  SMS.SMSText
FROM    Bookings B INNER JOIN
        SMSConfiguration SMS ON SMS.CategoryId = B.CategoryId OR SMS.CategoryId IS NULL
WHERE (DATEDIFF(DAY, @currentTime, B.StartTime) = SMS.Duration AND SMS.DurationType=2 AND BeforeAfter=0)
        OR
      (DATEDIFF(DAY, B.StartTime, @currentTime) = SMS.Duration AND SMS.DurationType=2 AND BeforeAfter=1)
--'SMS CONFIGURED FOR WEEKS BASIS'

UNION

SELECT  B.Id AS BookingId, 
        B.StartTime AS BookingStartTime, @currentTime As CurrentTime, SMS.SMSText
FROM    Bookings B INNER JOIN
        SMSConfiguration SMS ON SMS.CategoryId = B.CategoryId OR SMS.CategoryId IS NULL
WHERE (DATEDIFF(DAY, @currentTime, B.StartTime)/7 = SMS.Duration AND SMS.DurationType=3 AND BeforeAfter=0)
        OR
      (DATEDIFF(DAY, B.StartTime, @currentTime)/7 = SMS.Duration AND SMS.DurationType=3 AND BeforeAfter=1)
--'SMS CONFIGURED FOR MONTHS BASIS'

UNION

SELECT  B.Id AS BookingId, 
        B.StartTime AS BookingStartTime, @currentTime As CurrentTime, SMS.SMSText
FROM    Bookings B INNER JOIN
        SMSConfiguration SMS ON SMS.CategoryId = B.CategoryId OR SMS.CategoryId IS NULL
WHERE   (dbo.FullMonthsSeparation(@currentTime, B.StartTime) = SMS.Duration AND SMS.DurationType=4 AND BeforeAfter=0)
         OR
        (dbo.FullMonthsSeparation(B.StartTime, @currentTime) = SMS.Duration AND SMS.DurationType=4 AND BeforeAfter=1)

结果

问题：

SQL过程将每15分钟运行一次。当前查询即使在当前时间“2014-07-12 11:30:00”、“2014-07-12 11:45:00”等，也会继续返回天/周/月记录

我想要一个能够处理所有小时/天/周/月的查询 计算和我应该得到记录只有一次，当他们满足 正确的时间。否则我会一次又一次地发短信 匹配的日/周/月记录每15分钟一次

应考虑以下情况：

小时，如果预订时间为当天上午10:15，如果预订时间在1小时之前，则为当天上午9:15

天（24小时差异），如果预订时间为上午10:15第三天上午10:15，如果在SMS配置中配置为3天后

CREATE TABLE [dbo].[DurationType](
[Id] [int] NOT NULL PRIMARY KEY,
[DurationType] VARCHAR(10) NOT NULL
)

比赛周。如果预订时间为今天（星期三）上午10:15，那么如果在两周后配置，则在14天后的上午10:15

月份的逻辑也和上面一样

---

您似乎忘记了选择一些要返回的列

DECLARE @currentTime smalldatetime = '2014-07-12 09:15:00'; 

SELECT [col1], [col2], [etcetera]
FROM

Bookings B
INNER JOIN SMSConfiguration SMS ON SMS.CategoryId=B.CategoryId
WHERE DATEDIFF(hour,B.StartTime,@currentTime)=1

---

只需在DATEDIFF函数中交换日期即可

将日期差异（小时，B.StartTime，@currentTime）更改为日期差异（小时，B.StartTime）-仅限小时

因为你的一个返回值为负值（-1）

这很有效

DECLARE @currentTime smalldatetime
set @currentTime= '2014-07-12 09:15:00'



SELECT B.CategoryId FROM
Bookings B
INNER JOIN SMSConfiguration SMS ON SMS.CategoryId=B.CategoryId
WHERE DATEDIFF(hh,B.StartTime,@currentTime)=1

您的sql小提琴中有两个问题

1） 您没有设置

currentTime

2） select语句中有列

---

注意：我将

B.CategoryId

列作为获取记录的列之一，您可以根据需要更改它

您可以使用嵌套的CASE表达式在单个查询中获得结果。请试试这个

    DECLARE @currentTime smalldatetime = '2014-07-12 11:15:00'





    SELECT  B.Id AS BookingId,
    SMS.Duration,
    B.StartTime AS BookingStartTime,
    @currentTime As CurrentTime,  
    SMS.SMSText
    FROM Bookings B INNER JOIN
    SMSConfiguration SMS 
    ON SMS.CategoryId = B.CategoryId 
    OR SMS.CategoryId IS NULL


    WHERE 
       SMS.Duration = 
       CASE 
       WHEN SMS.DurationType = 1 THEN  --'SMS CONFIGURED FOR HOURS BASIS'


           CASE WHEN BeforeAfter = 0 THEN 
                DATEDIFF(HOUR, @currentTime, B.StartTime)       
           ELSE 
                DATEDIFF(HOUR, B.StartTime, @currentTime)
           END 

       WHEN SMS.DurationType = 2 THEN  --'SMS CONFIGURED FOR DAY BASIS'


           CASE WHEN BeforeAfter = 0 THEN 
              DATEDIFF(DAY, @currentTime, B.StartTime)         
          ELSE 
              DATEDIFF(DAY, B.StartTime, @currentTime)
          END 

     WHEN SMS.DurationType = 3 THEN  --'SMS CONFIGURED FOR WEEK BASIS'


          CASE WHEN BeforeAfter = 0 THEN 
              DATEDIFF(DAY, @currentTime, B.StartTime)/7        
          ELSE 
              DATEDIFF(DAY, B.StartTime, @currentTime)/7 
          END 

      ELSE 
          CASE WHEN BeforeAfter = 0 THEN -- 'SMS CONFIGURED FOR MONTH BASIS'
              dbo.FullMonthsSeparation(@currentTime, B.StartTime)        
          ELSE 
              dbo.FullMonthsSeparation(B.StartTime, @currentTime) 
          END    

      END 

    ORDER BY BOOKINGID;

您可以在两个计划中实现自动化，一个用于获取每小时短信的预订详细信息，另一个用于获取每日/每周/每月预订详细信息。

尝试：

DECLARE @currentTime smalldatetime = '2014-07-12 09:15:00'

SELECT  B.Id AS BookingId, 
        B.StartTime AS BookingStartTime,  
        @currentTime CURRENT_DT,
        SMS.SMSText
FROM    Bookings B INNER JOIN
        SMSConfiguration SMS ON SMS.CategoryId = B.CategoryId OR SMS.CategoryId IS NULL
WHERE  (    SMS.DurationType = 1 
        AND @currentTime = DATEADD(HOUR, (2*SMS.BeforeAfter-1)*SMS.Duration, B.StartTime))
     OR 
       (    SMS.DurationType = 2
        AND @currentTime = DATEADD(DAY, (2*SMS.BeforeAfter-1)*SMS.Duration, B.StartTime))
     OR
       (    SMS.DurationType = 3
        AND @currentTime = DATEADD(WEEK, (2*SMS.BeforeAfter-1)*SMS.Duration, B.StartTime))
     OR
       (    SMS.DurationType = 4
        AND @currentTime = DATEADD(MONTH, (2*SMS.BeforeAfter-1)*SMS.Duration, B.StartTime))

2*SMS.BeforeAfter-1在（0）之前转换为-1，在（1）之后转换为1。因此，从BookingStartTime添加或减去时间

[编辑]

上述解决方案应按原样与您的数据模型配合使用。下面我建议通过更改数据模型来简化解决方案

选项1：元数据前后的更改

使用

Before=-1

和

After=1

代替

Before=0

和

After=1

。然后，这些可以用于更改任何日期偏移的方向

例如：

INSERT INTO [dbo].[SMSConfiguration]
           ([CategoryId],[SMSText],[BeforeAfter],[Duration],[DurationType],[IsActive])
     VALUES
           (1,'Before 1 hour',-1,1,1,1)-- 

INSERT INTO [dbo].[SMSConfiguration]
           ([CategoryId],[SMSText],[BeforeAfter],[Duration],[DurationType],[IsActive])
     VALUES
           (NULL,'After 1 hour (no category id))',1,1,1,1)

更新的查询：

DECLARE @currentTime smalldatetime = '2014-07-12 09:15:00'

SELECT  B.Id AS BookingId, 
        B.StartTime AS BookingStartTime,  
        @currentTime CURRENT_DT,
        SMS.SMSText
FROM    Bookings B INNER JOIN
        SMSConfiguration SMS ON SMS.CategoryId = B.CategoryId OR SMS.CategoryId IS NULL
WHERE  (    SMS.DurationType = 1 
        AND @currentTime = DATEADD(HOUR, SMS.BeforeAfter*SMS.Duration, B.StartTime))
     OR 
       (    SMS.DurationType = 2
        AND @currentTime = DATEADD(DAY, SMS.BeforeAfter*SMS.Duration, B.StartTime))
     OR
       (    SMS.DurationType = 3
        AND @currentTime = DATEADD(WEEK, SMS.BeforeAfter*SMS.Duration, B.StartTime))
     OR
       (    SMS.DurationType = 4
        AND @currentTime = DATEADD(MONTH, SMS.BeforeAfter*SMS.Duration, B.StartTime))

选项2：允许30天=1个月

在变更之前/之后，若30天的时间段足够表示一个月，则所有持续时间类型都可以转换为小时。问题是，您的客户对精度的要求有多高。如果你按照“三个月前”的规定休息一两天，我想你不会有太多抱怨

所以您的DurationType表可以如下所示

CREATE TABLE [dbo].[DurationType](
[Id] [int] NOT NULL PRIMARY KEY,
[DurationType] VARCHAR(10) NOT NULL,
[HourConversion] [int] NOT NULL
)
GO

INSERT INTO [dbo].[DurationType]([Id],[DurationType],[HourConversion])
       VALUES(1,'Hours',1)
INSERT INTO [dbo].[DurationType]([Id],[DurationType],[HourConversion])
       VALUES(2,'Days',24)
INSERT INTO [dbo].[DurationType]([Id],[DurationType],[HourConversion])
       VALUES(3,'Weeks',24*7)
INSERT INTO [dbo].[DurationType]([Id],[DurationType],[HourConversion])
       VALUES(4,'Months',24*30)

通过这些更改，可以将查询修改为：

DECLARE @currentTime smalldatetime = '2014-07-12 09:15:00'

SELECT  B.Id AS BookingId, 
        B.StartTime AS BookingStartTime,  
        @currentTime CURRENT_DT,
        SMS.SMSText
FROM    Bookings B 
INNER JOIN
        SMSConfiguration SMS ON SMS.CategoryId = B.CategoryId OR SMS.CategoryId IS NULL
INNER JOIN
        DurationType DT ON DT.Id = SMS.DurationType
WHERE  @currentTime = DATEADD(HOUR, SMS.BeforeAfter*SMS.Duration*DT.HourConversion, B.StartTime)

---

尝试简化版本，删除Union和used OR条件

列出小时数-每15分钟运行一次

DECLARE @currentTime smalldatetime = '2014-07-12 11:15:00'



SELECT  B.Id AS BookingId, C.Id, C.Name,
        B.StartTime AS BookingStartTime,@currentTime As CurrentTime,  SMS.SMSText
FROM    Bookings B INNER JOIN
        SMSConfiguration SMS ON SMS.CategoryId = B.CategoryId OR SMS.CategoryId IS NULL
        LEFT JOIN Category C ON C.Id=B.CategoryId
WHERE   
        (DATEDIFF(MINUTE, @currentTime, B.StartTime) = SMS.Duration*60 AND SMS.DurationType=1 AND BeforeAfter=0)
        OR
        (DATEDIFF(MINUTE, B.StartTime, @currentTime) = SMS.Duration*60 AND SMS.DurationType=1 AND BeforeAfter=1)

Order BY B.Id

GO

列出天/周/月-每天早上运行一次

DECLARE @currentTime smalldatetime = '2014-07-12 08:00:00'

SELECT  B.Id AS BookingId, C.Id, C.Name,
        B.StartTime AS BookingStartTime,@currentTime As CurrentTime,  SMS.SMSText
FROM    Bookings B INNER JOIN
        SMSConfiguration SMS ON SMS.CategoryId = B.CategoryId OR SMS.CategoryId IS NULL
        LEFT JOIN Category C ON C.Id=B.CategoryId
WHERE   
    (((DATEDIFF(DAY, @currentTime, B.StartTime) = SMS.Duration AND SMS.DurationType=2)
    OR (DATEDIFF(DAY, @currentTime, B.StartTime) = SMS.Duration*7 AND SMS.DurationType=3)
    OR (DATEDIFF(DAY, @currentTime, B.StartTime) = SMS.Duration*30 AND SMS.DurationType=4))
     AND BeforeAfter=0)

    OR
    (((DATEDIFF(DAY, B.StartTime, @currentTime) = SMS.Duration AND SMS.DurationType=2)
    OR (DATEDIFF(DAY, @currentTime, B.StartTime) = SMS.Duration*7 AND SMS.DurationType=3)
    OR (DATEDIFF(DAY, @currentTime, B.StartTime) = SMS.Duration*30 AND SMS.DurationType=4))
     AND BeforeAfter=1)

Order BY B.Id

---

很抱歉更新。我的实际问题是基于配置集检索数据。不要硬编码小时和值1ah，这样做更有意义；）您可以指定要查看的结果吗？在给定的fiddle链接中，我删除了终止字符（

；

），将错误的别名更改为SMS，并在DATEDIFF中交换日期。它工作得很好，但不起作用。我试图复制粘贴您的代码，但出现了错误

必须声明标量变量“@currentTime”

它只给出一条记录。在我的问题中看到我的预期结果。我需要基于天/周/月配置的其他记录：（已更新…请立即检查检查此项。您的回答是50%正确。但当我在SMS配置和预订表中添加一个条目时，它会显示更多记录。

结果中不应显示第2、4、5、8行，因为它们不符合标准。

谢谢。但仍然

第2行->不应显示，因为它有一个多小时（1天）

和

第5行->现在不应该显示。但是当@currentTime为2014-07-12 10:15:00时它会显示。希望您能满足我的要求。SQL过程将每15分钟运行一次，并找到匹配的记录，以发送带有预期结果的SMSUpdated my question。检查它。它不仅基于小时，还基于月/日对于一次预订，我可能可以发送多条短信。比如一个小时前、两个小时后、一个月后、三个月后等等。你认为这个逻辑行得通吗？我认为我的最新编辑应该行得通，但你需要更多的数据来彻底测试它。如果你在as-1之前和之后存储，可能会更好。这样你就不必做额外的计算了。S30天可以被考虑1个月吗？如果是的话，那么在所有的持续时间类型中存储时间为1小时＝1, 1天＝24, 1周＝24×7, 1月＝24×7×30。