根据另一个时间间隔更新表。 SQL Server

Question

我需要计算每小时有多少人在工作。我有两个表：

Hour  Men 
------------ 
6  0 
7  0 
8  0 
9  0 
10  0 
11  0 
12  0 

其中"Men"列是男性的数量。另一个表是：

ClockedInHour  ClockedOutHour 
6     10 
7     10 
8     12 
6     11 
9     12 

所以在第二个表中的每个条目，我需要增加在第一个表"Men"列"ClockedInHour"和"ClockedOutHour"包括那些在表之间每隔一小时，而且，如果可能的话，做它没有光标。

附加条件：它将成为表值函数的一部分。

在此先感谢您的帮助。

Answer 1

解决了！

DECLARE @Hour6 INT 
SET @Hour6 = (SELECT COUNT(*) FROM @table2 where ClockedOutHour >= 6 and ClockedInHour <= 6) 
DECLARE @Hour7 INT 
SET @Hour7 = (SELECT COUNT(*) FROM @table2 where ClockedOutHour >= 7 and ClockedInHour <= 7) 
DECLARE @Hour8 INT 
SET @Hour8 = (SELECT COUNT(*) FROM @table2 where ClockedOutHour >= 8 and ClockedInHour <= 8) 
DECLARE @Hour9 INT 
SET @Hour9 = (SELECT COUNT(*) FROM @table2 where ClockedOutHour >= 9 and ClockedInHour <= 9) 
DECLARE @Hour10 INT 
SET @Hour10 = (SELECT COUNT(*) FROM @table2 where ClockedOutHour >= 10 and ClockedInHour <= 10) 
DECLARE @Hour11 INT 
SET @Hour11 = (SELECT COUNT(*) FROM @table2 where ClockedOutHour >= 11 and ClockedInHour <= 11) 
DECLARE @Hour12 INT 
SET @Hour12 = (SELECT COUNT(*) FROM @tc where ClockedOutHour >= 12 and ClockedInHour <= 12) 

UPDATE @table1 SET Man = @Hour6 WHERE Hour = 6 
UPDATE @table1 SET Man = @Hour7 WHERE Hour = 7 
UPDATE @table1 SET Man = @Hour8 WHERE Hour = 8 
UPDATE @table1 SET Man = @Hour9 WHERE Hour = 9 
UPDATE @table1 SET Man = @Hour10 WHERE Hour = 10 
UPDATE @table1 SET Man = @Hour11 WHERE Hour = 11 
UPDATE @table1 SET Man = @Hour12 WHERE Hour = 12 

Answer 2

您可以使用插入触发器为做到这一点：

Go --terminate all preceding batch of statements 

CREATE TRIGGER tg_MenCount ON dbo.table2 For INSERT 
AS 
SET XACT_ABORT, NOCOUNT ON 
--Ignore zero row updates, inserts 
IF NOT EXISTS (SELECT * FROM INSERTED) RETURN; 

BEGIN TRY 
    UPDATE T1 
    set T1.men = T1.men +1 
    FROM 
     table1 T1 
     INNER JOIN INSERTED I 
     ON T1.hour between I.ClockedInHour and I.ClockedOutHour 
END TRY 
BEGIN CATCH 
    IF XACT_STATE() <> 0 ROLLBACK TRANSACTION 
    --RAISERROR [rethrow caught error using @ErrorNumber, @ErrorMessage, etc] 
END CATCH 
GO