根据日期时间加入表

Question

根据日期时间加入两个表格

CREATE Table A
(StartDate DATETIME, 
EndDate DATETIME,
Name VARCHAR(50))

CREATE Table B
(FromDate DATETIME, 
ToDate DATETIME,
Product VARCHAR(50),
Price VARCHAR(50))

INSERT INTO A values ('05/20/2014 10:00:00', '05/20/2014 14:00:00', 'Stalin')
INSERT INTO A values ('05/20/2014 14:02:00', '05/20/2014 18:03:00', 'Vipin')
INSERT INTO A values ('05/20/2014 18:10:00', '05/20/2014 23:04:00', 'Raju')


INSERT INTO B values ('05/20/2014 10:01:00', '05/20/2014 14:01:00', 'Pen', '20')
INSERT INTO B values ('05/20/2014 14:02:33', '05/20/2014 18:03:58', 'Pensil', '22')
INSERT INTO B values ('05/20/2014 18:11:00', '05/20/2014 23:05:00', 'Book','33')

结果应为

StartDate           EndDate            FromDate        ToDate           Product    Price    Name
5/20/2014 10:00 | 5/20/2014 14:00 | 5/20/2014 10:01 | 5/20/2014 14:01 | Pen      |   20   | Stalin
5/20/2014 14:02 | 5/20/2014 18:03 | 5/20/2014 14:02 | 5/20/2014 18:03 | Pensil   |   22   | Vipin
5/20/2014 18:10 | 5/20/2014 23:04 | 5/20/2014 18:11 | 5/20/2014 23:05 | Book     |   33   | Raju

我正在尝试以下查询

Select A.StartDate,a.EndDate, b.FromDate, b.ToDate, b.Product,b.Price,a.Name 
from a
Join B 
ON A.StartDate BETWEEN DATEADD(MM,-2,B.FromDate) 
AND DATEADD(MM,2,B.ToDate)

结果不符合预期，有什么帮助吗？

Answer 1

所有日期都在2个月之内。我假设你真的想要分钟。试试这个：

Select A.StartDate,a.EndDate, b.FromDate, b.ToDate, b.Product, b.Price,a.Name
from a Join
     B
     ON A.StartDate BETWEEN DATEADD(minute,-2,B.FromDate) AND DATEADD(minute,2,B.ToDate);

Here是有效日期部分的列表。

使用dateadd()和datepart()等功能时，请使用本机的全名。没有理由使用缩写。即使您认为自己知道MM的含义，也可能不会有其他人阅读您的代码。

Answer 2

希望这就是你要找的东西

SELECT  A.StartDate,
        A.EndDate,
        B.FromDate,
        B.ToDate,
        B.Product,
        B.Price,
        A.Name
FROM    A
JOIN    B ON DATEPART(HH,A.StartDate) = DATEPART(HH,B.FromDate)
AND     CAST(A.StartDate AS DATE) = CAST(B.FromDate AS DATE)

获得结果