Question

这可能是去年，但我使用的是SQL Server 2005

stmpdate      intime
----------------------
2014-10-08   08:04:43
2014-10-09   07:57:13
2014-10-10   07:57:14
2014-10-16   07:79:56
2014-10-17   07:45:56

我有这张桌子。它保留了员工的入住时间，但该员工每月都没有办理登机手续。所以我希望它是这样的

    stmpdate    intime
1   2014-10-01  
2   2014-10-02  
3   2014-10-03  
4   2014-10-04  
5   2014-10-05  
6   2014-10-06  
7   2014-10-07  
8   2014-10-08  08:04:43
9   2014-10-09  07:57:13
10  2014-10-10  07:57:14
11  2014-10-11  
12  2014-10-12  
13  2014-10-13  
14  2014-10-14  
15  2014-10-15  
16  2014-10-16  07:59:56
17  2014-10-17  07:45:56
18  2014-10-18  
19  2014-10-19  
20  2014-10-20  
21  2014-10-21  
22  2014-10-22  
23  2014-10-23  
24  2014-10-24  
25  2014-10-25  
26  2014-10-26  
27  2014-10-27  
28  2014-10-28  
29  2014-10-29  
30  2014-10-30  
31  2014-10-31

我试图创建一个包含该月份中每个日期的临时表，然后将其与我提到的第一个表连接起来，但它似乎不起作用。

declare @datetemp table (
stmpdate varchar(10)
);
insert into @datetemp 
SELECT '2014-10-01'
UNION ALL
SELECT '2014-10-02'
UNION ALL
SELECT '2014-10-03'
....

和

SELECT dtt.stmpdate, intime
FROM @datetemp dtt left join v_dayTimesheet
on dtt.stmpdate=v_dayTimesheet.stmpdate
WHERE (emp_no = '001234567')

这是上面查询的结果

stmpdate    intime
2014-10-08  08:04:43
2014-10-09  07:57:13
2014-10-10  07:57:14
2014-10-16  07:59:56
2014-10-17  07:45:56

这是select * from @datetemp

的结果

Answer 1

您仅在emp_no具有值的位置进行过滤。如果他们没有办理登机手续，由于您只有日期信息而没有员工编号，因此不会在该行上返回。所以你必须允许等于或为空。

SELECT  dtt.stmpdate, intime

FROM    @datetemp dtt 

        left outer join v_dayTimesheet
           on dtt.stmpdate=v_dayTimesheet.stmpdate

WHERE   emp_no = '001234567' or emp_no is null

另外，对于您的日期...请查看：http://www.sqlservercurry.com/2010/03/generate-start-and-end-date-range-using.html

DECLARE
@StartDate datetime = '2010-01-01',
@EndDate   datetime = '2010-03-01'

;WITH datetemp as
(
       SELECT @StartDate as stmpdate
       UNION ALL
       SELECT DATEADD(day, 1, stmpdate)
       FROM   datetemp 
       WHERE  DATEADD(day, 1, stmpdate) <= @EndDate    
)

SELECT stmpdate   
FROM   datetemp;

然后，您将从datetemp中选择一个普通表格。但要注意，公共表表达式只能在with语句之后立即使用一次。

请相信我这个...运行此查询，看看你的空白行是如何出现的：

SELECT  dtt.stmpdate, intime, emp_no 

FROM    @datetemp dtt 

        left outer join v_dayTimesheet
           on dtt.stmpdate=v_dayTimesheet.stmpdate

WHERE   emp_no = '001234567' or emp_no is null

所有这些行都将返回emp_no = 001234567

stmpdate    intime
2014-10-08  08:04:43
2014-10-09  07:57:13
2014-10-10  07:57:14
2014-10-16  07:59:56
2014-10-17  07:45:56

并且所有空白行的空值为emp_no。

Answer 2

我得到了答案!!

SELECT dtt.stmpdate, intime
FROM @datetemp dtt left join 
(
    SELECT stmpdate, intime
    FROM v_dayTimesheet 
    WHERE (emp_no = '001234567') 
) as vdayTimesheet
 on sparedate.stmpdate=vdayTimesheet.stampdate
ORDER BY stmpdate

这就是我想要的，谢谢大家

Answer 3

SQL查询：的 SQLFIDDLEExample

SELECT t2.dt, isnull(t1.intime, '') intime FROM ( SELECT DATEADD(day,number,'2014-10-01') dt FROM master..spt_values WHERE Type = 'P' AND DATEADD(day,number,'2014-10-01') >= '2014-10-01' AND DATEADD(day,number,'2014-10-01') < '2014-11-01' ) t2 LEFT JOIN Table1 t1 ON t1.stmpdate = t2.dt

结果：

| DT | INTIME | |--------------------------------|----------| | October, 01 2014 00:00:00+0000 | | | October, 02 2014 00:00:00+0000 | | | October, 03 2014 00:00:00+0000 | | | October, 04 2014 00:00:00+0000 | | | October, 05 2014 00:00:00+0000 | | | October, 06 2014 00:00:00+0000 | | | October, 07 2014 00:00:00+0000 | | | October, 08 2014 00:00:00+0000 | 08:04:43 | | October, 09 2014 00:00:00+0000 | 07:57:13 | | October, 10 2014 00:00:00+0000 | 07:57:14 | | October, 11 2014 00:00:00+0000 | | | October, 12 2014 00:00:00+0000 | | | October, 13 2014 00:00:00+0000 | | | October, 14 2014 00:00:00+0000 | | | October, 15 2014 00:00:00+0000 | | | October, 16 2014 00:00:00+0000 | 07:79:56 | | October, 17 2014 00:00:00+0000 | 07:45:56 | | October, 18 2014 00:00:00+0000 | | | October, 19 2014 00:00:00+0000 | | | October, 20 2014 00:00:00+0000 | | | October, 21 2014 00:00:00+0000 | | | October, 22 2014 00:00:00+0000 | | | October, 23 2014 00:00:00+0000 | | | October, 24 2014 00:00:00+0000 | | | October, 25 2014 00:00:00+0000 | | | October, 26 2014 00:00:00+0000 | | | October, 27 2014 00:00:00+0000 | | | October, 28 2014 00:00:00+0000 | | | October, 29 2014 00:00:00+0000 | | | October, 30 2014 00:00:00+0000 | | | October, 31 2014 00:00:00+0000 | |

SQL Server：在查询中插入空行

3 个答案: