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sql server query?

Posted on 2016-11-15
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Last Modified: 2016-11-16
Why am I not picking up '2016-10-29' in this query


Declare @StartDt date
Declare @EndDt date
Set @StartDt  = '2016-10-08'


--print @StartDt

Set @EndDt = '2016-11-02'

WHILE @StartDt <= @EndDt
BEGIN

SELECT
CONVERT(INTEGER, CONVERT(CHAR(10),  (DATEADD(wk, 0, DATEADD(DAY, 0-DATEPART(WEEKDAY, @StartDt), DATEDIFF(dd, 0, @StartDt)))), 112)) AS YTDDateKey,
YEAR((DATEADD(wk, 0, DATEADD(DAY, 0-DATEPART(WEEKDAY, @StartDt), DATEDIFF(dd, 0, @StartDt))))) AS [Year],
(DATEADD(wk, 0, DATEADD(DAY, 0-DATEPART(WEEKDAY, @StartDt), DATEDIFF(dd, 0, @StartDt)))) as SatYTDDt, LoadDttm = getdate()



SET @StartDt = DATEADD(dd, 7, @StartDt)
END
0
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Question by:elucero
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6 Comments
 
LVL 52

Expert Comment

by:Ryan Chong
ID: 41888955
Why am I not picking up '2016-10-29' in this query
you are...

Declare @StartDt date
Declare @EndDt date
Set @StartDt  = '2016-10-08'
Set @EndDt = '2016-11-02'

WHILE @StartDt <= @EndDt
BEGIN

print @StartDt 

SET @StartDt = DATEADD(dd, 7, @StartDt)
END 

Open in new window


you are getting the output such as:
2016-10-08
2016-10-15
2016-10-22
2016-10-29

Open in new window


For the query:
SELECT
CONVERT(INTEGER, CONVERT(CHAR(10),  (DATEADD(wk, 0, DATEADD(DAY, 0-DATEPART(WEEKDAY, @StartDt), DATEDIFF(dd, 0, @StartDt)))), 112)) AS YTDDateKey,
YEAR((DATEADD(wk, 0, DATEADD(DAY, 0-DATEPART(WEEKDAY, @StartDt), DATEDIFF(dd, 0, @StartDt))))) AS [Year],
(DATEADD(wk, 0, DATEADD(DAY, 0-DATEPART(WEEKDAY, @StartDt), DATEDIFF(dd, 0, @StartDt)))) as SatYTDDt, LoadDttm = getdate()

Open in new window

can you tell us what you intend to get here?
0
 
LVL 66

Expert Comment

by:Jim Horn
ID: 41888957
When I run your code on my SQL 2012 box @startdt='2016-10-08' is the first @startdt processed, but YTDDateKey=20161001.  

It would probably help if you could add some details as to what you're trying to accomplish here.
20161008.png
0
 
LVL 29

Accepted Solution

by:
Pawan Kumar earned 500 total points
ID: 41889005
try..Can you tell me the purpose of (DATEADD(wk, 0, DATEADD(DAY, 0-DATEPART(WEEKDAY, @StartDt), DATEDIFF(dd, 0, @StartDt)))) as SatYTDDt

I have modified all your columns. Now it is picking  '2016-10-29'  

Other than this I think you need below.. please check?

Declare @StartDt date 
Declare @EndDt date
Set @StartDt  = '2016-10-08'
Set @EndDt = '2016-11-02'

WHILE @StartDt <= @EndDt 
BEGIN

PRINT @StartDt

SELECT
CONCAT(YEAR(@StartDt), RIGHT(CONCAT('0', MONTH(@StartDt)),2), RIGHT(CONCAT('0', DAY(@StartDt)),2))AS YTDDateKey,
CAST(@StartDt AS DATETIME) AS [Year],
(DATEADD(wk, 0, DATEADD(DAY, 0-DATEPART(WEEKDAY, @StartDt), DATEDIFF(dd, 0, @StartDt)))) as SatYTDDt
, LoadDttm = getdate()

SET @StartDt = DATEADD(dd, 7, @StartDt)

END

Open in new window


Output


2016-10-08
YTDDateKey       Year                    SatYTDDt                LoadDttm
---------------- ----------------------- ----------------------- -----------------------
20161008         2016-10-08 00:00:00.000 2016-10-01 00:00:00.000 2016-11-16 07:59:01.773

(1 row(s) affected)

2016-10-15
YTDDateKey       Year                    SatYTDDt                LoadDttm
---------------- ----------------------- ----------------------- -----------------------
20161015         2016-10-15 00:00:00.000 2016-10-08 00:00:00.000 2016-11-16 07:59:01.773

(1 row(s) affected)

2016-10-22
YTDDateKey       Year                    SatYTDDt                LoadDttm
---------------- ----------------------- ----------------------- -----------------------
20161022         2016-10-22 00:00:00.000 2016-10-15 00:00:00.000 2016-11-16 07:59:01.773

(1 row(s) affected)

2016-10-29
YTDDateKey       Year                    SatYTDDt                LoadDttm
---------------- ----------------------- ----------------------- -----------------------
20161029         2016-10-29 00:00:00.000 2016-10-22 00:00:00.000 2016-11-16 07:59:01.773

(1 row(s) affected)
0
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LVL 11

Expert Comment

by:HuaMinChen
ID: 41889195
Try
Declare @StartDt date 
Declare @EndDt date
Set @StartDt  = '2016-10-01'


--print @StartDt

Set @EndDt = '2016-11-02'

WHILE @StartDt <= @EndDt 
BEGIN
SET @StartDt = DATEADD(dd, 7, @StartDt)

SELECT
CONVERT(INTEGER, CONVERT(CHAR(10),  (DATEADD(wk, 0, DATEADD(DAY, 0-DATEPART(WEEKDAY, @StartDt), DATEDIFF(dd, 0, @StartDt)))), 112)) AS YTDDateKey,
YEAR((DATEADD(wk, 0, DATEADD(DAY, 0-DATEPART(WEEKDAY, @StartDt), DATEDIFF(dd, 0, @StartDt))))) AS [Year],
(DATEADD(wk, 0, DATEADD(DAY, 0-DATEPART(WEEKDAY, @StartDt), DATEDIFF(dd, 0, @StartDt)))) as SatYTDDt, LoadDttm = getdate()



END

Open in new window

0
 
LVL 50

Expert Comment

by:Vitor Montalvão
ID: 41889294
Why am I not picking up '2016-10-29' in this query
Tell us what you want to do with the query.

What's actually doing is processing the last week based in the current day and that's why '2016-10-29' isn't returned. When '2016-10-29' it's processing '2016-10-22' (one week before).
0
 

Author Closing Comment

by:elucero
ID: 41890095
Thanks!
0

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