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trying to create a table - unpivot Expand / Collapse
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Posted Tuesday, October 8, 2013 8:18 AM
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Hi ,

I am having problems understand the function unpivot on sql.
I have a query:
select RecordDay, ClickCount into #myclicks from dbo.clicks
where RecordDay >= getdate()-38


that the outcome will be (with the hours, minutes and seconds)
RecordDay ClickCount
8/31/2013 1
8/31/2013 1
8/31/2013 6
8/31/2013 1
8/31/2013 1
8/31/2013 1
8/31/2013 1
8/31/2013 1
8/31/2013 1
8/31/2013 1
8/31/2013 1
8/31/2013 1
8/31/2013 1
8/31/2013 1
8/31/2013 1
8/31/2013 2

I want to build from my temp table something that will look like this, where the measure will be the sum of ClickCount
RecordDay 8/31/2013 9/7/2013 9/14/2013 9/21/2013
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23

I know I will need to define on the columns
 datepart(weekday,getdate()) = datepart(weekday,datecreated) 


in order to get the same day of the week, and I imagine I will need to do a dateadd to group it by minutes on the rows.
But I am getting extremely lost here.
Help please
Post #1502639
Posted Tuesday, October 8, 2013 8:30 AM


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Your post is lacking any level of detail required for anybody to understand the problem, let alone the question. In order to help we will need a few things:

1. Sample DDL in the form of CREATE TABLE statements
2. Sample data in the form of INSERT INTO statements
3. Expected results based on the sample data

Please take a few minutes and read the first article in my signature for best practices when posting questions.


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Cross Tabs and Pivots, Part 1 – Converting Rows to Columns
Cross Tabs and Pivots, Part 2 - Dynamic Cross Tabs
Understanding and Using APPLY (Part 1)
Understanding and Using APPLY (Part 2)
Post #1502648
Posted Tuesday, October 8, 2013 8:45 AM
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hi,

please find the sample requested

CREATE TABLE clicks (RecordDay datetime, ClickCount INT)
GO
INSERT INTO clicks (RecordDay datetime, ClickCount INT)
VALUES(2013-10-05 13:23:44, 2)
INSERT INTO clicks (RecordDay datetime, ClickCount INT)
VALUES(2013-10-05 15:45:21, 6)
INSERT INTO clicks (RecordDay datetime, ClickCount INT)
VALUES(2013-10-05 16:45:21, 1)
INSERT INTO clicks (RecordDay datetime, ClickCount INT)
VALUES(2013-10-05 17:45:21, 12)
INSERT INTO clicks (RecordDay datetime, ClickCount INT)
VALUES(2013-10-04 18:45:21, 3)
INSERT INTO clicks (RecordDay datetime, ClickCount INT)
VALUES(2013-10-03 19:45:21, 24)
INSERT INTO clicks (RecordDay datetime, ClickCount INT)
VALUES(2013-11-02 20:45:21,3)

Post #1502657
Posted Tuesday, October 8, 2013 8:48 AM


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Excellent. Now what I don't understand is what do you want from this sample data?

_______________________________________________________________

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Read the article at http://www.sqlservercentral.com/articles/Best+Practices/61537/ for best practices on asking questions.

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Cross Tabs and Pivots, Part 1 – Converting Rows to Columns
Cross Tabs and Pivots, Part 2 - Dynamic Cross Tabs
Understanding and Using APPLY (Part 1)
Understanding and Using APPLY (Part 2)
Post #1502659
Posted Tuesday, October 8, 2013 8:50 AM


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For anybody else coming along here is the sample data in a format that is consumable.

CREATE TABLE clicks (RecordDay datetime, ClickCount INT)
GO
INSERT INTO clicks (RecordDay, ClickCount)
select '2013-10-05 13:23:44', 2 union all
select '2013-10-05 15:45:21', 6 union all
select '2013-10-05 16:45:21', 1 union all
select '2013-10-05 17:45:21', 12 union all
select '2013-10-04 18:45:21', 3 union all
select '2013-10-03 19:45:21', 24 union all
select '2013-11-02 20:45:21',3



_______________________________________________________________

Need help? Help us help you.

Read the article at http://www.sqlservercentral.com/articles/Best+Practices/61537/ for best practices on asking questions.

Need to split a string? Try Jeff Moden's splitter.

Cross Tabs and Pivots, Part 1 – Converting Rows to Columns
Cross Tabs and Pivots, Part 2 - Dynamic Cross Tabs
Understanding and Using APPLY (Part 1)
Understanding and Using APPLY (Part 2)
Post #1502661
Posted Tuesday, October 8, 2013 9:03 AM
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i am trying to get
on the columns the dates
on the rows the hours (from those dates)
and the sum of the clicks as a measure.

the same i gave has a few lines but the original table has over a million.

i will keep in mind your notes on how to post.

thanks for the help
Post #1502672
Posted Tuesday, October 8, 2013 9:28 AM


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astrid 69000 (10/8/2013)
i am trying to get
on the columns the dates
on the rows the hours (from those dates)
and the sum of the clicks as a measure.

the same i gave has a few lines but the original table has over a million.

i will keep in mind your notes on how to post.

thanks for the help


I am still a little bit confused as to what you want as output. Can you provide the details of your desired output based on the sample data you provided?


_______________________________________________________________

Need help? Help us help you.

Read the article at http://www.sqlservercentral.com/articles/Best+Practices/61537/ for best practices on asking questions.

Need to split a string? Try Jeff Moden's splitter.

Cross Tabs and Pivots, Part 1 – Converting Rows to Columns
Cross Tabs and Pivots, Part 2 - Dynamic Cross Tabs
Understanding and Using APPLY (Part 1)
Understanding and Using APPLY (Part 2)
Post #1502681
Posted Tuesday, October 8, 2013 9:37 AM


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Here's something for you to start with. To understand this method called CROSS TABS, you could visit this article: http://www.sqlservercentral.com/articles/T-SQL/63681/
To learn how to make it dynamic, use part 2: http://www.sqlservercentral.com/articles/Crosstab/65048/

WITH DayHours AS(
SELECT *
FROM (VALUES(1),(2),(3),(4),(5),(6),(7),(8),(9),(10),(11),(12),
(13),(14),(15),(16),(17),(18),(19),(20),(21),(22),(23),(0))x(ihour)
)
SELECT ihour,
SUM( CASE WHEN CONVERT( char(10), RecordDay, 120) = '2013-10-02' THEN ClickCount ELSE 0 END) AS [2013-10-02],
SUM( CASE WHEN CONVERT( char(10), RecordDay, 120) = '2013-10-03' THEN ClickCount ELSE 0 END) AS [2013-10-03],
SUM( CASE WHEN CONVERT( char(10), RecordDay, 120) = '2013-10-04' THEN ClickCount ELSE 0 END) AS [2013-10-04],
SUM( CASE WHEN CONVERT( char(10), RecordDay, 120) = '2013-10-05' THEN ClickCount ELSE 0 END) AS [2013-10-05]
FROM clicks
RIGHT JOIN DayHours ON DATEPART( HH, RecordDay) = ihour
GROUP BY ihour




Luis C.
Are you seriously taking the advice and code from someone from the internet without testing it? Do you at least understand it? Or can it easily kill your server?

Forum Etiquette: How to post data/code on a forum to get the best help
Post #1502687
Posted Tuesday, October 8, 2013 11:27 AM
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Thanks for your help.

I did a few changes on the query, but i am still encountering a few problems.
it is not summing the clickcount, i do get a three dimensional table like a wanted but without any measures
and also the table is dynamic and i dont know how to make the name of the columns dynamic where it will show the date it is checking.


WITH DayHours AS(
SELECT *
FROM (VALUES(1),(2),(3),(4),(5),(6),(7),(8),(9),(10),(11),(12),
(13),(14),(15),(16),(17),(18),(19),(20),(21),(22),(23),(0))x(ihour)
)
SELECT ihour,
SUM( CASE WHEN CONVERT( char(10), RecordDay, 120) >= getdate()-21 and CONVERT(char(10), RecordDay, 120) < getdate()-22 THEN ClickCount ELSE 0 END) AS [2013-10-02],
SUM( CASE WHEN CONVERT( char(10), RecordDay, 120) >= getdate()-14 and CONVERT(char(10), RecordDay, 120) < getdate()-15 THEN ClickCount ELSE 0 END) AS [2013-10-03],
SUM( CASE WHEN CONVERT( char(10), RecordDay, 120) >= getdate()-7 and CONVERT(char(10), RecordDay, 120) < getdate()-8 THEN ClickCount ELSE 0 END) AS [2013-10-04],
SUM( CASE WHEN CONVERT( char(10), RecordDay, 120) >= getdate() THEN ClickCount ELSE 0 END) AS [2013-10-05]
FROM clicks
RIGHT JOIN DayHours ON DATEPART( HH, RecordDay) = ihour
GROUP BY ihour
order by ihour asc


sql can be so hard on me sometimes....
Post #1502734
Posted Tuesday, October 8, 2013 11:29 AM
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p.s. if someone can tell me how to post a table, i will gladly draw the results
Post #1502736
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