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I have a table called Inventory with the following schema
ID, ItemID, Name, Value, CollectedDate
All of the columns allow duplicates except ID, so there may be multiple instances of a given Name, but with a different CollectedDate
For a given ItemID, I need to return the Value with the latest CollectedDate for each distinct Name. To add to the complexity, I need to put all of the returned items into a single row, using the Name as the column name.
So, what I'm starting with is this:
ID ITEMID NAME VALUE COLLECTEDDATE
1 12 Test1 abc 01/01/2014 00:00:00
2 12 Test2 def 01/01/2014 00:00:00
3 12 Test3 ghi 01/01/2014 00:00:00
4 12 Test4 jkl 01/01/2014 00:00:00
5 12 Test1 mno 01/03/2014 00:00:00
6 12 Test3 stu 01/05/2014 00:00:00
7 12 Test4 vwx 01/06/2014 00:00:00
8 12 Test4 yz 01/09/2014 00:00:00
9 14 Test1 123 01/09/2014 00:00:00
And my goal is to get to this:
ITEMID Test1 Test2 Test3 Test4
12 mno def stu yz
14 123 NULL NULL NULL
I created the following temp tables:
- @tempNames - contains a list of all of the distinct Names
- @tempIDs that contains all of the unique ItemIDs
- @tempInventory that contains all of the desired schema shown above.
How do I get one row of info for each ItemID to the @tempInventory table?
(I don't even know what to call what I'm trying to do. Otherwise, I'd google it).
".45 ACP - because shooting twice is just silly" - JSOP, 2010
-----
You can never have too much ammo - unless you're swimming, or on fire. - JSOP, 2010
-----
When you pry the gun from my cold dead hands, be careful - the barrel will be very hot. - JSOP, 2013
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you are looking for a pivot query[^]
Every day, thousands of innocent plants are killed by vegetarians.
Help end the violence EAT BACON
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Awesome hint - fingered it out.
".45 ACP - because shooting twice is just silly" - JSOP, 2010
-----
You can never have too much ammo - unless you're swimming, or on fire. - JSOP, 2010
-----
When you pry the gun from my cold dead hands, be careful - the barrel will be very hot. - JSOP, 2013
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Hello,
The following code returns the results we want.
However, they are being repeated.
For instance, we have ElectionName, Position, CandidateName and TotalCount.
Rather then display the results in the following format (current format)
ElectionName Position Candidate Name TotCount
Election Name 1 Mar 19 2014 President Candidate Name 1 13
Election Name 1 Mar 19 2014 President Candidate Name 2 22
Election Name 2 Mar 19 2014 President Candidate Name 1 13
Election Name 1 Mar 19 2014 President Candidate Name 2 22
Election Name 1 Mar 19 2014 President Candidate Name 1 13
Election Name 1 Mar 19 2014 President Candidate Name 2 22
Election Name 2 Mar 19 2014 1ST Vice President Candidate VP 1 27
Election Name 2 Mar 19 2014 1ST Vice President Candidate VP 8
Election Name 2 Mar 19 2014 1ST Vice President Candidate VP 27
Election Name 2 Mar 19 2014 1ST Vice President Candidate VP 8
Election Name 3 Mar 19 2014 1ST Vice President Candidate VP 27
etc
etc
We would like the results displayed in the following format:
ElectionName Position Candidate Name TotCount
Election Name 1 Mar 19 2014 President Candidate Name 1 13
President Candidate Name 2 22
President Candidate Name 1 13
President Candidate Name 2 22
President Candidate Name 1 13
President Candidate Name 2 22
Election Name 1 Mar 19 2014 1ST Vice President Candidate VP 1 27
1ST Vice President Candidate VP 1 8
1ST Vice President Candidate VP 1 27
1ST Vice President Candidate VP 1 8
1ST Vice President Candidate VP 1 27
etc
etc
with related positions group together with ElectioName.
Below is my code. Any help is greatly appreciated.
Select (e.ElectionName + CAST(e.ClosingDate AS VARCHAR(12))) as [ElectionName],
p.position,
c.candidateName,
COUNT(*) AS TotalCount
from ElectionResults er
inner join candidates c on er.candidateId = c.candidateid
inner join Positions p on er.positionId = p.positionId
inner join Elections e on c.PositionId = c.PositionId
group by grouping Sets(e. ElectionName),p.position,p.positionid,c.candidateName, e.closingDate
order by p.PositionId
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This can be achieved by looping through the resultset and clear the ElectionName if the Position is the same as in the previous row. But this doesn't belong to the database.
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As Jorgen has said, this is the wrong tool for the job, the database serves up the data, your UI/Report/Consumer of the data formats that data according you your requirements.
So do your loop/delete in the client, not the database.
Never underestimate the power of human stupidity
RAH
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It is doing the grouping by electionName but I can't figure out how to count the total count for each candidate.
Can you guys add that bit?
I just to get the total scores for each candidateName
WITH
ctePreAgg AS
(
SELECT (ElectionName + ' - ' + CAST(ClosingDate AS VARCHAR(12))) electionName, CASE WHEN Position='Member' THEN '' ELSE Position END As Position, CASE WHEN c.CurrentOfficeHolder='Incumbent' THEN CandidateName + '('+ c.CurrentOfficeHolder + ')' ELSE CandidateName END As CandidateName , c.PositionId,COUNT(*) TotalVotes
FROM Candidates c
JOIN Positions p ON c.PositionId = p.PositionId
JOIN Elections e on c.ElectionId = e.ElectionId
WHERE c.ElectionId IN (1,2,3)
GROUP BY Position, CandidateId, CandidateName,c.PositionId,CurrentOfficeHolder,AnswerType,ElectionName, ClosingDate
)
SELECT [OrgName] = CASE WHEN GROUPING(mh.PositionId) = 0 THEN MAX(mh.Position) ELSE mh.ElectionName END
,Names = CASE WHEN GROUPING(mh.PositionId) = 0 THEN MAX(mh.CandidateName) ELSE '' END
,PositionId = CASE WHEN GROUPING(mh.PositionId) = 0 THEN mh.PositionId ELSE '' END
,TotalCount = CASE WHEN GROUPING(mh.PositionId) = 0 THEN COUNT(*) ELSE '' END
FROM ctePreAgg mh
GROUP BY ElectionName,PositionId WITH ROLLUP
HAVING GROUPING(mh.ElectionName) = 0
ORDER BY mh.ElectionName, GROUPING(mh.PositionId) DESC, mh.PositionID;
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Well you are doing exactly what we advised you not to do and you want suggestion on how to improve doing that. Getting the total/count per group IS a database thing, formatting the text is NOT.
Personally I would use ROW_NUMBER and PARTITION OVER but not with a CTE.
Never underestimate the power of human stupidity
RAH
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Ok, sorry for my stupidity but I thought this is a database forum.
If it is, I am only trying to figure out how to get Total Count for each candidate, not formatting request.
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795]] Warning: Truncation may occur due to inserting data from data flow column "AS" with a length of 16 to database column "AS" with a length of 15.
I resolved this issue yesterday but today it failed again.
The package is successful if I run from Microsoft Visual studio. However, if I run initiate the job through SQL job agent it will fail.
Does anyone have a better idea to resolve this?
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Please do not re-post - it will not get you a quicker or better answer, but may piss off some of the CPians around us 
I'm not questioning your powers of observation; I'm merely remarking upon the paradox of asking a masked man who he is. (V)
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Thank you for your observation.
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You're more than welcome..
I'm not questioning your powers of observation; I'm merely remarking upon the paradox of asking a masked man who he is. (V)
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And when you run it using the different methods do you
- Use EXACTLY the same data. How do you know?
- Use EXACTLY the same database? How did you verify it?
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One of the issues I have run across over time is in the data itself. If your source is a legacy system then there may be a crlf issue, it can be either 1 or 2 characters. They sometimes use weird row terminators as well.
I would check if AS is the last field in a row and then pull the data into a string and check the length of the field. VS may well treat line feeds differently than SSIS.
Never underestimate the power of human stupidity
RAH
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[795]] Warning: Truncation may occur due to inserting data from data flow column "AS" with a length of 16 to database column "AS" with a length of 15.
I resolved this issue yesterday but today it failed again.
The package is successful if I run from Microsoft Visual studio. However, if I run initiate the job through SQL job agent it will fail.
Does anyone have a better idea to resolve this?
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I took Jorgen's advice and modified my Movie database
I split the table into 2, the first table being movie information and the 2nd table being FLV information
So I can do the JOINs in displaying the data, and using it to create a Flash Movie Player,
But it just dawned on me that I have no clue on how to insert and update records for my new setup here.
So I came up with this.
My question, am I on the right track here, Inserting the first table, getting the ID of the record so I can use the ID in the 2nd table?
Or is there a better way in which I can insert in one shot?
I'm not ready to write stored procedures yet, in case that is suggested.
INSERT INTO MovieInfo(
MovieName, MovieType, MoviePath, MoviePostage, MovieThumbnail, flv, h264
)
VALUES(
@MovieName, @MovieType, @MoviePath, @MoviePostage, @MovieThumbnail, @flv, @H264
);
DECLARE @mID AS INT;
SET @mID = (
SELECT MovieID FROM MovieInfo WHERE MovieName=@MovieName
)
INSERT INTO MovieInfo_flv(
movieID, flv_movieName, flv_skin, flv_folderpath, flv_filename
)
VALUES(
@mID, @flv_movieName, @flv_skin, @flv_folderpath, @flv_filename
)
modified 17-Mar-14 18:07pm.
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You either do this as a 2 statement operation or you create a stored procedure - the SP path is by far the simplest an most robust.
I presume you have an IDENTITY field the Movie table. So when a record is inserted the system puts the new ID into a variable called @Scope_Identity you can get the value from there.
I used stored procs for EVERYTHING, the UI/Service NEVER talks directly to a table/view, so I have a code generator to build my CRUD procs. So I am not going to be able to help with string inserts 
Never underestimate the power of human stupidity
RAH
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Well thanks for the confirmation on that. I guess I'll take a stab on stored procedures then.
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So here is some pseudo code for that.
Declare incoming variables
Insert into student table
Get Scope_Identity into a variable
Check for existing course - this may be done in the client
Insert missing course
Get Scope_Identity into another variable
Insert variables into link table (this is a many to many table linking the course and the student records)
Return the student record - I do this so the client has all the information about the student including the ID value.
Never underestimate the power of human stupidity
RAH
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OK
I can swap out the words like student on that
I'll write one and post it to see how I did on it.
Thanks!
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How do I structure my database tables so that it can allow many users to login simultaneously in my chat Application. While testing it in my IE and Crome in my PC.
Thanks.
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What is it about the structure of the database that would prevent many users from logging in simultaneously? What problem are you facing?
The difficult we do right away...
...the impossible takes slightly longer.
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I'm creating a chat App that will run online its includes signalR for real time messages. So now I'm trying to check if its can allow multiple users to log in in the in the same time using two browsers on my computer. when I check that I found that its override the first user that has being logged in first.
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sbangani wrote: How do I structure my database tables so that it can allow many users to login simultaneously
A database-server is designed to cater to multiple clients.
Simply do not use a desktop database (like MSAccess) and it should work out-of-the-box.
Bastard Programmer from Hell 
If you can't read my code, try converting it here[^]
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