T-SQL (SS2K8) :: Selecting Latest Record With Info
Aug 27, 2014
I have created the following SQL snippet that is a very simple mock-up illustrating the problem (I hope!) that I am facing:
-- create table
if object_id('tempdb..#tmpdelnotes') is not null
drop table #tmpdelnotes
create table #tmpdelnotes(
DelNote int identity (1,1) ,
DelDate date not null,
Item int not null,
Customer int not null)
[code]...
What I need to retrieve is a unique list of item numbers with information about the latest (DelDate) delivery note. The "Clumsy workaround" works, but is not very pretty when doing multiple table joins. Is it really necessary to use a derived table for this kind of query? Window functions can only exist in the SELECT and ORDER BY clauses, which is understandable since the calculations take place (I would guess) after the aggregations in the HAVING clause.
The situation is that we have resources (trucks) that perform shifts. Shifts consists of actions. A resource can perform multiple shifts.
For every resource we want to find the record that:
- Is 'younger' than the last realized action.
- Has actionkind pickup, deliver or clean
I have constructed a solution with CTE and row_number but I was curious if there would be other alternatives. The fact that I'm joining a CTE onto itself and subject the outcome to a partition makes me think there are sharper ways.
Note that the action id in the data below is also sorted but in practice this need not be the case. The sorting key is prevalent.
Chasis Status Date pl1 sold 10/20/2004 pl1 return 10/21/2004 pl2 sold 10/24/2004 pl2 return 10/25/2004 pl3 sold 11/01/2004 pl4 sold 11/03/2004 pl4 return 11/04/2004 pl4 sold 11/06/2004
sp i want to list out cars that status solid has been sold
so in this case only pl3 and pl4 can be display. So anyone can advise me on this. thanks
Hello all. I ma using the following query to pull back data. The MergeHistory table has a column named DateMerged. I am looking to pull back the one record with the most recent DateMerged. I have managed to get the query as far as below but not sure how to select the most recent one. Can anyone help with this? I was told it may be along the line of SELECT TOP 1 or something?
INSERT INTO @List (IndexID, IndexName, MergeSystem, Status, DateCreated, CreatedBy, DataTag, MergedDate) SELECT DISTINCT RT.IndexId, isnull(dbo.ufn_GetBestIdentifier(RT.IndexId), dbo.ufn_GetBestVirtualIdentifier(RT.IndexId)), dbo.ufn_GetEntitySystemName(RT.IndexId), RT.Status, CONVERT(varchar, RT.DateCreated, 106) as DateCreated, RT.CreatedBy, RT.DataTag, MH.MergedDate FROM @resulttable AS RT, MergeHistory AS MH WHERE RT.IndexId = MH.EntityID
I am developing realese system. It contains application, application releases and changes that have been made in a particular release.
What i need to do is: I need to retrieve the latest version for a particular application and the latest change so as a result I would see in a table: application, latest version and latest change for the latest version.
I tried to querry that using Max function but it does not seem to work as I get e.g. 2 rows when there are 2 records for the same version.
I have 6 columns, all with dates within them, i.e.Proposed Start Date 1Proposed Start Date 2Proposed Start Date 3Proposed Finish Date 1Proposed Finish Date 2Proposed Finish Date 3What I need to do is narrow this down into two fields:Start DateFinish DateSo I need to find the newest value from the columns. i.e.If PS1 filled PS2 and PS3 empty, then Start Date = PS1If PS3 empty and PS2 filled, then Start Date = PS2If PS3 filled then PS3and similarly for Proposed Finish Dates.Anyone knew how I can do this.(Maybe the following will help for the programmers out there:If PS3 <> nullThen StartDate = PS3Else if PS2 <> nullThen StartDate = PS2ElseStartDate = PS1End IFJagdip
Let's say I have a table of data as per the below..
I'm trying to extract only the green highlighted items..
The rules applied are: Only the latest data concerning all cases, and only 1 line (the latest) per case.
As you can see in the image, I don't want the 2nd,3rd, and 4th record extracted cause they are all superseded by more recent records (identified as they are further in the table).
I've considered using either Distinct or Having? but can't get that to work.. If I could use Distinct but then ensure it's the latest record in the table that would be perfect.
I want to get the latest comment for each id based on the maximum createdDate and not sure how to do this, tried to do Max but it was still returning all the rows.
SET ANSI_NULLS ON GO
SET QUOTED_IDENTIFIER ON GO
CREATE TABLE [dbo].[Audit]( [id] [nvarchar](64) NOT NULL,
I have table has column called [last modified date] it has time too , i need to get the [latest modified date] for particular ID , there are many updates to the ID and i just need the latest date.
I want to get latest updated date on each transid and only for status =approved .
------------------- out put would be ------------ idtransid date status 31013/1/2014 approved 61031/2/2014 approved
table ----------- idtransid date status 11011/1/2014 approved 21012/1/2014 close 31013/1/2014 approved 41021/2/2014 approved 51022/2/2014 close 61031/2/2014 approved
I have a table that has records layed out as so:Table:fd_Id INT IDENTITY (1, 1)fd_User VARCHAR(30)fd_Effective DATETIMEData could be as follows:1 | "user1" | 6/20/20012 | "user2" | 6/1/20023 | "user2" | 6/5/20024 | "user2" | 6/5/20025 | "user2" | 2/1/20026 | "user3" | 9/1/20037 | "user3" | 10/2/20028 | "user4" | 1/1/2005What I need to retrieve from that table is the SINGLE LATEST item ofeach fd_User.Results:1 | "user1" | 6/20/20013 | "user2" | 6/5/2002 (or 4 | "user2" | 6/5/2002) since the dates arethe same but only 1 of them6 | "user3" | 9/1/20038 | "user4" | 1/1/2005
I have a table that contains a Ref field and a TransactionDate field. For each Ref field there are mutliple Transactions. I am trying to put together a query that selects the Latest Transaction date for each Ref field in the table.
I tried:
SELECT * FROM tabMediaTransaction WHERE (TransactionDate = (SELECT MAX(TransactionDate) AS Expr1 FROM tabMediaTransaction AS tabMediaTransaction_1))
But this only returns 1 record for 1 Ref field. I need 1 record for each Ref field
I work for an organization that repairs serialized devices. Each time a device is repaired it's serial number is recorded in a database table along with the date it was repaired along with other information about the device. There are multiple cases where a unit has been repaired more than once.
I am trying to write a query that will return the serial only once and that record will be the record of the latest repair date. To sum it up,
Return a list of serials where if a serial exists more than once in the table, return only the instance of the serial record(s) with the max(created_dt). The end result will be a list of distinct serial numbers.
Here is my Query. The problem I believe is in my sub-query but I am not sure how to structure it.
I have a table here. I want find a way of getting the latest date, when the code is the same. If the Declined date is null. Then I still want the latest date. E.g. ID 3.
If the declined date is filled in. Then I want to get the row, when the Datein column value is greater then the declined date only.
I tried grouping it by max date, but i got an error message when trying this out. Against the code
WHERE MAX(Datein) > Declined
An aggregate may not appear in the WHERE clause unless it is in a subquery contained in a HAVING clause or a select list, and the column being aggregated is an outer reference. What do I need to do to get both my outputs working?
Hi i was wanting to know how to select a record in a gridview. I have a gridview with firsname and lastname. I currently have select command on it but don't want it. I want to be able to select first name or last name and have it take me to that record on the database.
I want the top 1, having the highest counter from each ID. This is a highly simplified version of that I am pulling which also is between a date range, but same principle.
IE: SELECT * FROM Table WHERE ID in (SELECT DISTINCT ID FROM Table WHERE Date BETWEEN <date> AND <date>
I'd rather keep it in one statement if possible, but if I have to do it in multiple passes then so be it.
I'm trying to run this code, which worked on SQL 2000, on 2K8:
SELECT [Business Unit] ,[Department] ,[Ext :] ,[F9] ,[First Name :] ,[Last Name :] ,[Mobex :] ,[Mobile :] ,[Sub Department] FROM MyCompanyStaffPhoneList...Sheet1$
However it just returns this message..Msg 7308, Level 16, State 1, Line 1 OLE DB provider 'Microsoft.Jet.OLEDB.4.0' cannot be used for distributed queries because the provider is configured to run in single-threaded apartment mode.
Hi Just started using Visual Studio Express 2005 (Web) with Server 2005 Express and I am trying to extract the data from a SQL but cannot find how to connect to and open a SQL recordset so as to use the values of a single record dotted around a page. I would be using the values in the <Head> and <body> areas of the page. The body of the page would utilise standard data grids for sub and sub data, this being no problem. Below is how I would have retrieved the "EndDate" value from an Access databse under asp.
Set Conn=Server.CreateObject("ADODB.Connection") Set rs=Server.CreateObject("ADODB.RecordSet") Conn.Open "DBQ=" & Server.MapPath("../private/Drapers.mdb") & ";Driver={Microsoft Access Driver (*.mdb)};" rs.open "SELECT * FROM Products where ID = 44", Conn, 3, 3 rs("Metta1") rs("Metta2") The following is from the Web.config file
<connectionStrings><add name="ConnectCB" connectionString="Data Source=.SQLEXPRESS;AttachDbFilename=|DataDirectory|CBBasic.mdf;Integrated Security=True;User Instance=True" providerName="System.Data.SqlClient"/></connectionStrings> I have tried lots of things that were either code that was superceeded or just plainly didn't work. Any help would be appreciated. John
I have a table with score info for each group, and the table also contains historical data, I need to get the ranking for the current week and previous week, here is what I did and the result is apparently wrong:
select CurRank = row_number() OVER (ORDER BY cr.CurScore desc) , cr.group_name,cr.CurScore , lastWeek.PreRank, lastWeek.group_name,lastWeek.PreScore from (select group_name, Avg(case when datediff(day, asAtDate, getdate()) <= 7 then sumscore else 0 end) as CurScore
[Code] ....
The query consists two parts: from current week and previous week respectively. Each part returns correct result, the final merged result is wrong.
I want to get some combined data from both tables, so right now I am joining them at the SessionStartTime column, which is a primary key in the first and a foreign key in the second table, something like this:
Code: SELECT DlIndexTable.SessionStartTime, DlTextDataTable.Channel01data FROM DlIndexTable LEFT JOIN DlTextDataTable ON DlIndexTable.SessionStartTime = DlTextDataTable.SessionStartTime WHERE DlIndexTable.SessionStartTime BETWEEN '2006-10-13 16:40:08.790' AND '2012-03-01 17:54:30.930' ORDER BY DlIndexTable.SessionStartTime, DlTextDataTable.ChTimestamp
The trouble is that this query, exactly as requested, gives me all the entries from the second table matching the first, while I really would like to pick just one row (preferably, the first chronologically - by ChTimestamp) so that the first column (SessionStartTime) has distinct entries in the resulting table. What would be the simplest way of doing that? Performance is not a big priority over simplicity since the first table could have only a few hundred rows (maybe a couple of thousand), while the second will be real tiny.
The earlier versions will still exist on the database, but the latest version will be 2.1.
There may be several different documents, with different DocumentID’s (e.g. DocumentID = “1”, DocumentID = “2”), etc., and each of these documents may have many versions.
I’m trying to write a query to display a list of documents showing ClientID, ProjectID, DocumentID, MinorVersion, MajorVersion, Name… but the list should only display the latest version of each document.
So, if the database contained the following records:
ClientID, ProjectID, DocumentID, MajorVersion, MinorVersion, Name 1,1,1,0,1,My Document 1,1,1,0,2,My Document 1,1,1,0,3,My Document 1,1,1,1,0,My Document 1,1,1,2,0,My Document 1,1,1,2,1,My Document 1,1,2,0,1,My Second Document 1,1,2,0,2,My Second Document 1,1,2,0,3,My Second Document
My query should return:
ClientID, ProjectID, DocumentID, MajorVersion, MinorVersion, Name 1,1,1,2,1,My Document 1,1,2,0,3,My Document
… where 2.1 is the latest version of Document 1 and 0.3 is the latest version of Document 2.how to do it.
MSSQL2000I have a table that contains customer transactionsCustomerIDTransactionTransactionDate....I need to select the most recent record that matches a specific CustomerID.I am fairly new to SQL, could someone provide a sample select statement.TIATim Morrison-- Tim Morrison--------------------------------------------------------------------------------Vehicle Web Studio - The easiest way to create and maintain your vehicle related website.http://www.vehiclewebstudio.com
I have a stored procedure (below), that is supposeto get a Reg Number from a table, (Reg_Number), insuch a way that every time the stored procedure is called,it will get a different reg number, even if the storedprocedure is called simultaneously from two differentplaces,However it is not working that way.If two different users access a function in thereVB program at the same time, the two different userswill get the same reg number.I have looked at the stored procedure, it looks foolproof,yet it is not working that way.Thanks in Advance,Laurence NuttallProgrammer Analyst IIIUCLA - Division of Continuing Education'---------------------------------------------------------------------------Here it is:CREATE PROCEDURE sp_GetNextRegNum@newRegNum char(6) = NULL OUTPUTASLABEL_GET_ANOTHER_REG:Select @newRegNum =(select min(Reg) from reg_number)IF Exists (select Reg from reg_number where reg = @newRegNum )BeginDelete from reg_number where reg = @newRegNumIF @@Error <> 0BeginGoto LABEL_GET_ANOTHER_REGEnd--EndifEndELSEGoTo LABEL_GET_ANOTHER_REG--EndifGO
