Selecting The Rows Based Off Of Unique Columns
Mar 18, 2007
Hi there, im still learning SQL so thanks in advance.
I have a table with columns of customer's information, [customerID], [customerFirst], [customerLast], , [program] ... other columns ... There will be entries where there can be duplicate customerFirst and customerLast names. I would like to just return a single entry of the duplicate names and all associated row information. IE:
[customerID], [customerFirst], [customerLast], [ email], [program]
01 Bill Smith bill.smith@hotmail.com ymca
02 Bill Smith bill.smith@hotmail.com Sports
03 jon doe jon.doe@hotmail.com AAA
04 jon doe jon.doe@hotmail.com Ebay
05 Paul Sprite paul.sprite@hotmail.com Rec
Desired Returned result:
01 Bill Smith bill.smith@hotmail.com ymca
03 jon doe jon.doe@hotmail.com AAA
05 Paul Sprite paul.sprite@hotmail.com Rec
So in my code i have this:
dAdapter = new SqlDataAdapter("SELECT * FROM [Poc_" + suffix + "] WHERE (SELECT DISTINCT [CustomerLastName], [CustomerFirstName], [CustomerEmail] FROM [Poc_" + suffix + "])", cnStr);
dAdapter.Fill(pocDS, "Data Set");
However this is throwing up an error when i build the app:
An expression of non-boolean type specified in a context where a condition is expected, near ')'.
Description: An
unhandled exception occurred during the execution of the current web
request. Please review the stack trace for more information about the
error and where it originated in the code.
Exception Details: System.Data.SqlClient.SqlException:
An expression of non-boolean type specified in a context where a
condition is expected, near ')'.
Source Error:
Line 52: //dAdapter = new SqlDataAdapter("SELECT DISTINCT * FROM [Poc_" + suffix + "] ORDER BY [CustomerLastName]", cnStr);
Line 53: dAdapter = new SqlDataAdapter("SELECT * FROM [Poc_" + suffix + "] WHERE (SELECT DISTINCT [CustomerLastName], [CustomerFirstName], [CustomerEmail] FROM [Poc_" + suffix + "])", cnStr);
Line 54: dAdapter.Fill(pocDS, "Data Set");
Line 55:
Line 56: //Dataset for name comparison
1: Can someone explain to me why this error is happening?
2: Can soemone confirm that my intentions are correct with my code?
3: If I'm completely off, can someone steer me in the right direction?
Thanks alot!
-Terry
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Mar 20, 2008
I got the following query:SELECT TOP (8) ext.extID, ext.Quote, ext.sourceTitle, ext.extRating, gf_game.gameID, gf_game.catID, gf_game.URL, gf_game.TitleFROM gf_game_ext AS ext INNER JOIN gf_game ON gf_game.gameID = ext.gameIDWHERE (ext.Approved = 1)ORDER BY ext.extID DESC which is e.g. producing this output: 6000 -some text- Title 90 1960 2 tom-cl tom cl5999 -some text- title 90 1960 2 tom-clcl asdf5998 -some text- title 90 1959 2 tom-cl-cl asdfWhat I'd like to do now is to filter out the duplicate GameIDs (= 1960) so that just one unique row with the gameid 1960 is remaining. If I put in a SELECT DINSTINCT TOP(8) it just counts for the table ext, but I need it to count for gf_game.gameID - is that possible?Thanks a lot!
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Sep 18, 2007
As a beginner i am having trouble with this.
i have two different tables , both have a name column, nvarchar datatype.
I would like to select from table B all the rows which contain a name which is not in table A.
Then insert these rows, into table A
tried a few different ways & just keep getting strange errors that refer to courier font ??
SQL Team Your my Hero !
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Mar 25, 2002
I'm stuck. I have a table that I want to pull some info from that I don''t know how to.
There are two colomuns, one is the call_id column which is not unique and the other is the call_status column which again is not unique. The call_status column can have several values, they are ('1 NEW','3 3RD RESPONDED','7 3RD RESOLVED','6 PENDING','3 SEC RESPONDED','7 SEC RESOLVED').
i.e example, this is the existing data.
Call_id Call_Status
555555 3 3RD RESPONDED
235252 7 SEC RESOLVED
555555 7 3RD RESOLVED
325252 6 PENDING
555555 6 PENDING
325235 3 SEC RESPONDED
555555 1 NEW
This is the data I want...
Call_id Call_Status
555555 3 3RD RESPONDED
555555 6 PENDING
555555 7 3RD RESOLVED
The call_id could be any number, I only want the 6 PENDING rows where there are other rows for that call_id which have either 3 3RD RESPONDED or 7 3RD RESOLVED. If someone knows how it would be a great help.
Cheers,
Chris
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Mar 17, 2015
Here's my current SQL:
SELECT
RN_TEST_ID AS 'Test ID',
MAX(RN_EXECUTION_DATE) AS 'Last Execution Date',
MAX(RN_EXECUTION_TIME) AS 'Execution Time',
RN_DURATION AS 'Run Duration'
FROM RUN
[code]....
Here's a sample of data returned:
Test IDLast Execution DateExecution TimeRun Duration
86722/9/2015 0:0012:08:16180
86822/9/2015 0:0011:29:06181
86842/9/2015 0:0008:29:17119
105252/3/2015 0:0019:03:4089
105252/3/2015 0:0019:10:13305
106682/3/2015 0:0018:55:43103
106682/6/2015 0:0018:10:50123
114572/3/2015 0:0011:40:0726
What I need are two things:
1. The query should only return one record for each test id
2. The record returned should be the most recent. By most recent I mean the RN_EXECUTION_DATE and RN_EXECUTION_TIME of the returned row should be the most recent in time.
For example, in the sample data there are multiple rows with the same test id (for example 10668 and 10525. The 10525 is even more problematic since its execution date is the same for both rows returned - the execution times differ. Again, I want one record per test id and that record should be the most recent in time.
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Oct 4, 2006
I am a beginner at SQL so thanks ahead of time.....How do I get unique rows based on studentID? Distinct and group by don't seem to workDESIRED RESULTSStudentID First Name Last Name Other Columns...............................................634565491 MARINA BALDERAZ 640484566 TERE BALDERAZCURRENT SQL AND RESULTS.....SELECT ClassRosterRecID, StudentDataRecID, StudentDataKey, StudentID, FirstName, LastName, CurrentGrade, Gender, Ethnicity, EconDisadvantaged, TitleI, Migrant, LEP, Bilingual, ESL, SpecialEducation, GiftedTalented, AtRisk, CareerTech, Dyslexia, LastName + ', ' + FirstName AS LastNameFirstName, EconDisadvantagedSort, TitleISort, MigrantSort, LEPSort, BilingualSort, ESLSort, SpecialEducationSort, GiftedTalentedSort, AtRiskSort, CareerTechSort, DyslexiaSort, DistrictID, CampusID FROM vClassDemographicsDetail WHERE (DistrictID = '057910') AND (CampusID = '057910101') AND (LastName LIKE '%BALDERAZ%')StudentID First Name Last Name Other Columns...............................................634565491 MARINA BALDERAZ 634565491 MARINA BALDERAZ 634565491 MARINA BALDERAZ 640484566 TERE BALDERAZ640484566 TERE BALDERAZ640484566 TERE BALDERAZ
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Apr 17, 2008
Hi,
i have a table like below
table:-
id col2 col3 col4 col5 col6
1 2 3 4 5 6
2 5 8 4 7 6
3 4 8 2 6 9
4 2 5 8 6 3
5 6 9 5 5 9
i want to write a stored procedure where i pass column names a parameters and i want to get result based on that
For ex:-
if i pass the parameters as
col3 and col5 where id =1 then i should the result as
id col3 col4 col5
1 3 4 5
and if i pass input as col2and col6 where id =3, the result should be
id col2 col3 col4 col5 col6
3 4 8 2 6 9
can anyone help on this??
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Oct 21, 2013
I have to select rows from a table
if the first 2 characters of a 12 char column are
'GB'
Select BFKEYC from table where
I have a hokey way of doing it but it looks embarrassing:
BFKEYC GT 'GA9999999999'
AND BFKEYC LT 'GC'
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May 17, 2007
Using DISTINCT with SELECT have effect only for one column.
But when is needed to select (or to count) queries for all rows for all columns in a table without duplicates, doesn't work.
Select DISTINCT a1,a2,a3,a4 From Y ---> results 167 rows
Select DISTINCT a4 From Y ---> " 85 rows
Any thoughts?
Jorge3921
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Apr 3, 2000
I have 4 rows which are exactly the same. I want to delete one row but i do not have any unique identifing columns. How should i delete that row ?
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Apr 18, 2014
write a query which retrieves only unique rows excluding some columns.
IdStatusmanager Team Comments Proj number Date
19391New XUnassigned One 3732.0 16-Apr-14
19392Can YCustomer Two 3732.0 17-Apr-14
19393Can YCustomer Two 3732.0 17-Apr-14
19394Can YCustomer One 3732.0 18-Apr-14
19395New YCustomer One 3732.0 19-Apr-14
19396New YCustomer One 3732.0 21-Apr-14
19397New ZCustomer One 3732.0 20-Apr-14
In the above table project number and id shouldn't be considered and I should get the unique rows considering rest of columns and sorted based on date. Expected result is
IdStatusmanager Team Comments Proj number Date
19391New XUnassigned One 3732.0 16-Apr-14
19392Can YCustomer Two 3732.0 17-Apr-14
19394Can YCustomer One 3732.0 18-Apr-14
19395New YCustomer One 3732.0 19-Apr-14
19397New ZCustomer One 3732.0 20-Apr-14
19396New YCustomer One 3732.0 21-Apr-14
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Feb 3, 2008
I know this may have been asked before but can someone pls hel mw out here. i even tried to use the Crosstab SP that i found out on this site but it is not for what i need.
I have a Table/View called [Shipment] with the data below.
ShipNo Supplier
=================
1 CFA
1 TFA
2 LRA
2 LRB
3 ABC
4 TFA
I want the following as my result.
ShipNo Supplier1 Supplier2
==========================
1 CFA TFA
2 LRA LRB
3 AB
4 TFA
Thx.
Rav
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Jun 9, 2008
I'll show my schema first, then I'll explain what I'm doing:
--------------------------------------------------
Events
--------------------------------------------------
ID | E_Title
--------------------------------------------------
--------------------------------------------------
EventOptionGroups
--------------------------------------------------
ID | EOG_EventID | EOG_OptionGroupID
--------------------------------------------------
--------------------------------------------------
OptionGroups
--------------------------------------------------
ID | OG_Title
--------------------------------------------------
--------------------------------------------------
Options
--------------------------------------------------
ID | O_OptionGroupID | O_Description
--------------------------------------------------
--------------------------------------------------
EventRegistration
--------------------------------------------------
ID | ER_EventID | ER_Name
--------------------------------------------------
--------------------------------------------------
RegistrantOptions
--------------------------------------------------
ID | RO_EventRegistrationID | RO_OptionGroupID | RO_Selection
--------------------------------------------------
There are several events. Each event has several different sessions (stored in EventOptionGroups), and each session has a certain number of options (stored in Options).
A user can sign up for an event, and their information is stored in EventRegistration. They can choose an option for each session in the event. For each option they choose, a new row is added to RegistrantOptions.
For each row in EventRegistration, I want to output the user's information, and then the option they chose for each session in the event. Like this:
----------------------------------------------------------------------
E_Title | ER_Name | OG_Title1 | OG_Title2 | OG_Title3
----------------------------------------------------------------------
Event | Bob | O_Description1 | O_Description2 | O_Description3
So in that example, that event had 3 sessions.
Right now, I can only output E_Title and ER_Name, I don't know how to output the session information
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Mar 6, 2014
I have two columns which needs to repeat based on ID and number of distinct rows in that ID.
ID Date Created
1 1/1/2012 Sudheer
1 1/2/2013 Sudheer
1 3/3/2013 Sudheer
2 1/2/2014 Veera
2 2/5/2015 Veera
Results
ID Date Created Date Created Date Created
1 1/1/2012 Sudh 1/2/2013 Sudh 3/3/2013 Sudh
2 1/2/2014 Veera 2/5/2015 Veera
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Nov 12, 2014
I am working on a sql data that has a list of product names, shipment type and the count of shipments. The values are listed as rows in the database. it will be in the below format.I want to transpose only the shipment type and the corresponding count of each product name in the below format.I tried to do this but i am not able to achieve in the correct format.
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Sep 22, 2015
In a table I have some rows with flag A & B for a scode, some scode with only A and some are only B flags.
I would like to fetch all rows with flag A when both flags are present, no rows with B should be fetched. Fetch all rows when only single flags are present for a scode.How to achieve this using TSQL code.
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Jul 1, 2015
Part 1: When there is ~ (tilde) and has any value after it then it goes into a new row and duplicating the other columns like the facility in the screenshot attached and new column having the sequence.
Part 2: When there is ^ (Caret) its a new column irrespective of a value present or not
CREATE TABLE [dbo].[Equipment](
[EQU] [VARCHAR](50) NOT NULL,
[Notes] [TEXT] NULL,
[Facility] [VARCHAR](50) NULL)
INSERT INTO [dbo].[Equipment] ([EQU] ,[Notes] ,[Facility])
SELECT '1001','BET I^BOBBETT,DAN^1.0^REGULAR^22.09^22.090~BET II^^^REGULAR^23.56^0~','USA' union
SELECT '998','BET I^JONES, ALANA^0.50^REGULAR^22.09^11.0450~BET II^^^REGULAR^23.56^0~','Canada' UNION
select '55','BET I^SLADE,ADAM F.^1.5^REGULAR^27.65^41.475~','USA'
SELECT * FROM dbo.Equipment
I created the table in excel and attached the screenshot for a clear picture as to what is required. I use text to Columns in excel to achieve this not sure if there is anything similar in sql.
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Aug 5, 2015
declare @var varchar(8000)
set @var='Name1~50~20~50@Name2~25.5~50~63@Name3~30~80~43@Name4~60~80~23'
---------------------
Create table #tmp(id int identity(1,1),Name varchar(20),Value1 float,Value2 float,Value3 float)
Insert into #tmp (Name,Value1,Value2,Value3)
Values ('Name1',50,20,50 ), ('Name2',25.5,50,63 ), ('Name3',30,80,43 ), ('Name4',60,80,23)
select * from #tmp
I want to convert to @var to same like #tmp table ..
"@" - delimiter goes to rows
"~" - delimiter goes to columns
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Sep 17, 2007
Hello Everyone and thanks for your help in advance. I have a SQL Server Table wtih approximately 100,000 records. I need to determine if there are duplicate records in this table. My probelm is that there is a unique ID column that was added for each row, so I'm not exactly sure how to filter the rows. Any help on this would be greatly appreciated. Thanks.
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Jul 31, 2004
I want to start with a table that has 4 records:
-Self
-Supervisor
-Peer
-Direct Rep
And I want to end with a table that has every unique combination of these records (the order being reversed would be considered 'unique' in this context)
-Self , Supervisor
-Supervisor , Self
-Self , Peer
-Peer , Self
-Self , Direct Rep
-Direct Rep , Self
-Peer , Direct Rep
-Direct Rep, Peer
How would I do this in an SQL Query? Thanks for your help!
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Mar 21, 2014
I am trying to create a select query similar to the following but the problem I am having is that I want to only select one record where there may be several with the same dw_order_no. I have tried various ways using SQL developer but without success
SELECT VE_EZP_ORDER_TRANS.EZP_BILL_STATUS AS EZP_BILL_STATUS1,
VE_EZP_AGED_CUSTOMER_DEBT.SURNAME,
VE_EZP_AGED_CUSTOMER_DEBT.DEBT_AGE_CATEGORY,
VE_EZP_AGED_CUSTOMER_DEBT.DEBT_AGE,
VE_ORDERLINE.DW_ORDER_NO,
[code]...
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Jul 20, 2005
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
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Aug 10, 2015
I have a very large CSV file containing name-and-address information which I am reading in a Visual Basic project using the Microsoft.JetOLEDB.4.0 provider.
The key field on which the CSV file is to be filtered is the PostCode field. This is a UK-format PostCode "XXnn Nxx" where "XX" is one or more letters denoting a geographical area within the UK and "nn" is one or more characters (starting with at least one numeric digit) which when combined with the area code denotes a specific district within the geographical area. My aim is to identify all the unique UK postal districts held within my address CSV file.
Because I do not know how to use SQL to filter on the partial contents of a database field I am presently reduced to extracting unique full PostCodes using "SELECT DISTINCT PostCode,City,County FROM [ADDRESSES.csv]" into a DataTable object, then sequentially reading that DataTable using the operation of a dictionary object to identify unique PostCode areas, to finally construct the DataTable I need.
Is it possible in SQL to select records where the value of a varying number of characters before a space character in a given (PostCode) field is unique?
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Feb 10, 2014
I have a table (Billing Table) having multiple records for people having one record per person per each month.
How to get a list of the guys having record just for one month (say feb) and doesn't have any other months.
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Apr 21, 2008
Okay, let's see if I can explain this one. I am summing multiple lines of data from a labor detail table, by status. Using this query
SELECT EM.Lastname, LD.WBS1, LD.WBS2, P.Longname, SUM(LD.Held) AS HELDLABOR, SUM(LD.TBWRittenOff) as TBWrittenOffLabor, SUM(LD.WrittenOff) AS WRITTENOFFLABOR
FROM PR P INNER JOIN
(SELECT WBS1, WBS2, SUM(CASE WHEN BillStatus = 'h' THEN Billext ELSE 0 END) AS Held, SUM(CASE WHEN BillStatus = 'w' THEN Billext ELSE 0 END) AS TBWrittenOff,
SUM(CASE WHEN BillStatus = 'x' THEN Billext ELSE 0 END) AS WrittenOff
FROM LD
WHERE BillSTatus IN ('x','h', 'w')
GROUP BY WBS1, WBS2) LD ON p.WBS1 = ld.wbs1 AND P.WBS2 = LD.WBS2 INNER JOIN
EM ON p.ProjMgr = EM.Employee
WHERE p.Status IN ('a', 'i') AND P.ChargeType = 'r'
GROUP BY EM.Lastname, LD.WBS1, LD.WBS2, P.Longname
ORDER BY EM.Lastname, LD.WBS1
I get these results...
LastnameWBS1WBS2LongnameHELDLABORTBWrittenOffLaborWRITTENOFFLABOR
Boulet0001039.000100S.r. 41 & Del Prado Shopping Center/miscellaneous civil engineering18408.6309923.47
Boulet0001039.000102S.r. 41 & Del Prado Shopping Center/rezoning process008790
Boulet0001039.000106S. R. 41 & Del Prado Shopping center / const plan rev for environ planting2200.6800
Boulet0001039.000107S.r. 41 & Del Prado Shopping Center/cpd rezoning9335.4600
Okay, so now, of coarse, I want to change everything. I only want to return rows if there is a value > 0 in either Held Labor or TBWrittenOffLabor. Otherwise, no row return.
Here's what I tried, but it didn't work out because it still returns rows, it just zero's out the values for written off labor.
SELECT EM.Lastname, LD.WBS1, LD.WBS2, P.Longname, SUM(LD.Held) AS HELDLABOR, SUM(LD.TBWRittenOff) as TBWrittenOffLabor,
SUM(CASE WHEN LD.HELD > '0' THEN LD.WrittenOff ELSE '0' END) AS WRITTENOFFLABOR
FROM PR P INNER JOIN
(SELECT WBS1, WBS2, SUM(CASE WHEN BillStatus = 'h' THEN Billext ELSE 0 END) AS Held, SUM(CASE WHEN BillStatus = 'w' THEN Billext ELSE 0 END) AS TBWrittenOff,
SUM(CASE WHEN BillStatus = 'x' THEN Billext ELSE 0 END) AS WrittenOff
FROM LD
WHERE BillSTatus IN ('x','h', 'w')
GROUP BY WBS1, WBS2) LD ON p.WBS1 = ld.wbs1 AND P.WBS2 = LD.WBS2 INNER JOIN
EM ON p.ProjMgr = EM.Employee
WHERE p.Status IN ('a', 'i') AND P.ChargeType = 'r'
GROUP BY EM.Lastname, LD.WBS1, LD.WBS2, P.Longname
ORDER BY EM.Lastname, LD.WBS1
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Jun 27, 2007
I have query which retrieves multiple column vary from 5 to 15 based on input parameter passed.I am using table to map all this column.If column is not retrieved in the dataset(I am not talking abt Null data but column is completely missing) then I want to hide it in my report.
Can I do that??
Any reply showing me the right way is appricited.
-Thanks,
Digs
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Oct 25, 2007
Hi! I have a table Tbl1 has to columns:
A B
_________
Ibm Me
Sony Me
Me Bob
Me Frank
I'd like to select all rows where B=ME and A=Me Thanks for the help
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Jun 7, 2007
Hi All
I want to select a certainnumber of rows
select custno, amt, balance from customer where custno='customerno'
when showcust='r' then select rows where amt<balance
when showcust='c' then amt>balance etc
if showcust='' then show everything
Any insight will be greatly apprecaited.
Thanks
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Mar 15, 2007
I have a table that has a DateTime column which uses a DataTimedatatype. How do I retrieve a range of records based on the month andyear using ms sql?Eugene Anthony*** Sent via Developersdex http://www.developersdex.com ***
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May 8, 2008
I have the following variables VehicleID, TransactDate, TransactTime, OdometerReading, TransactCity, TransactState.
VehicleID is the unique vehicle ID, OdometerReading is the Odometer Reading, and the others are information related to the transaction time and location of the fuel card (similar to a credit card).
The records will be first grouped and sorted by VehicleID, TransactDate, TransactTime and OdometerReading. Then all records where the Vehicle ID and TransactDate is same for consecutive rows, AND TransactCity or TransactState are different for consecutive rows should be printed.
I also would like to add two derived variables.
1. Miles will be a derived variable that is the difference between consecutive odometer readings for the same Vehicle ID.
2. TimeDiff will be the second derived variable that will categorize the time difference for a particular vehicle on the same day.
My report should look like:
VehID TrDt TrTime TimeDiff Odometer Miles TrCity TrState
1296 1/30/2008 08:22:42 0:00:00 18301 000 Omaha NE
1296 1/30/2008 15:22:46 7:00:04 18560 259 KEARNEY NE
Can someone please help me here?
Thanks,
Romakanta
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Nov 18, 2003
OK. I have this query, works on another box fine.
SELECT *
FROM bookkeep RIGHT OUTER JOIN
acraccts ON LEFT(bookkeep.accnum, 9) = acraccts.p_accnum
WHERE (bookkeep.busdate = '03/09/10') AND (bookkeep.tradetype = 'S')
on my sql box, if i run it, i get no data.
i figured out that if i change the where clause to (bookkeep.busdate='2003/09/10') it works
OR
if i simply put SET DATEFORMAT YMD on the first line before the SELECT * that it also works.
my problem is the basic query is hard coded and i really can't change it.
is there a global sql server setting that will make my sql 2000 sp3 box recognize '30/09/10' as 2003/09/10?
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Jan 31, 2014
I have inherited a query which currently returns multiple instances of each work order because of the joined tables. The code is here and I've detailed the criteria needed below but need the best way to accomplish this:
Select h.worknumber, h.itemcode, h.descr, h.task_descr, h.qty, h.itemised,
h.serialnum, h.manufacturer, h.model_id, h.depot, h.date_in, h.date_approved,
h.est_complete_date, h.actual_complete_date, h.meterstart, h.meterstop,
h.custnum, h.name cust_name, h.addr1, h.addr2, h.town, h.county, h.postcode,
h.country_id, h.contact, h.sitename, h.siteaddr1, h.siteaddr2, h.sitetown,
[Code] ....
Each work order should only be returned once, and with the following additional criteria:
1. i.meter - this should return only the lowest number from that file.
2. sm.next_calendar_date - this should return only the most recent date out of those selected for the certificates on this piece of equipment
3. wh.meterstop as [Last Service Hours],
wh.date_created as [Last Service] - this should return the number from wh.meterstop at the most recent wh.date_created for that piece of equipment.
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Jan 30, 2008
This is a simple one, and I know that it has to be fairly common, but I just can't figure out an elegant way to do it. I have a table with the following fields:
OrderID (FK, not unique)
InstallationDate (Datetime)
CreateDtTm (Datetime)
There is no PK or Unique ID on this table, though an combo of OrderID and CreateDtTm would ostensibly be a unique identifier.
For each OrderID, I need to pull the InstallationDate that was created most recently (based on CreateDtTm). Here's what I've got so far, and it works, but man is it ugly:
SELECT a.OrderID, InstallationDate
FROM ScheduleDateLog a
INNER JOIN
(SELECT OrderID, max(convert(varchar(10),CreateDtTm,102)+'||' +convert(varchar(10), InstallationDate,102)) as TopRecord
FROM ScheduleDateLog GROUP BY OrderID) as b
ON convert(varchar(10),CreateDtTm,102)+'||' +convert(varchar(10), InstallationDate,102)=b.TopRecord
AND a.OrderID = b.OrderID
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