Selecting The First Instance Of Each Record From A Subset
May 21, 2001
Hi
I'm sure this is an easy problem but my brain is fried today...however how do I do the following:
I have a two column table. One is a key field where duplicates can arise and the other is a datetime field. So you might have some records looking like this:
1231999-06-14 12:17:11.000
1231999-06-14 12:17:31.310
1231999-06-14 12:17:31.000
1231999-06-14 12:22:56.000
1231999-06-14 12:22:58.000
8901999-06-15 10:00:18.000
8901999-06-15 10:03:30.340
8901999-06-15 10:03:30.000
8901999-06-15 10:03:40.000
OK, how do I get the top 1 of each key so that I get a subset of records looking like the following:
1231999-06-14 12:17:11.000
8901999-06-15 10:00:18.000
Thanks in advance
Bazza
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Nov 2, 2007
I want to break up a set of search results into small chunks. For instance, think about how Google displays a block of ten results out of the entire set. Selecting the top 10 is dead easy with "TOP 10"; how do I select the next 10?
Obviously one option would be to select the top 20, and programmatically discard the first 10, but surely there is a better way? I am doing this for a ASP.NET 2.0 application, and if I can retrieve just what I want, I can DataBind to a Repeater, and let ASP.NET do all the hard work of displaying the data.
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Sep 4, 2007
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.
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Feb 28, 2007
Hello all,
I'm a bit new to SQL Server and T-SQL (my background is in DB2), so hoping you can help me with this. I'm writing a T-SQL script that's hopefully going to scan a bunch of SQL server instances and record the results. We've got a mix of SQL2K and SQL2K5 instances, and for part of my script I only want to run something if the remote instance is SQL2K.
I'd tested this on my local PC with several instances created and it worked fine. When I try and run it for instances located on other servers it barfs :eek: . From what I've found from looking up the error message it looks like I've got myself a loopback -- but I don't know how to get around it - any ideas please?
DECLARE @tempdata TABLE (scratch sql_variant)
DECLARE @debug tinyint
DECLARE @server sysname
DECLARE @version varchar(20)
SET @debug=1
SET @server='SQLSERVER_INSTANCE'
INSERT INTO @tempdata (scratch) EXEC ('[' + @server + '].master.dbo.sp_executesql N''SELECT SERVERPROPERTY(''''ProductVersion'''')''')
SELECT @version = convert(varchar(100),scratch) from @tempdata
DELETE FROM @tempdata
IF @debug>0 BEGIN PRINT @server + ' is running SQL Server version: ' + @VERSION END
IF charindex('8.00',@version) > 0 BEGIN
PRINT 'SQL2K-only code goes here'
END
The error I get is:
OLE DB provider "SQLNCLI" for linked server "SQLSERVER_INSTANCE" returned message "The transaction manager has disabled its support for remote/network transactions.".
Msg 7391, Level 16, State 2, Line 1
The operation could not be performed because OLE DB provider "SQLNCLI" for linked server "SQLSERVER_INSTANCE" was unable to begin a distributed transaction.
I get this error running from a SQL2K5 instance against both SQL2K or SQL2K5
TIA, moff.
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Jun 25, 2004
I'm trying to add a next and previous button to a popup window I have on a photo gallery -
Having trouble with the sql
I know I would have 2 select statements that would each return 1 result set.
I know how to get the top ( and bottom by ordering descending and doing Select Top 1)
But how would I get the next one up!
I would hate returning the entire image section and perform the calcuation in the business tier :(
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Mar 1, 2012
I have one table like this:
Code:
CREATE TABLE DlIndexTable
(SessionStartTime DATETIME NOT NULL PRIMARY KEY, SchemaID INTEGER NOT NULL,
DLBaseRate REAL NOT NULL)
and one like so:
Code:
CREATE TABLE DlTextDataTable (
SessionStartTime DATETIME NOT NULL REFERENCES DlIndexTable,
ChTimestamp FLOAT NOT NULL, Channel01data VARCHAR (255),
Channel02data VARCHAR (255), ... , Channel16data VARCHAR (255),
CONSTRAINT TxtDatPriKey PRIMARY KEY (SessionStartTime, ChTimestamp))
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.
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Mar 18, 2015
I’m writing a document management system. The documents themselves are created from the contents of a database. The database is SQL Server.
The database contains a table, like so:
ClientID, ProjectID, DocumentID, MinorVersion, MajorVersion, Name
Initially, the user will create a “V0.1” document. So the data would look something like
ClientID = 1
ProjectID = 1
DocumentID = 1
MajorVersion = 0
MinorVersion = 1
Name = “My Document”
Thereafter, the user can create new versions as “0.2”, “0.3”, etc., or “1.0”, “1.1”, “2.0”, etc.
For example, a “2.1” document would be stored as:
ClientID = 1
ProjectID = 1
DocumentID = 1
MajorVersion = 2
MinorVersion = 1
Name = “My Document”
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.
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Jul 20, 2005
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
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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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Mar 26, 2008
This is my first post so I hope I'm doing it to the right forum. I need to compare a LastUpdated time to Start and End Time fields to get the "Due" Time for a given order. Can someone give me the correct SQL? (the example below should result in 6:00:00 AM "Due" time.) All are DATETIME fields. Thank you.
LastUpdated StartTime EndTime DueTime
5/29/2007 12:04:32 AM 2:00:00 AM 11:30:00 AM 3:30:00 PM
11:30:00 AM 5:00:00 PM 9:00:00 PM 5:00:00 PM 2:00:00 AM 6:00:00 AM
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Apr 24, 2001
Hello.
I need to select a random record from TABLE. It might look easy with using RAND() function, but the tricky part is that ID's which are the PRIMARY KEY, were assigned as a random number.
So right now ID's in that TABLE look some thing like that: -18745, 45809, 129, -5890023, 487910943, -209, etc...
If any one have any ideas please respond.
Thanks in advance.
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May 19, 2004
Hi all,
I Have the following situation:
CREATE TABLE First_Table (id INTEGER IDENTITY(1,1) NOT NULL,
titre VARCHAR(50) NOT NULL,
annee INTEGER NOT NULL,
idMES INTEGER,
genre VARCHAR(20) NOT NULL,
resume TEXT,
codePays VARCHAR(4),
CONSTRAINT PKFilm PRIMARY KEY (idFilm),
FOREIGN KEY (idMES) REFERENCES Artiste,
FOREIGN KEY (codePays) REFERENCES Pays);
I'ld like fill in this tables records inserting in the column id values I got in the one other table. In Oracle it is possible to do it using sourceTable.nextval where sourceTable is created as: CREATE SEQUENCE sourceTable;
How can I do it in MS SQL or Transact-sql?
Thanx all
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May 25, 2005
I'm no SQL whizz yet but I'm learning hard, and need to get some information from our DB rather urgently so have resorted to this fantastic forum, only I can't find what I'm looking for.
Basically I'm selecting a whole load of entries that have a (admission)date field after 2001, but I only want to return the Earliest (admission) for each (patients number).
Here is the script I have created to select all the data, but how can I limit the results to just the earliest (admission date) for each (patient).
SELECT
Admission_Year, Admission_Month, Age_On_Admission, [Length of stay(continuing)], [Patient's Number], [Cons epis seq no], Sex, [Main Primary Pas Diag], [Date of Death], [Epi duration], [OP Code1], [Admission date], [Date of Death] - [Admission date] AS [days before death],[Intended Management]
FROM dbo.Admissions
WHERE (Admission_Year > 2001) AND (Age_On_Admission > '64') AND ([Intended Management] = 'inpatient') AND ([Date of Death] IS NULL)
I would really appreciate it if anyone can help with this, I'm sorry I can't really contribute to this forum as an SQL expert as .net is really my forte and I usually spend my time contributing to the asp.net forums. :)
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Oct 10, 2006
I have the following query I am using to identify duplicate records in one of my database tables:
Code:
SELECT memberID,
COUNT(memberID) AS NumOccurrences
FROM ChapterMembers
GROUP BY memberID
HAVING ( COUNT(memberID) > 1 )
Executing the above proc returns 4079 records...
Now, I would also like to know the ChapterID for each member with a duplicate record. ChapterID is also stored in the ChapterMembers Table...
I tried running the following procedure:
Code:
SELECT memberID,
COUNT(memberID) AS NumOccurrences, chapterID
FROM ChapterMembers
GROUP BY memberID, chapterID
HAVING ( COUNT(memberID) > 1 )
But zero results are returned ...
The ultimate goal here is to identify duplicate records where one of their chapterID's = '81017' and to delete that record from the database.
Anyone have any ideas what I am doing wrong? Also, any suggestions for removing the records would be appreciated.
Thanks,
Jandrews
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May 14, 2014
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.
output of the query is
id_action id_resource actionKindCode
4665 4 clean
34540 96 pickup
24000 901 clean
declare @mytable table (
id_action int,
id_shift int,
[code]....
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Apr 20, 2007
Hi,
Is it possible to select a record by just the date part of the data type TIMESTAMP?
date_time
2007-04-20 16:27:01
For example, a query to select all records added today.
Thanks very much,
dai.hop
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Oct 10, 2005
Hello everyone, I have a query problem.I'll put it like this. There is a 'publishers' table, and there is a'titles' table. Publishers publish titles (of course). Now I want to make aquery (in MS SQL Server) that would return the last title published by everyof the publishers. Quite clear situation. But I can't make it work.If I use inner join (which I should, because I need data from both tables)then I get a result showing all publishers and all titles. What I want toget is all publishers, and only their last title, so I don't have more thanone line for the same publisher, and this line should contain publisherdetails and last title details.I tried using DISTINCT, but it works on a whole resultant row rather then acolumn, and since rows are all distnict (because they also contain columnsfrom titles) this didn't help me.What I can do is (in my application) first get a list of publishers, andthen loop through them selecting only the last title belonging to eachpublisher. I want to see if there is a way to accomplish the same thing withan SQL query (or maybe a stored procedure, view, or whatever). Anything ispossible, as long as it stays within SQL server and doesn't rely on theclient application.Of course, both 'publishers' and 'titles' tables have a primary key('publisherID', and 'titleID'), and 'titles' has a 'publisherID' columnwhich relates titles with publishers.Help :)
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Mar 23, 2006
Good Morning,I have a person table with personID. I have a personRate table withpersonID, rateID, and effectiveDate.I need to select fields from personRate, but I want the fields from theproper record.I need the one child record that has the most current date of the largestrateID.For example a person may have many rate records. I need the record that hasthe most current date of the largest rateID they have. Does that makesense?I am making a view that has data from both tables. I need to display themost current rate info.Any ideas? TIA ~ CK
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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.
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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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Oct 29, 2006
Hi,I have a stored procedure that has to extract the child records forparticular parent records.The issue is that in some cases I do not want to extract all the childrecords only a certain number of them.Firstly I identify all the parent records that have the requird numberof child records and insert them into the result table.insert into t_AuditQualifiedNumberExtractDetails(BatchNumber,EntryRecordID,LN,AdditionalQualCritPassed)(select t1.BatchNumber,t1.EntryRecordID,t1.LN,t1.AdditionalQualCritPassedfrom(select BatchNumber,RecordType,EntryRecordID,LN,AdditionalQualCritPassedfrom t_AuditQualifiedNumberExtractDetails_Temp) as t1inner join(select BatchNumber,RecordType,EntryRecordID,Count(*) as AssignedNumbers,max(TotalNumbers) as TotalNumbersfrom t_AuditQualifiedNumberExtractDetails_Tempgroup by BatchNumber, RecordType, EntryRecordIDhaving count(*) = max(TotalNumbers)) as t2on t1.BatchNumber = t2.BatchNumberand t1.RecordType = t2.RecordTypeand t1.EntryRecordID = t2.EntryRecordID)then insert the remaining records into a temp table where the number ofrecords required does not equal the total number of child records, andthenloop through each record manipulating the ROWNUMBER to only selectthe number of child records needed.insert into @t_QualificationMismatchedAllocs([BatchNumber],[RecordType],[EntryRecordID],[AssignedNumbers],[TotalNumbers])(select BatchNumber,RecordType,EntryRecordID,Count(*) as AssignedNumbers,max(TotalNumbers) as TotalNumbersfrom t_AuditQualifiedNumberExtractDetails_Tempgroup by BatchNumber, RecordType, EntryRecordIDhaving count(*) <max(TotalNumbers))SELECT @QualificationMismatched_RowCnt = 1SELECT @MaxQualificationMismatched = (select count(*) from@t_QualificationMismatchedAllocs)while @QualificationMismatched_RowCnt <= @MaxQualificationMismatchedbegin--## Get Prize Draw to extract numbers forselect @RecordType = RecordType,@EntryRecordID = EntryRecordID,@AssignedNumbers = AssignedNumbers,@TotalNumbers = TotalNumbersfrom @t_QualificationMismatchedAllocswhere QualMismatchedAllocsRowNum = @QualificationMismatched_RowCntSET ROWCOUNT @TotalNumbersinsert into t_AuditQualifiedNumberExtractDetails(BatchNumber,EntryRecordID,LN,AdditionalQualCritPassed)(select BatchNumber,EntryRecordID,LN,AdditionalQualCritPassedfrom t_AuditQualifiedNumberExtractDetails_Tempwhere RecordType = @RecordTypeand EntryRecordID = @EntryRecordID)SET @QualificationMismatched_RowCnt =QualificationMismatched_RowCnt + 1SET ROWCOUNT 0endIs there a better methodology for doing this .....Is the use of a table variable here incorrect ?Should I be using a temporary table or indexed table if there are alarge number of parent records where the child records required doesnot match the total number of child records ?
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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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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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May 26, 2015
When I run this query:
SELECT orderno, *
FROM _order
WHERE order_date >= '5/14/2015 00:00:00'
AND order_date < '5/15/2015 11:59:59'
ORDER BY order_date asc
I get a result of:
A1G7222015-05-14 13:00:11.143
A1G7232015-05-14 13:33:35.407
A1G7242015-05-14 13:39:16.657
A1G7252015-05-14 14:25:43.507
A1G7262015-05-14 14:29:18.050
A1G7272015-05-14 15:38:12.263
But I know there is one more record that falls into 05/15/2015
A1G7282015-05-15 12:26:52.807
Can you see what I am missing in my query in order for me to retrieve the missing record A1G728?
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Jan 24, 2015
I have a database full of different types of leads some for company A some for company B and so on, each doing a different service. However the leads from B can be used for A and leads from A can be used for B, so I want to merge the data.
Example:
Phone Number Name Home Owner Credit Insurance
727-555-1234 Dave Thomas Yes B
727-555-1234 Dave Thomas Gieco
I would like the end result to be one record:
Phone Number Name Home Owner Credit Insurance
727-555-1234 Dave Thomas Yes B Gieco
Since these were imported into SQL they all have a unique ID, here are the current labels
ID,phone_ number,first_ name,last_name,address1, address2, address3,city,state,postal_code,HOME_OWNR,HH_INCOME,CREDIT_RATING,AGE,MATCH,source_id,
title,comments,dnc_flag,provider,vehicle,coverage,alt_phone,email,marital status,dob
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Oct 19, 2007
Greetings,
I am running a proc (PROC1) that gets one record at a time and does some work against it.
select min(myid) as NextID
from tbl_ListOfThingsToDo
where AlreadyDone is null
Then once I have the MyID, I set the 'AlreadyDone' bit to True so that no one else picks that record up.
update tbl_listofThingsToDo set AlreadyDone=1 where MyID=(from above)
If there is only one PROC1 running, this is no problem. He just keeps grabbing the next record to operate on.
--but--
If I kick off multiple instances of PROC1 for scaleability reasons, how can I make sure that only one instance gets the next record? For example, couldn't the second instance get the same myid BEFORE the first instance has written that he already got it?
Design is to run 3-5 instances of this to get extra cycles.
Let me know your thoughts, and thanks..
Dan Ribar
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Sep 28, 2007
We have an archive table which keeps each instance of a sales order that was archived under a "Verion No" field. Each time the sales order is archived it is entered into the archive tables (Sales Header Archive, Sales Line Archive). What I am trying to do is write a query to return all sales orders but only the most recent archived version.
For example this table layout is similar to what I am working with. Version No, Order No and Customer No. are the keys between the Header and Line tables, Customer Name column in the output is from only the Sales Header Archive table
SALES LINE ARCHIVE TABLE
Version No - Order No. - Customer No -----> (other columns)
1 s-5 1000
2 s-5 1000
1 s-6 2000
1 s-7 3000
2 s-7 3000
3 s-7 3000
1 s-8 4000
1 s-9 2000
2 s-9 2000
Here is what I need to output to show:
RESULTS OF JOINED TABLES
Version No - Order No - Customer No - Customer Name ---> (other columns)
2 s-5 1000 Something, Inc.
1 s-6 2000 Acme
3 s-7 3000 Company, LLC
1 s-8 4000 Blah & Associates
2 s-9 2000 Acme
It should return the last Version No of each Sales order.
Does that make sense? It is something probably easy... But, I've spent two days using multiples and multiples of different ways, that just aren't working: I'm about to dropkick my server cabinet...
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Sep 20, 2007
I've got a big problem that I'm trying to figure out:
I have an address table out-of-which I am trying to select mailing addresses for companies UNLESS a mailing address doesn't exist; then I want to select the physical addresses for that company. If I get multiple mailing or physical addresses returned I only want the most recently edited out of those.
I don't need this for an individual ID select, I need it applied to every record from the table.
My address table has some columns that look like:
[AddressID] [int]
[LocationID] [int]
[Type] [nvarchar](10)
[Address] [varchar](50)
[City] [varchar](50)
[State] [char](2)
[Zip] [varchar](5)
[AddDate] [datetime]
[EditDate] [datetime]
AddressID is a primary-key non-null column to the address table and the LocationID is a foreign key value from a seperate Companies table.
So there will be multiple addresses to one LocationID, but each address will have it's own AddressID.
How can I do this efficiently with perfomance in mind???
Thank you in advance for any and all replies...
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Apr 30, 2008
I have an employee table (empl), and a labor table (lab). The labor table is populated whenever an employee clocks in/out. If an employee does not clock in, they do not appear in the labor table.
I need to capture employees whose time is less than 8 hours, or whoever did not log in at all that date. If I run the following query without a WHERE clause, I get all of my employees, with NULL data in the labor table if they did not log in that day. This is good.
However, if I add
WHERE (DATEDIFF(s, tt.StartTime, tt.EndTime) < 28800) OR (tt.StartTime = NULL)
I get all employees whose time is less than 8 hours, but do not get any of the employees who did not work at all that date, and that's expected... there should NEVER be a NULL in the labor table - it is populated whenever somebody clocks in/out.
So, how would I query the resulting table to get those that worked less than 8 hours, and those that did not?
select
et.EmpNo
et.FirstName,
et.LastName,
tt.StartTime,
tt.EndTime,
DATEDIFF(s, tt.StartTime, tt.EndTime) as Seconds
FROM (select
empl.EmpNum as EmpNo,
empl.FFName as FirstName,
empl.FLName as LastName
from
empl where empl.ftermdate IN ('1900-01-01 00:00:00.000') AS et
LEFT JOIN (select
MIN(lab.StartDt) as StartTime,
MAX(lab.EndDt) as EndTime,
lab.WorkDt as WorkDate,
lab.EmpNum as EmpNo
from
lab where lab.WorkDt in ('2008-03-03 00:00:00.000')
group by lab.WorkDT, lab.EmpNum) AS TT
ON et.EmpNo = tt.EmpNo
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May 1, 2007
hi i have a table as follows:
col1 col2 col3
2 BB 2
1 AB 3
3 CA 3
1 AC 1
2 BA 4
3 CB 2
2 BC 6
1 AA 2
3 CC 5
i want to output the whole row of each unique col1 where its col3 is max, so that i will get the ff result set
1 AB 3
2 BC 6
3 CC 5
i have an idea which is to use a cursor but i don't know the best/fastest way of doing it.
thanks heaps in advance!
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Jul 11, 2007
I am trying to exclude patients from a dataset. There are multiple records per patid in this dataset. I have the following code:
SELECT meds.PATID, meds.MEDICATION, meds.MEDTYPE
FROM meds INNER JOIN patient ON meds.PATID = patient.PATID
WHERE (((meds.MEDTYPE) Not In ("FI (Fusion Inhibitor)","NNUC (","Non-nucleoside","NRTI & NNUC","NRTI (Nucleoside/tide Rev","PI (Protease Inhibitor)")));
I want to exclude all patient records if the patient had any of the above exclusions ever. If they have the exclusion if one record get rid of the rest of the records for that patient. Right now the code only excludes the particular record.
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Jul 5, 2001
My table contains customer records with multiple records per customer. As a result of a query, Im only interested in one record per customer with the highest value of a certain field in the record.
I thought of using DISTINCT, but can I use DISTINCT on a subset of all fields? Or sort the table in a certain way that the query result only shows the first unique records for a customer.
Other ideas are welcome to.
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Dec 28, 2012
I am trying to update a small subset of records of a given table (TRValue) using the records contained in ParcelTemp. The difficult part is getting the summation from a child file, TRGreen, for those same parcels contained in ParcelTemp. Instead of updating just a few records, all the records in TRValue are being updated, with the wrong values of course!
Basically, Update records in TRValue that are equal to:
Year = P.Year
Code = 'LG01'
Parcel = P.Parcel
with the summation of child records where the child records needed are:
Year = P.Year
Parcel = P.Parcel
Code:
UPDATE TRValue SET
Acres = SumAcres,
CurrentMarket = SumMarket,
CurrentTaxable = SumTaxable,
CurrentTaxAmt = ((SumTaxable * D.CertifiedRate) + 0.50)
FROM ParcelTemp P
[code]....
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