How To SELECT The Latest Records?
Sep 21, 2007
Hello!
I have a table, where one of the columns is the date/timestamp of when each row was inserted. I want to be able to extract the most recently inserted rows.
With Sybase (a not so distant cousin of MS SQL) the following works:
select * from TABLE having date = max(date)
With MS SQL, however, the same query does not work:
Column 'TABLE.date' is invalid in the select list because it is not contained in an aggregate function and there is no GROUP BY clause.
What's the solution? Thanks!
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Feb 26, 2014
I have a table T (a1, ..., an, time, id). I need to select those rows that have different id (GROUP BY id), and from each "id group" the row that has the latest field 'time'. Something like SELECT a1, ..., an, time, id ORDER BY time DESC GROUP BY id. This is the wrong syntax and I don't know how to handle this.
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Mar 18, 2014
I have a situation where deleting old records is blocking updating latest records on highly transactional table and getting timeout errors from application.
In details, I have one table called Tran_table1 in OLTP database. This Tran_table1 is highly transactional table, it will receive data for insert/update continuously
While archiving 2 years old records from Tran_table1 into Tran_table1_archive in batches(using DELETE OUTPUT INTO clause), if there is any UPDATEs on Tran_table1,these updates are getting blocked and result is timeout errors in application.
Is there any SQL Server hints to avoid blocking ..
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Dec 3, 2007
Let's say I have a data entry from a pool of employees:
table is as follow:
EmpNo Branch Date Amount
1 A101 11/30/2007 $0.90
1 A101 11/30/2007 $1.20
2 A101 11/30/2007 $0.90
3 A101 11/30/2007 $0.80
How can I select the whole table and only take in 1 unique latest entry if there are multiple entries for the same day, same branch under same employee number?
Thanks! :D
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Feb 13, 2008
Hi,
I hava a table with the following information
CREATE TABLE TEMP1 (REFID INT, REVISION INT, FIELDNAM VARCHAR(10), VALUE VARCHAR(10));
INSERT INTO TEMP1 VALUES(1001, 0, 'A', 'A2');
INSERT INTO TEMP1 VALUES(1001, 0, 'C', 'C2');
INSERT INTO TEMP1 VALUES(1001, 0, 'E', 'E2');
INSERT INTO TEMP1 VALUES(1002, 0, 'A', 'A3');
INSERT INTO TEMP1 VALUES(1002, 0, 'B', 'B2');
INSERT INTO TEMP1 VALUES(1002, 0, 'E', 'E3');
INSERT INTO TEMP1 VALUES(1001, 1, 'A', 'A4');
INSERT INTO TEMP1 VALUES(1001, 1, 'E', 'E4');
Here based on latest revision and refid I should get the fieldnam and value.
Expected output:
REFID FIELDNAM VALUE REVISION
1001 A A4 1
1001 E E4 1
1002 B B2 0
1001 C C2 0
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Dec 16, 2007
Hi all,
I have a question regarding SQL Server Performance and would be grateful for a tip. Let's say I have a DB with 50.000 records. These records belong to 1.000 different datasets, so there is 1 actual and 49 historical data records. For example a company with 1000 employees has a database where each year a new record is created for each employee so after 50 years they have 50.000 records (50 years x 1000 employees). 1 record is actual, and 49 are historical. What is the best way to store this? Main target is performance for the enduser, so when an employee clicks "See all my records" it should be fast. But on the other hand the application mainly works only with the current year. Additionally it should also be fast for the boss of business unit who wants to see the latest records of his e.g. 100 employees. I have some ideas and would like to get your opinion:
1. Retrieve by latest date
Just store the records. To get the current year just select the record with the latest year. Disadvantage might be with larger databases: If the company switches to store the requests per month, each user would have 600 records (12 months x 50 years). Each time the latest record should be retrieved, 600 recards have to be compared regarding the latest date (or sorted by date descending using Top1, but this might be a problem for the boss then? Or could this be combined for a group if the boss wants to see all the latest records of his employees?).
2. Add a 'IsCurrent'-Flag
Each time a new record is stored it should be compared to the latest record. If it is newer, the 'IsCurrent'-Flag should be removed and then checked on the new record. This should be fast processed (because on saving a new record it only needs to be checked against the currently 'IsCurrent'-flagged record), and for retrieving the current record no further comparison is necessary. But how could I do this? I need to update the "AddRecord"-SP with this comparison, but I don't know how to do this.
Currently number 2 is my favorite, I just don't know how to do it ;-) What is your opinion about it, and could you include an example?
Thanks
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Aug 21, 2014
select
DayRank = ROW_NUMBER() OVER(ORDER BY a.datedel DESC),
a.order,a.line,a.datedel,a.recpt,b.status,
b.item,b.t_sup
from historytbl a
inner join order b
on a.order = b.order
and a.line = b.line
and a.status =4
group by a.order,line,a.datedel,a.recpt,b.status,b.item,b.sup
The query is returned the results below.
Rank OrderLineDateDelrecptitemsup
----- -------------------------------
1aaa102014-18-08rc1zzz1231122
2bbb202014-08-08rc2zzz1231122
3ccc302014-04-08rc3zzz1231122
4ddd902014-08-11rc6yyy123333
5eee102014-05-11rc7yyy123333
5fff90 2014-02-11rc8yyy123333
6ggg102014-05-10rc9qqq123444
7hhh502014-04-10rc0qqq123444
8iii102014-04-10rc5rrr123555
However, I want to have the query only show most recent two records for each group of item and sup, please see the results I want below.
Rank OrderLineDateDelrecptitemsup
----- -------------------------------
1aaa102014-18-08rc1zzz1231122
2bbb202014-08-08rc2zzz1231122
4ddd902014-08-11rc6yyy123333
5eee102014-05-11rc7yyy123333
6ggg102014-05-10rc9qqq123444
7hhh502014-04-10rc0qqq123444
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Mar 17, 2015
I have a table where i am inserting into temp table, I mean selecting the records from existing table. From this how can i get latest records.
create table studentmarks
(
id int,
name varchar(20),
marks int
)
Insert into dbo.studentmarks values(1,'sha',20);
[Code] ....
How to write a sql query to get the below output
studentname totalmarks
sha 90
hu 120
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Mar 26, 2012
I have 2 tables:
TransactionsImport (which is the destination table)
TransactionsImportDelta
I need to do the following:
Get the records with the latest date and time in the destination table TransactionsImport
Get the records with the latest date and time in the destination table TransactionsImportDelta table
Insert the records from the TransactionsImportDelta table into TransactionsImport that have a greater date & time than the current records in TransactionsImport table.
Problem is date & time are in separate columns:
Table structure:
Date Time ID
2011121305154107142201008300100
2011121305154122B1L13ZY0000A07YD
2011121304504735142201090002600
2011121304504737142201095008300
2011121304504737142201090002600
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Mar 17, 2006
I have a SQL query I need to design to select name and email addressesfor policies that are due and not renewed in a given time period. Theproblem is, the database keeps the information for every renewal inthe history of the policyholder.The information is in 2 tables, policy and customer, which share thecustid data. The polno changes with every renewal Renewals in 2004would be D, 2005 S, and 2006 L. polexpdates for a given customer couldbe 2007-03-21, 2006-03-21, 2005-03-21, and 2004-09-21, with polno of1234 (original policy), 1234D (renewal in 2004), 1234S (renewal in2005), and 1235L (renewed in 2006).The policy is identified in trantype as either 'rwl' for renewal, or'nbs' for new business.The policies would have poleffdates of 2004-03-21 (original 6 monthpolicy) 2004-09-21 (first 6 month renewal) , 2005-03-21 (2nd renewal,1 year), 2006-03-21(3rd renewal, 1 yr).I want ONLY THE LATEST information, and keep getting earlyinformation.My current query structure is:select c.lastname, c.email, p.polno, p.polexpdatefrom policy p, customer cwhere p.polid = c.polidand p.polexpdate between '2006-03-01 and 2006-03-31and p.polno like '1234%s'and p.trantype like 'rwl'and c.email is not nullunionselect c.lastname, c.email, p.polno, p.polexpdatefrom policy p, customer cwhere p.polid = c.polidand p.polexpdate between '2006-03-01 and 2006-03-31and p.polno like '1234%'and p.trantype like 'nbs'and c.email is not nullHow do I make this query give me ONLY the polno 123%, or 123%Sinformation, and not give me the information on policies that ALSOhave 123%L policies, and/ or renewal dates after 2006-03-31?Adding a 'and not polexpdate > 2006-03-31' does not work.I am working with SQL SERVER 2003. Was using SQL Server 7, but foundit was too restrictive, and I had a valid 2003 licence, so I upgraded,and still could not do it (after updating the syntax - things likeusing single quotes instead of double, etc)I keep getting those policies that were due in the stated range andHAVE been renewed as well as those which have not. I need to get onlythose which have NOT been renewed, and I cannot modify the database inany way.*** Free account sponsored by SecureIX.com ****** Encrypt your Internet usage with a free VPN account from http://www.SecureIX.com ***
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Jun 15, 2006
Itemlookup tableField names : index_id (primary key), itemno, description.It has a child table, which is ItemPriceHistory tableThe relationship to the child table is one (parent table)-to-many(child table). - It is possible to have no child record for some rowsin the parent table.ItemPriceHistory tableField names: index_id (primary key), itemlookupID (foreign key of theItemlookup table), date begin, priceIt is a child table of the itemlookup table.How can I get all records for both tables with the latest begin date ifexists?I also need to show the records in the parent table if there is norelated record in the child table.Please help
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May 24, 2005
Hello,
If I have a TransactionTableT including with fields like this:
TransactionDateDT
QuantityIN
ItemID,
ItemCodeCH
ItemNameCH
PriceFL
Each time the user make an entry a new record is inserted.
How can I pull only the latest (TransactionDateDT) record for each item. I've tried MAX(TransactionDateDT), but how can I get ItemCodeCH, ItemNameCH and PriceFL.
Basically I need to create a report with the latest price for each item.
Any feedback welcome!
Edi
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Apr 23, 2007
Hi!
I would like to select the 10 latest logged in users and then display them in a gridview-control....
But Iam not good at SQL, so I would really appreciate if someone could help me to write the select-part for this!!
(I use the database 'ASPNETDB.mdf', which is automatically created by VVD 2005 Express Edition)
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Dec 3, 2012
I want to select the latest single value based on ProductID. The value should be the last value inserted from the Date column.
I want to use this as part of a query to delete this value when a button is slected in ASP.Net C#.
Here is my code which does not work
select basketID, SessionID, UserID, MAX(Date), productID from ShoppingBasket
where userID = '1'
group by productID, basketID, SessionID, UserID
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Dec 8, 2013
I have a equipment table and the equipment has a coding for each place / location or custody it has had during its life. I need to select the latest (newest) row for each piece of equipment by getting the newest from_date and to_date field combination.The following is an example. I know how to get MAX date for one column but not with two columns (from and to DATES).
ID
NAME
FROM_DATE
TO_DATE
[code]...
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Oct 30, 2007
I have the following table called BADSANTA:
varchar(30) datetime
NAME WHENBAD
OJ Simpson 2007-1-12 xx:xx:xx:xxx
OJ Simpson 2007-4-2 xx:xx:xx:xxx
Monica Lewinsky 2006-7-4 xx:xx:xx:xxx
Monica Lewinsky 2006-10-31 xx:xx:xx:xxx
Bill Clinton 2006-7-4 xx:xx:xx:xxx
Bill Clinton 2006-10-31 xx:xx:xx:xxx
Bart Simpson 2006-11-2 xx:xx:xx:xxx
Bart Simpson 2006-2-25 xx:xx:xx:xxx
Bart Simpson 2005-07-27 xx:xx:xx:xxx
I want the records of the persons latest WHENBAD date. It should return one recordset for each person.
Thanks in advanced.
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Nov 29, 2014
I have a select query that results all the dbs and their several backup dates×. Howover I only need the latest backup dates for each of the db.How can I write that in tsql?
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Nov 2, 2006
Hello
Im searching for a solution to set all matrix row or cell the same height.
it schoud looks like this example:
This is a simple matrix
test a
text b
text c
text d
text e
text f
text g
This is a matrix with all the same row-height.
test a
text b
.
text c
.
.
text d
text e
text f
text g
.
.
Thx you a lot
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Aug 16, 2007
Dear All
I need to cerate a SP that SELECTS all the records from a table WHERE the first letter of each records starts with 'A' or 'B' or 'C' and so on. The letter is passed via a parameter from a aspx web page, I was wondering that someone can help me in the what TSQL to use I am not looking for a solution just a poin in the right direction. Can you help.
Thanks Ross
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Aug 6, 2007
SELECT Top 10 Name, Contact AS DCC, DateAdded AS DateTimeFROM NameTaORDER BY DateAdded DESC
I'm trying to right a sql statement for a gridview, I want to see the last ten records added to the to the database. As you know each day someone could add one or two records, how can I write it show the last 10 records entered.
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Aug 17, 2005
I have an unusual problem. I am using VB.Net 2003 and sqlexpress using .NET dataset to insert records into an timecards table. After inserting several records I tried a 'Select * from timecards' and the inserted records where not selected. if I 'select * from timecards order by employee' ( or any other field) the inserted records are selected! The table was created by an Access Upsize command.
Any suggestions?
Thanks!
GordonG
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Aug 30, 2006
A basic select statement to be used.
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Apr 30, 2007
Hello,I am selecting some articles and some comments related with it:SELECT a.ArticleID, a.Title, a.Content, c.CommentId, c.Title, c.Comment, u.UserName AS ArticleAuthorName, u.UserEmail AS ArticleAuthorEmailFROM Articles aINNER JOIN Users u ON a.AuthorID = u.UserIDINNER JOIN Comments c ON a.ArticleID = c.ArticleIDI have 2 problems which I am trying to solve:1. Comments table also have an AuthorId So for each comment I also want to join to Users table and get the author name and email. How can I do this?2. I want to select all Articles even if it has comments or not. Can I use Inner Join or should I use Left Join? Is Outer Join still available in SQL 2005?Thank You,Miguel
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Jul 14, 2007
Hi there,
I'm new to SQL.
I have encoutered a problem, I know how to select top 10 records from the database, but what about 11-20?
I can't use
Quote:
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Jan 12, 2006
I have a simple table something like this
ID First Last
1 Bob Hope2 Charles Draw3 Mark Andrews
Etc, etc
I need the SQL statement select the last 10 records in the table, so if the highest ID id 82 I need all fields of records with ID 72-82
Help appreciated, i'm sure it must be simple enough buy mind is blank.
thanks
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Jul 14, 2007
Hi there,
I'm new to SQL.
I have encoutered a problem, I know how to select top 10 records from the database, but what about 11-20?
I can't use
Quote: SELECT TOP 10 * FROM table WHERE id > 10
because even though my ID is auto numbered, but I have deleted some entries.
Does anyone have good solutions?
p.s I tried this and doesn't work either
Quote: SELECT TOP 10 * FROM table WHERE id IN(SELECT TOP 20 * FROM table ORDER by date DESC) ORDER BY date ASCENDING
TIA
-noPcz
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Aug 16, 2005
Stijn writes "Hello,
I have SQL 7 with WINDOWS 2000 SERVER
My problem is that i am looking for a script
my db is for equipement inventory
how can i select all the records from a room,
if this room (room1)has less of 100 records he needs te go to the follow room(room2), en the next room until he's got 100 records,
sorry for my english"
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Aug 18, 2005
Mack writes "I want to select last 2 records from a table AA which has following 5 records.
111
222
333
444
555
There is no primary key.
Any tip will be really appretiated.
Thanks for taking time to read it."
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Oct 4, 2007
Hi,
How to write a query to get top 50 distinct records from a table.
I mean I have a table 'C1_Subscribers' with a field name 'Nickname'. Here I need to select top 50 non-repeated nickname only.
Can anybody can help me!!
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Jul 23, 2005
Hello,Firstly, sorry for my english.I have problem with creating SQL statement. I am beginner and I think thatit is very easy to do. Look -I have to get only the last 20 records from table ABC (f.eg.) and accordingto that how to create the SQL statement? F.eg. SELECT name, forename, dateFROM abc WHERE....You know - how to finish the statement to get only 20 records lastlyinserted into the table?Thanks and I am waiting for helpfull answers.
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Jan 2, 2008
I have a table, productTable, that contains a ProductID column, a bunch of attribute columns like manufacturer etc, and a GroupID. Many different productIDs can share the same GroupID which means that they are basically the same product with one different attribute such as color. What I'm trying to do is select all the products in the TOP N GroupIDs. I'm using this to paginate my query results. I tried this which does not work:
SELECT DISTINCT TOP 10 *
FROM productTable
WHERE GroupID NOT IN
(SELECT DISTINCT TOP 10 GroupID
FROM productTable
ORDER BY GroupID)
ORDER BY GroupID
This returns the TOP 10 rows, but I would like all the ProductIDs for the TOP 10 GroupIDs
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Jul 20, 2005
I can't get my head around this:I want to select all IDs from table A that do not have a related record intable B according to some condition:Table A contains, say, Parents and table B contains Children. I want toselect all Parents that have no children called "Sally" (this is a noddyexample, reminds me of being at Uni again :) ).Any ideas?Thanks
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Apr 29, 2007
Hello,I have two tables, Articles and Comments, with the following columns:Articles - [ArticleId] (PK), [ArticleTitle], [ArticleText], [ArticlePubDate]Comments - [CommentId] (PK), [ArticleId] (FK), [CommentTitle], [CommentText]I need to display on a web page the articles published during the last week and their comments.What I need is:1. Get Articles (DONE) 2. Get Comments for each ArticleThe solution I see are:1. Create a Stored procedure that somehow outputs 2 tables: Articles and Comments associated with those articles2. Create 2 Stored procedures: The first one outputs the articles. The second output all comments given an article ID In this case, while the data is being displayed on the page it will load the comments for each article. The problem is that I will have many round trips to the server.I know how to use (2) but this would give me many round trips to the database.Could someone help me out with this?Thanks,Miguel
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