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.
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.
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 ..
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?
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
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?
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
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
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 ***
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
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.
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)
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).
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.
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?
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.
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.
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.
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
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
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
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,
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.
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.
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
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
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
