Deleting Large Amount Of Data From The Table......
May 18, 2001
I need to delete data from a particular table which has more than half a million records. The data needs to be deleted is more than 200,000 records from the table. What is the best way to delete the data from the table other than importing into a temporary table and performing the same operation?
Let me know if the strategy to be followed is okay.
1. Drop all the triggers
2. Drop all the indexes
3. Write a procedure with a loop setting ROWCOUNT to 1000 and delete the records. ( since if I try to delete all the rows it will give timeout error )
The above procedure will delete 1000 records for each batch inside the loop till it wipes out all the data for the specified condition.
4. Recreate Indexes and Triggers.
Please let me know if there are any other optimal solution.
Thanx,
Zombie
View 2 Replies
ADVERTISEMENT
Jul 20, 2005
I have a combo box where users select the customer name and can eithergo to the customer's info or open a list of the customer's orders.The RowSource for the combo box was a simple pass-through query:SELECT DISTINCT [Customer ID], [Company Name], [contact name],City,Region FROM Customers ORDER BY Customers.[Company Name];This was working fine until a couple of weeks ago. Now wheneversomeone has the form open, this statement locks the entire Customerstable.I thought a pass-through query was read-only, so how does this do atable lock?I changed the code to an unbound rowsource that asks for input of thefirst few characters first, then uses this SQL statement as therowsource:SELECT [Customer ID], [Company Name], [contact name],City, Region Fromdbo_Customers WHERE [Company Name] like '" & txtInput & "*' ORDER BY[Company Name];This helps, but if someone types only one letter, it could still bepulling a few thousand records and cause a table lock.What is the best way to populate a large combo box? I have too muchdata for the ADODB recordset to use the .AddItem methodI was trying to figure out how to use an ADODB connection, so that Ican make it read-only to eliminate the locking, but I'm striking outon my own.Any ideas would be appreciated.Roy(Using Access 2003 MDB with SQL Server 2000 back end)
View 2 Replies
View Related
Jan 12, 2006
hello
i have just created a test database and now need to insert a large number of records into one of the tables, we were thinking of about 1 million records, has anyone got an sql script that i could use to create these records
cheers
john
View 6 Replies
View Related
Oct 7, 2005
This is a general question on the best way to import a large amount of datato a MS-SQL DB.I can have the data in just about any format I need to, I just don't knowhow to import the data. I some experience with SQL but not much.There is about 1500 to 2000 lines of data. I am looking for the best way toget this amount of data in on a monthly basis.Any help is greatly thanked!!Mike Charney
View 5 Replies
View Related
Jul 23, 2005
Hi,I am using SQL 2000 and has a table that contains more than 2 millionrows of data (and growing). Right now, I have encountered 2 problems:1) Sometimes, when I try to query against this table, I would get sqlcommand time out. Hence, I did more testing with Query Analyser and tofind out that the same queries would not always take about the sametime to be executed. Could anyone please tell me what would affect thespeed of the query and what is the most important thing among all thefactors? (I could think of the opened connections, server'sCPU/Memory...)2) I am not sure if 2 million rows is considered a lot or not, however,it start to take 5~10 seconds for me to finish some simple queries. Iam wondering what is the best practices to handle this amount of datawhile having a decent performance?Thank you,Charlie Chang[Charlies224@hotmail.com]
View 5 Replies
View Related
Jul 23, 2005
I have SQL 2000 and need to retrieve fairly large amout of data (~50.000 characters) in XML format and then insert it into the field ofthe text type.As 'FOR XML' can't be used with either local variables, INSERT INTO orSELECT INTO this makes "XML support" quite useless in many aspects.Can anyone please help me in solving this.Thanks a lot for your help and time.Pavel
View 1 Replies
View Related
Sep 30, 2005
i need to retrieve a large amount of data from the sql server database and make changes to one field and put the data back using a console application. how do i do it?
View 3 Replies
View Related
May 5, 2003
Hi,
My application needs to retrieve data from a table which has more than 15 lakh records. The records keep increasing in thousands every 15 days.
Is there anyway i can reduce the time to retrieve? basically i have a select statement with a few conditions and a clause for the id's of these records.
View 2 Replies
View Related
Jan 30, 2007
Hi Experts:
We have several database linked via merge replications. Due to business requirements, we need to delete 5M rows in one table, we did it on one subscriber. However, the publisher kept uploading the deletion operations from the subscriber and blocked any downloading operation from publisher to subscriber. How can we acceralte the replications now as this has already operated in 2 days, and will continue 1-2 days? Is it possible to set the publisher take the downloading before uploading? How to speed up large amount data deletion operations in replication environment?
Thanks in advance!
Ron
View 4 Replies
View Related
Sep 1, 2006
I have an interesting challenge. we are not allowed to allow users direct access to data in our SQL Server. Audit requires us to take the data out of our production server and pass it to the user. my situation is i have a table in SQl with over 100,000 records and growing. i want to pass that to an access data base. i am utilizing DTS and a data transform.
i s there a better way? the package is running slow and even appears to freeze. i see this amount of data as growing as well.
Don S
View 1 Replies
View Related
Jul 20, 2007
Recently we added a new table into our SQL2000 database specifically to store scanned in images of documents. This new table contains a PK field, a couple of datetime fields, a couple of char(1) fields and one 'image' field.
Before adding this table, the database size was approx 6GB. Six months after adding this new table, the database has grown to 18GB - 11GB of this is due to the scanned in images.
Would this new table affect the SQL performance with regards to accessing other data in the database that has nothing related to the new table?
If so, would moving this new table into it's own database be recommended?
Thanks
Rod
View 1 Replies
View Related
Feb 1, 2008
A friend reminded me of a problem we tried to solve a few years ago and were unsuccessful. Below is a copy of the email he sent me. We would very much appreciate any ideas from the community. Thanks!Lets start with a simple schema where you have 4
tables:
View 3 Replies
View Related
Apr 23, 2007
guys,I have a project need to move more than 100,000 records from onedatabase table to another database table every week. Currently, usersinput date range from web UI, my store procedure will take those dateranges to INSERT records to a table in another database, then deletethe records, but it will take really long time to finish this action(up to 1 or 2 hours).My question is if there is some other way I should do to speed up theaction, I am thinking about use bcp to copy those records to datafileand then use bcp to insert it into SQL Server table. Is this the rightway to do it or should I consider other solution (then, what is thesolution.)Thanks a lot!
View 8 Replies
View Related
Feb 22, 1999
We have created a databse in SQL Server 7 for support issues.
We are having trouble with only one aspect of the databse and that is the body of the supported problem.
The databse is basically a Question/Answer Support database whch house Frequently Asked Questions.
When the user does a search on a specific problem they have a list of matching questions shows on the screen (links).
When the question is clicked on it shows the Questions with the Answer of possible fixes.
Our problem lies in the fact that SQL server is truncating the Answer portion. I have tried different Data Types with maximum lengths with no success it keeps truncating it.
Right now I am on Data Type nvarchar with a length of 4000.
If anyone has any pointers on how to solve this problem all input is appreciated. You can post here to the forum or e-mail me directly at jason@flnet.com
Thank You.
-JR
View 2 Replies
View Related
Jul 23, 2005
Hello,I have experienced that some of my tables occupies an extremely large amountof pages but with few rows. An example is a table with 37 rows over 22000pages !. The columns are simple integer and char. I fixed the problem byintroducing a clustered index. Now it only uses 1 page. But can anyoneexplain this behaviour in SQLServer 2000 ?regards Jakob Mathiasen
View 4 Replies
View Related
Feb 25, 2007
Is there any way how to create indexies after insertion of any
number of records (I dont want to create index after insertion of every record,
but for example after insertion of 1000 records) ?
I heard it should be possible with „bulk insert“ or with
transactions. Is it right ? I need do this with MS SQL Server 2005 (Workgroup
edition).
Thank you for your ideas!
Jan
View 5 Replies
View Related
Jun 27, 2005
What datatype to use when inserted large amount of Text ??
View 6 Replies
View Related
Mar 10, 2004
I have a large amout of dbs (150) on my SQL Server and when using the enterprise manager to do administrational tasks like Backup, Restore etc. it takes 1.5 hour to open the Database folder. Server is 2xP4, 3Gb RAM. Any ideas on how to manage this number of dbs on the same server and instance of SQL.
Cheers!
View 2 Replies
View Related
Jul 29, 2014
I have been in contact with my Hosting provider who have told me that my website seems to be making a large amount of SQL commands, and locking the tables.
View 3 Replies
View Related
Jan 18, 2008
Hello all - I currently have a project that has a gridview on the front end. The user can select multiple items from this grid, hit a button and all of the selected records should be updated in the process. However, this resultset can have a large amount of data coming back, and I'm stumped on how to pass all of the ID's to the sp. I'd rather not call the SP for each record selected, as there could be 1,000 items selected, and well, I'd rather not call the SP 1000 times :p. I thought of generating a comma delimited list as I'm looping through the grid and using dynamic sql, but the IDs are about 6-7 numbers long, and including comma, would take up almost all of the max space in a varchar.
Are there any good solutions to this problem? Passing the items as an array? Generating a data table in .NET and passing that?
Any help would be appreciated.
-Jaime
View 4 Replies
View Related
May 4, 2015
How can I make a recursive algorithm in TSQL without using a large amount of resources?
New hires are put on a 6 month probation period, Their probation ends at the 6 month mark + sick time isnull(floor(sick_hours/8),0) they accrued during that 6 months. Their accrued sick days are added to the 6 month probation period to establish a new probation end date.
I then have to do the following loop:
1)Determine if any of the days between the original probation end date and the new probation end date have any weekend days or holidays for a particular employee.
2)If it does, I add those days to the new probation end date to create a newer probation end date.
a.I then go back up to step 1).
3)If it does not, I jump out of loop and look at the next employee on probation.
Note: I already have coding for determining number of sick days accumulated during an employee’s probation period. Recursive CTE? Recursive function? Other?
View 0 Replies
View Related
May 25, 2006
I am having a small problem.
When I generate a report with a large amount of text data (Paragraphs) the report will not split the text between two pages.
It will move the entire text box to the next page leaving a large amount of space on the previous page.
I tried every control on the page to render this. I tried textboxes, tables, lists, rectangles, subreports, etc..
The data is stored in a SQL table using a text data type (there can be a large amount of data entered into these database.
Any help on this would be great. I like reporting services, but there are just a few bugs.
I am using Reporting Services 2000 with Service Pack 2 and Hotfix
http://support.microsoft.com/?kbid=912424 (That fixed a different PDF rendering issue) and this problem was occuring prior to this hotfix.
Thanks in advance
View 5 Replies
View Related
Apr 16, 2008
Hi every one,
I am facing problem in printing the reports from browser and also when i export it to pdf,the problem i am facing is blank pages are coming when report column getting the large amount of text around 2500 characters into column value.
can any one help me in this issue?. if the report is getting acceptable amout of data it is printing in proper way i.e no balnk pages at all.i maintained all properties like margins+body size < page size.
View 4 Replies
View Related
Jun 1, 2006
Hi ,
How to INsert and Update Large Amount of Records (4 Lacs) into Destination Table Through Business Intelligence Studio Using SSIS Pacakge .How to Achieve this .i tryed with left outer join & conditional split but the problem its not able to insert & update records simultaneously . can any one give me a sample .
Thanks & Regards
Jeyakumar.M
View 3 Replies
View Related
Sep 14, 2007
I have a table with about 10 million rows, its been logging data incorrectly and I want to start again.
DELETE FROM tblLog
I just get a message about the server timing out, what can I do?
Thanks
View 5 Replies
View Related
Mar 9, 2007
I have a table where I want to delete some data from but I get this error.
You might have a record that has a foreign key value related to it, or you might have violated a check constraint.
What to do????
View 1 Replies
View Related
Mar 13, 2014
Is this close to the correct syntax for a stored procedure for deleting all the data from a particular table... or is there a better way?
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE PROCEDURE TruncateTmpBank
[Code] ....
View 3 Replies
View Related
Jan 20, 2014
I have to delete a ton of data from a SQL table. I have a unique identifier called the version. I would like to use if not in these versions then delete. I tried to using the statement below, but learned the hard way that it created an error this is the message I got....
Msg 9002, Level 17, State 4, Line 3...
The transaction log for database 'MonthEnds' is full due to 'ACTIVE_TRANSACTION'.
I was reading about truncate, I am not sure how I would do this or how I would setup the statement.
Delete Products
where versions were not in (('48459CED-871F-4971-B888-5083990332BC','D550C8D3-58C7-4C74-841D-1C1675F19AE3','C77C7817-3F04-4145-98D3-37BB1610DB35',
'21FE83FA-476D-4604-80EF-2ED57DEE2C16','F3B50B81-191A-4D71-A406-011127AEFBE1','EFBD48E7-E30F-4047-909E-F14DCAEA4181','BD9CCC41-D696-406B-
'C8BEBFBC-D362-4D0F-A555-B281FC2B3023','EFA64956-C2CF-41FC-8E21-F060597DAFCB','77A8DE56-6F7F-4490-8BED-AA6809B947EF','0F4C1E5F-B689-4DCB-
[code]....
View 2 Replies
View Related
Feb 13, 2008
Hi gurus,
The data is automaticaly deleting from one perticular table at every night from last week onwords. I have created a delete trigger to find it out. But Nothing was recorded. There is no jobs except maintainance plans. Nothing in event viewer too. The database recovery model is simple. How can i solve this problem
Please advise me to solve this problem
Thanks
Krishna.
View 11 Replies
View Related
Jul 20, 2005
I have an entry form allowing customers to enter up to 15 skus (productid) at a time, so they can make a multiple order, instead of enteringone sku, then submitting it, then returing to the form to submit thesecond one, and so forth.From time to time, the sku they enter will be wrong, or discontiued, soit will not submit an order.Therefore, when they are done submitting their 15 skus through the orderform, I want a list showing them all of those skus that came back blank,or were not found in the database.I'm doing this by creating two tables. A shopping cart, which holds allthe skus that were returned, and a holding table, that holds all theskus that were submitted. I want to then delete all the skus in theholding page that match the skus in teh cart (because they are goodskus) which will then leave the unmatched skus in the holding table.I'll then scroll out the contents of the holding table, to show them theskus that were not found in the database.(confused yet?)So what I want to do is have some sql that will delete from the holdingtable where the sku = the sku in the cart. I've tried writing this, butit dosn't work.I tiried this delete from holding_table where sku = cart.skuI was hoping this would work, but it dosn't. Is there a way for me to dothis?Thanks!Bill*** Sent via Developersdex http://www.developersdex.com ***Don't just participate in USENET...get rewarded for it!
View 2 Replies
View Related
Mar 20, 2008
Hi Everybody,
Kindly let me know if there is a way of deleting data from primary table without deleting data from its corresponding foreign key table.
Thanks & Regards
View 2 Replies
View Related
May 30, 2006
I can run a select to retrieve data using a prefix 'a' for the specific table involved. However when I try to run a delete using the same criteria it fails telling me
Msg 102, Level 15, State 1,.......Line 1
Incorrect syntax near 'a'
The Select statement looks like:
select count(*) from schema.table a where a.customer_id=1234
The Delete looks like:
delete from schema.table a where a.customer_id=1234
What am I doing wrong here? and how can I prefix the table, because the command I want to run is much more complicated than the example above and it needs the prefix
View 3 Replies
View Related
Jan 26, 2004
Hi,
I have some problems with our database which is growing too large, and was hoping someone might have some tips on what I can do!
I have about 100 clients, each logging about 10 000 rows of status logs a day. So after just a few days the db is growing very large.
At present it's manageable, since I don't need to "dig" into the logs more than a few times a day. The system it self is not affected by the size of the log or traffic on the server. But it will increase to about 500 clients in 2004, and 1000-1500 in 2005. So I really need a smarter solution than what I have today to be able to use the log efficiently.
98-99% of these rows are status-messages which are more or less garbage during normal operation. But I still need to keep them in case an error occurs, and we need to go back an hour or two (maybe a day) to see what went wrong. After 24-48 hours these 98-99% are of no use. I do however like to keep the remaining 1-2%, they are messages like startup, errors, etc. Ideally they should be logged in two separate tables by the clients, but unfortunatelly I cannot make the clients change their logging.
This presents problems on multiple levels. Mainly in searching, which often times out, but also with backup and storagespace. At the moment I check the system for errors, and every other day I just truncate the log-file. It works, but it's not exacly elegant......
The server is a 1100 MHz P3 / 512MB / Windows 2000 Server /
SQL Server 2000. Faster hardware would help, but the problem is more of a "bad design" than "slow hardware" problem.
My log is pretty simple, as follows:
LogId - int - primary key - clustered index
ClientId - int - index asc
LogTypeId - int - index asc
LogValue - nvarchar[2500], ikke index
LogTimeStamp- datetime - index asc
I have deducted 3 different solutions:
Method 1:
Simply run "Delete from db_log where logtyipeid <> stuff_I_want_to_keep".
This is the simplest and the one i prefer, but it takes too long time to complete. Any tips to speed this process up?
Method 2:
Create a trigger which runs something like "Delete from db_log where logtypeid <> stuff_I_want_to_keep and date < today_minus_two_days" every hour or so. This will ensure that the db doesn't grow to large. But if I'm away from work a few days we might loose data we'd wanted to keep.
Method 3:
Copy what I want to keep into another table, and empty the log. Sort of like "Insert into db_log_keep stuff_to_keep; drop db_log; create table db_log; " (or truncate, but that takes a long time too)
But then I would be stuck with two log tables, "48-hour_db_log" and "db_log_keep". I could use a view to "union" them so they would appear as a single table, but that's not ideal either.
However, it seems as this method is what will work best for my set-up, unless there are other suggestions??
Method 4:
...eagerly awaiting ideas!!! :-)
(Also, whatever tips and/or links to info on maintaing VLDB's are greatly appreciated. )
Thanks in advance for your help! :-)
Nikolai
View 4 Replies
View Related
