Inserting Large Amounts Of Data
Sep 8, 2005
Does anyone have ideas on the best way to move large amounts of data
between tables? I am doing several simple insert/select statements
from a staging table to several holding tables, but because of the
volume it is taking an extraordinary amount of time. I considered
using cursors but have read that may not be the best thing for this
situation. Any thoughts?
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Aug 12, 2005
I am running into a problem inserting large amounts of text into my table. Everything works well when I test with a few simple words but when I try to do a test with larger amounts of text (ie 35,000 characters) the appropriate field is left blank. The Insert still performs (all the other fields recieve their data, but the "Description" field is blank. I have tried this with both "text" and "ntext" datatypes. I am using a stored procedure with input parameters. As I mentioned, the query goes off flawlessly with small amounts of data (eg "Hi there!") but not with the larger amount.I check and the ntext field claims to be able to accept 1073741823 bytes of data. Is there some other thing I should consider with large amounts of text?
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Mar 31, 2008
Hi,
I was wondering if any one could help me, I need to store large amounts of data in my database, at present I have it set to nvchar (8000), I've looked around and noticed you can use text which stores up to 2 million, but is slow in displaying the information.
Any ideas or points in the right directions would be great.
Thanks
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Jul 20, 2005
We are looking to store a large amount of user data that will bechanged and accessed daily by a large number of people. We expectaround 6-8 million subscribers to our service with each record beingapproximately 2000-2500 bytes. The system needs to be running 24/7and therefore cannot be shut down. What is the best way to implementthis? We were thinking of setting up a cluster of servers to hold theinformation and another cluster to backup the information. Is thispractical?Also, what software is available out there that can distribute querycalls across different servers and to manage large amounts of queryrequests?Thank you in advance.Ben
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Jun 24, 2005
I have a dataset with 300,000 records and I'm getting the following error with MS Reporting Services. "An error has occurred during report processing. Exception of type System.OutOfMemoryException was thrown. any help with this would be highly appreciated.
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May 8, 2007
Greetings
I need to be able to graph roughly about 150 employees/ supervisor and their monthly cell phone usage in minutes. I understand that I will need to group this on say one graph for every ten employees so it doesn't look messy and cluttered. I have read some threads here but they dont seem to work for me.
So again each supervisor has 100+ subordinates and I need to graph theie phone usage by month
thoughts???
km
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Apr 20, 2001
p.s. my email was incorrect in the last mail.
Hi all,
is there a sql 2k thread. Am interseted in finding out what the largest database size of a sqlserver database people have worked with.
We have a 1.2 Terabyte db with about 150-200 million new rows being processed everyday. Would like to share some thoughts on this with other people who are working with this much data and what they are doing with it.
bhala
----------------------------------------
Please check us out at: http://www.bivision.org/bivision
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Jul 20, 2005
I'm in the process of migrating a lot of data (millions of rows, 4GB+of data) from an older SQL Server 7.0 database to a new SQL Server2000 machine.Time is not of the essence; my main concern during the migration isthat when I copy in the new data, the new database isn't paralyzed bythe amount of bulk copying being one. For this reason, I'm splittingthe data into one-month chunks (the data's all timestamped and goesback about 3 years), exporting as CSV, compressing the files, and thenimporting them on the target server. The reason I'm using CSV isbecause we may want to also copy this data to other non-SQL Serversystems later, and CSV is pretty universal. I'm also copying in thisformat because the target server is remotely hosted and is notaccessible by any method except FTP and Remote Desktop -- nodatabase-to-database copying allowed for security reasons.My questions:1) Given all of this, what would be the least intrusive way to copyover all this data? The target server has to remain running and berelatively uninterrupted. One of the issues that goes hand-in-handwith this is indexes: should I copy over all the data first and thencreate indexes, or allow SQL Server to rebuild indexes as I go?2) Another option is to make a SQL Server backup of the database fromthe old server, upload it, mount it, and then copy over the data. I'mworried that this would slow operations down to a crawl, though, whichis why I'm taking the piecemeal approach.Comments, suggestions, raw fish?
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Oct 21, 2007
HiI have a VB.net web page which generates a datatable of values (3 columns and on average about 1000-3000 rows).What is the best way to get this data table into an SQL Server? I can create a table on SQL Server no problem but I've found simply looping through the datatable and doing 1000-3000 insert statements is slow (a few seconds). I'd like to make this as streamlined as possible so was wondering is there is a native way to insert all records in a batch via ADO.net or something.Any ideas?ThanksEd
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Jul 20, 2005
Hello,Currently we have a database, and it is our desire for it to be ableto store millions of records. The data in the table can be divided upby client, and it stores nothing but about 7 integers.| table || id | clientId | int1 | int2 | int 3 | ... |Right now, our benchmarks indicate a drastic increase in performanceif we divide the data into different tables. For example,table_clientA, table_clientB, table_clientC, despite the fact thetables contain the exact same columns. This however does not seem veryclean or elegant to me, and rather illogical since a database existsas a single file on the harddrive.| table_clientA || id | clientId | int1 | int2 | int 3 | ...| table_clientB || id | clientId | int1 | int2 | int 3 | ...| table_clientC || id | clientId | int1 | int2 | int 3 | ...Is there anyway to duplicate this increase in database performancegained by splitting the table, perhaps by using a certain type ofindex?Thanks,Jeff BrubakerSoftware Developer
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Feb 4, 2006
I'm trying to move my current use of an sql 2000 db to sql 2005.
I need to update a table definition (to change a field to an Identity)
I'm getting a dialog box (in SQL server management studio) on save saying :
'xxxx' table
- Saving Definition Changes to tables with large amounts of data could
take a considerable amount of time. While changes are being
saved, table data will not be accessible.
I press 'Yes' to the dialog box.
After 35 seconds, I get another dialog box saying:
'xxxx' table
- Unable to modify table.
Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding.
Well, the server is responding and I can query that talbe and other, I
can add/delete rows to other columns. I can modify other
(smaller) tables.
Any ideas where I can change this timeout?
Daniel
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Nov 20, 2003
I was wondering what is the best solution to store large amounts of text in a SQL 2000 field. This text will be entered into a multiline textbox.
ex) what data type?......should I use BLOBs?
Thanks,
Trey
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Mar 20, 2007
this may seem like a simple question, but I have a report/lease agreement I need to put together and wanted to know the simpliest way to add large amounts of text. Basically its all the legal stuff most leases include in the amount of some 14 pages.
Should this be just one long string-- or does ssrs have another way to format this
thanks as always
KM
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Mar 3, 2006
I was wondering what is the fastest way to UPDATE lots of recods. I heard the fastest way to perform lots of inserts in to use SqlCeResultSet. Would this also be the fastest way to update already existing records? If so, is this the fastest way to do that:
1. Create a SqlCeCommand object.
2. Set the CommandText to select the datat I want to update
3. Call the command object's ExecuteResultSet method to create a SqlCeResultSet object
4. Call the result set object's Read method to advance to the next record
5. Use the result set object to update the values using the SqlCeResultSet.SetValue method and the Update method.
6. repeat steps 4 and 5
Also I was wondering do call the SqlCeResultSet.Update method once per row, or just once? Also would it be possible and faster to wrap all that in a transaction?
Would parameterized updates be faster?
Any help will be appreciated.
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Mar 6, 2008
I have been looking into mirroring a large amount of small databases approx 150 databases.
As I understand this won't be feasible because of the way mirroring threading works, http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=441900&SiteID=1
As I understand it for every database being mirrored sql will ping the mirror second, causing a network bottleneck?.
Also that the amount of threads generated for each mirrored database will cause also cause a bottleneck?
At the moment our database servers are under very little pressure and as an estimate use about 10% of the resources allocated to them such as CPU utilization, memory, disk IO and network. Our server hardware is Dual Quad core Xeons with 4 - 8 gig of memory and variety of 10k SCSCI raid configurations from raid 5 or 1,0 and sql 2005 32bit.
Ive done some calculations on the log file generation rate compared to network bandwidth there is more than enough network bandwidth.
Has anybody had any luck in mirroring many small databases?
My concerns is how much traffic is caused by the pinging of the mirror for each database?,
How many threads will the mirroring cause and what is the max amount of threads sql can handle?
How much memory will be consumed by each one of these mirroring threads?
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Sep 19, 2007
I know the standard Microsoft recommendation is to make the pagefile at least 1.5 to 3 times larger then the amount of physical memory. However, if you're talking about a server with lots of memory such as 16GB or 32GB, would following this rule be unnecessary. With SQL 2000 running on Windows 2000 Server or Windows Server 2003 I typically see pagefile usage no more then 12% for a 2GB pagefile. Anything over 15% means I need to look at other indicators to see if a memory bottleneck has developed. If I have 32GB of physical memory and make the pagefile only 1.5 x 32GB I have a 48GB pagefile. 10% of this is 4.8GB, which I would hope I never see consumed.
Any thoughts?
Thanks, Dave
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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
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Nov 24, 1999
Hi,
I need to insert a very large number of rows into a table (in SQL Server 7.0) using ADO.
Could you please tell me i there is a way for FAST insert, something similar to BCP ... or any other way of
inserting large number of rows efficiently
Thanks
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Jun 20, 2006
Hi!
The DB I am working with has about 10 tables and some of the tables have 200,000 to 500,000 records. All tables have a clustered index on the primary key.
I performance during INSERT could be better I think - I add thousands of records at a time from many connections.
Is there a way to defer the update of indicies? So that, I can update the tables and then let the indicies regenerate ?
thanks,
Jas.
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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
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Jul 7, 2004
I have a large text colum I am trying to insert into a DB
This colum is about 800 chars longs
I have set the colum type in the table to text
I have set the table option for text in row to on
I have set the table option for text in row to 1000
But it is still chopping the text at the 256 char mark on insert.
Anyone have any ideas ?? This is SQL 2000.
Chris
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Jun 14, 2004
I’m wondering if anyone can shed light on a problem I’ve noticed that's really made for a major thorn in my side. I recently had a Microsoft patch installed on my server, and now for some reason, trying to run INSERT or UPDATE queries against the SQL 2000 database are severely limited. I constantly get the error:
“Error: A severe error occurred on the current command. The results, if any, should be discarded.�
My Event Logs also return the following:
"Invalid buffer received from client."
I think I’ve isolated the problem to be that I can’t add new or modify existing records that try using a field which is of type TEXT, but now can’t be longer than 4,000 characters, else the error fires. This is really weird, as I’ve used the same ASP.NET script to call a stored procedure to INSERT/UPDATE records thousands of times before with 100% success.
I have a feeling this might have something to do with the patch, but has anyone come across this problem specifically, or know for sure which patch(es) cause it? Why all of a sudden would a TEXT field be so limited in capacity?
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Oct 4, 2015
I am studying indexes and keys. I have a table that has a fixed width of data to be loaded in the first column which is parsed in a view based on data types within the fixed width specifications.
Example column A:
(name phone house cost of house,zipcodecountystatecountry)
-a view will later split this large varchar string basedÂ
column b: is the source filename of the data load (varchar 256)
....
a. would there be a benefit of adding a clustered or nonclustered index (if so which/point in direction on why)
b. is there benefit of making one of these two columns a primary key (millions of records) or for adding a 3rd new column as a pk?
c. view: this parses the data in column a so it ends up looking more like "name phone house cost of house zipcode county state country" each having their own column.
-any pros/cons of adding indexes (if so which) to the view instead of the tables or both for once the data is parsed?
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Oct 10, 2007
I am trying to insert data into two different tables. I will insert into Table 2 based on an id I get from the Select Statement from Table1.
Insert Table1(Title,Description,Link,Whatever)Values(@title,@description,@link,@Whatever)Select WhateverID from Table1 Where Description = @DescriptionInsert into Table2(CategoryID,WhateverID)Values(@CategoryID,@WhateverID)
This statement is not working. What should I do? Should I use a stored procedure?? I am writing in C#. Can someone please help!!
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Nov 11, 2014
I have 2 tables in my database.
one is Race table and 2nd one is Age Range.
I want to write a query where I can see all races and age range as column.
TblRace
ID, RaceName
TblAgeRange
ID,AgeRange.
There is no connection between this two table. I need to display result like below.
Race 17-20 21-30 31-40
A
B
I
W
How do i get this kind of empty data set so that I can fill it out in front end or any better solution. The age range will be displayed as many row as they have. It's not static. Above is just an example.
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Sep 21, 2012
I have two tables. One is Invoice_tbl, with one account per customer.
This table has 3 fields; CustomerID, InvoiceAmount, InvoiceID.
Then second table is, Payment_tbl, with 2 fields; InvoiceID and PaymentAmount. The Payment table can have multiple payments from each customer.
With Access, i would run a QUERY(call it PaymentTotal) against Payment_tbl, then do a "GroupBy" on InvoiceID and SUM on the "Amount" field.
I then would create a NEW query against Invoice_tbl and INNER JOIN on Payment Total.
How would i do this with SQL?
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Dec 30, 2013
I have a view table A with 4 columns dateseq,SalesAmount, customerseq, CostofGoods and customerdescription.
Fact table B that has 4 columns dateseq,SalesAmount, Costofgoods, RebateAmount, and Customerseq.
My code is like this
select
ta.customerdesctiption,
sum(TA.salesamount) as salesamount,
sum(TB.RebateAmount) as salesamount
from
TableA TA
left join
tableB TB
on TA.dateseq = TB.dateseq
where
ta.dateseq like '%2013'
I would like to get
Customer A | 10,000
Customer B | 3,000
etc
What I get is:
Customer A | 20,000
Customer B | 6,000
etc
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Oct 4, 2006
hello guyshere is my problem:i am developing a asp.net web app in .net 2.0. i have some sensitive data in my database. which is encrypted using DES ( with some key which is only known by the top level authorities ). now there is an option of changing the secret key. on changing the key the sensitive data has to decrypted using the old key and then again encrypted using the new key. Now if the no of records increases i am afraid that it might take a longer time and the application might look as it got hanged. guys i have no clue on how to do this. if you guys have any idea on how to implement this please let me know. any help would be appreciatedVignesh
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Mar 20, 2008
Hi,
I'm currently trying to retrieve results from a large dataset, there are over 45000 records and I need to use them all to peform counts etc. I have set up views, but my page is still being returned slowly, is there anything I can do to speed this up?
Thanks
Gemma
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Mar 19, 2001
I was wondering if anyone can help me.
I am trying to import data into SQL Server 7. The table will be 700-800 columns, and the data will be about 150,000 records at a time.
The data source is flat file.
First I create the table using a database schema, and secondly I would like to populate the table.
The problem is that most of the data is numeric, and to be used for statistical analysis.
So far I have tried Bulk Insert, bcp, and dts.
DTS is the only method that has worked in any way, shape or form, but that requires importing each column as a Varchar. Importing to my pre-created table doesn't work, because it is interpreting some of the source columns as character data and refusing to insert them into an int field.
Bulk Insert and bcp both give error messages, and I am wondering if that is because of the size of the insert statement that is required to handle so many fields.
For the moment I am just trying to import the data in any way, but eventually, it will have to be run as an automated process, with the table structure probably needing to be altered as well.
Any help/suggestions would be very greatfully received.
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Feb 11, 2004
I have a web site that allows user to enter large strings into a database (comments, etc). What is the best way to do that? Right now I have them limited to 25 characters and the data type is varchar. Is there a better way?
Thanks!
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Dec 22, 2014
when to use table variable and temp table. i told the interviewer that when rows is less like hundreds or thousand then use table variable else use temp table.After that he asked that what do u mean by less data or thousand rows may be there are multiple columns involved with that less rows and make a huge data set.
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Jul 20, 2005
I want to build a system that will have about 1 million rows in atable in sql server database.I am using this for a web application andaccessing it via JDBC type 4 driver.But display 20 records at a timeonly using pagination(as in google).What will be the best way to goabout this.
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