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Fill factor is the initial percentage target for storing data on a page. It is used to prevent page splitting when a row with a new clustered index value is added that would fall between existing values - if the page has room, the value can be inserted without allocating a new page, and requiring data to move at most within the current page. If the page is full when this happens, a new page must be allocated, data moved to it to make room for the new row, then the new row inserted. Generally it is best to leave this at the default, unless you have clear evidence that frequent page splitting is a problem. Lower fill factors reduce the incedence of page splitting, but at the expense of potenially more wasted (allocated but unused) space. Fine tuning this can sometimes improve insert performance. it has no impact on read, update or delete performance (except that very low fill factors can hurt reads by forcing more seeks).
We need to graduate from the ridiculous notion that greed is some kind of elixir for capitalism - it's the downfall of capitalism. Self-interest, maybe, but self-interest run amok does not serve anyone. The core value of conscious capitalism is enlightened self-interest.
Patricia Aburdene
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I have written an update trigger. It is given below:
CREATE TRIGGER Trg_OnUpdateJSComman ON
[dbo].[JSComman]
FOR UPDATE
AS
begin
declare
@uid bigint
update JSCvs set LastUpdated=getdate()
where
(UID=@uid)
end
if any updates happen in the JSComman table this trigger will have to execute. but i need to pass the uid into the trigger for this to execute. is it possible to pass parameters into the trigger?
Thanks in advance.
Lavanya
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You shouldn't need to pass a parameter into a trigger. As a simplification, it has access to the INSERTED and DELETED tables, so you could write the above trigger as:
UPDATE JSCvs SET LastUpdated = GETDATE()<br />
WHERE UID = (SELECT UID FROM INSERTED)
Whenever you do an update, the tables INSERTED and DELETED store copies of the modification. Deleted stores the old version, and Inserted stores the updated version.
I hope that helps.
Arthur Dent - "That would explain it. All my life I've had this strange feeling that there's something big and sinister going on in the world."
Slartibartfast - "No. That's perfectly normal paranoia. Everybody in the universe gets that."
Deja View - the feeling that you've seen this post before.
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Thank you. I solved the problem. ![Rose | [Rose]](https://codeproject.global.ssl.fastly.net/script/Forums/Images/rose.gif)
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Hi,
I wanted to render the report to Landscape when i save the report in pdf.
When I set the height as 8in and width as 11in and save as pdf, every page is getting divided into 2 parts.
Can anyone help me in this regard.
Thanks,
Satish.
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I am building a program linked to an access database and i have managed to code in all the operation i need. For some reason, which is probably something im just overlooking, after i input some rows of data i can exit the program go to
C:\mydocuments\Visual Studio 2005\Projects\Project1\Project1\Bin\Debug\Resources\myDatabase
And look at the table and the data is there!! So i have created the data, inserted the data, accepted the changes, closed the program and i can go to the database and view the data in the table, BUT when i start the program over and go to the database again the data in the table is gone. Any Ideas??
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I dont know... maybe your program starts off with deleting the data?
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It sounds as though the database may be being dropped and recreated. Is this possible? To test this, rename the database and then run your program again. If it works OK, then your DB is being recreated every time.
Arthur Dent - "That would explain it. All my life I've had this strange feeling that there's something big and sinister going on in the world."
Slartibartfast - "No. That's perfectly normal paranoia. Everybody in the universe gets that."
Deja View - the feeling that you've seen this post before.
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Hey Pete,
I did what you said the when the program started it through and error and would not run because it wouldnt find the database so i guess thats not the problem. I was thinking mabye there is some sort of auto clear option im missing?
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Ok so i did a little further testing and The database file in the Resource folder is not being recreated and the program will not run without it. BUT!!!!!, the database file in the bin\debug\ folder is getting recreated. Also, when i go to check the data its never in the resource folder database its always in the debug folder database. So it needs the resource folder database to run, but it doest actually copy the data there!?!? Therefore the data is vanishing because the debug folder database is getting recreated everytime i run the program. So a few Questions to anyone? Why is the debug folder database recreating itself everytime i run the program? Why is the data not going to the resource folder database? Im thinking it might have something to do with the fact that im still in the build process? im using Microsoft Visual Basic 2005 Express Edition.
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You're right that it's because you are in the build process. Those helpful guys at MS developed things so that items that your projects depend on are automatically copied across whenever you run things, e.g. the App.Config file is copied and renamed to <appname>.exe.config automatically.
Arthur Dent - "That would explain it. All my life I've had this strange feeling that there's something big and sinister going on in the world."
Slartibartfast - "No. That's perfectly normal paranoia. Everybody in the universe gets that."
Deja View - the feeling that you've seen this post before.
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hi
i have a textbox & a button in my form.i have conneted the form to the database in the page load event. now when i insert a name in the textbox & click the button,i want that a table should be created dynamically by name which is entered in textbox1 in the specified database.(i m using vb.net 2002 and sql server 2000)
its urgent ..
thanks in advance..
pradip kishore
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Use a CREATE TABLE statement eg.
Dim sql As String = "CREATE TABLE " & txtTextBox.Text & "( Column1 INT )"
You'll have to specify at least one column though if you're creating a table dynamically.
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hi there,
i have this problem where i did a select with an aggregate:
----------------------------------------------------------------------
select distinct s.Sender_FName,s.Sender_LName, max(s.createdate) as recent_date,s.User_Flag
from tblSender s
group by s.Sender_FName,s.Sender_LName,s.User_Flag
order by s.Sender_LName,s.Sender_FName
-----------------------------------------------------------------------
what i want to is, to update the results of this query by setting the User_Flag value to 1. Is there some way of doing it like this, or any other way that this can be done without me having to use a loop?
Update (select .....)
set user_flag =1
Thanks,
FIFI
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Does this not work:
select distinct s.Sender_FName,s.Sender_LName, max(s.createdate) as recent_date, 1 AS User_Flag
from tblSender s
group by s.Sender_FName,s.Sender_LName
order by s.Sender_LName,s.Sender_FName
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Nice try, but this wouldn't work because it doesn't update the table. I need the tblSender Table to reflect this value too.
What i realise too is that i could use the result of the query and store it in a Temp table or something, and then use that to update the Sender table. BUT,...and this is a big BUT... i would need to extract the Sender_id field in the query too and then use that to match it back to the tblSender table, but when i include this field it messes up the result.
But all in all, if i can just get the result to be updated in the query that would be great.....
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I believe your UPDATE should look something like this:
UPDATE
tblSender
SET
User_Flag = 1
WHERE
createdate = (SELECT
MAX(s.createdate)
FROM
tblSender s
WHERE
s.Sender_FName = tblSender.Sender_FName AND
s.Sender_LName = tblSender.Sender_LName)
My 2 cents:
DISTINCT is a waste of syntax since you are using a GROUP BY Clause.
I see more and more examples on this board of tables without proper primary keys. Last/First names are lousy columns to use for an update (or a primary key).
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thanks alot, this seems to do the job. I'm gonna look it over and let u know
FIFI
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yeah man this works great. Thanks alot.
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Please can someone assist me with hooking-up an InfoPath Button event to a SQL Database. Button controls inserting of new data? Thanks for the rescue!
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Hello...Unfortunately infopath dosent provide inserting/Updating data from Infopath to SQl server.Only we can only retrive data from SQL Server - Infopath but not insert/update.
However we can do this by implementing webservice.
1.Create webservice that can interact with sql server(write functionality Update/Delete what ever you want)
2.Create connection to webservice in infopath(Tools>connectins)
3.Submit data to webservice from infopath.
How ever some of professional thirdparty tools available to interact with sql server,like QDABRA DBXL tool.
Regards
Kamalonline4@yahoo.com
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Hi everbody,
Iam currently working on datbase design.
Iam stucked at:If a primary key is assigned in database,I need to know all the foreign key relation of this PK on other tables in that database.
please help out on this,
thanks in advance,
Rupa
Rupa
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Primary keys and foreign keys are the backbone for how tables relate to each other.
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