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how to check for errors???
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At the start put:
DECLARE @currentError int After each insert put a
SELECT @currentError = @@ERROR;
IF @currentError <> 0
BEGIN
ROLLBACK TRANSACTION
RETURN
END
This would all be better in a stored procedure though.
Does this help?
ColinMackay.net
Scottish Developers are looking for speakers for user group sessions over the next few months. Do you want to know more?
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Super thank u!Best regards
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hello
plz help me i want to add some new rows in database file this file has only one column which is numeric. i am implementing it in c# how i will add and how i will update my table.
like if i want to enter random numbers in this field upto 500 means i have to create 500 new rows in my database file how i will implemet it.
plz reply as soon as possible
-- modified at 9:46 Friday 24th February, 2006
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hi look here is all answare of u question!))
ms-help://MS.VSCC.v80/MS.MSDN.v80/MS.VisualStudio.v80.en/dv_raddata/html/7dc75b15-4d55-47a2-afe4-4e5fb0640c3a.htm
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its not working plz tell me soonnnnnnnnnnn
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Look at this.by this code u can make 500 new rows
For exp your table name is t1 and it is located in a dataset dataSet1
dataRow newRow;
For(int i=0;i<500;i++)
{
newRow=dataSet1.t1.newRow();
newRow[num]=x;
dataSet1.t1.Rows.Add(newRow);
}
Num is the name of your field in your db and x is a number.
m.t.
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hi
How i can give data on this varable "@intA"
set @intA=select max(job_id) from maininfo is not work i need to take max values of this tabel how to do it???
good bye
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ok but now i have bigger problem why is not work???
CREATE PROCEDURE sp_addTel
--@JI varchar(30),
@MB bigint,
@TG smallint,
@MF smallint,
@var1 int output
as
set @var1=(select max(job_id) from maininfo)
insert into TeleInfo(job_id,mobil_db,tele_firm,mobil_firm)
values(@var1,@mb,@tg,@mf)
GO
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papa1980 wrote: but now i have bigger problem why is not work???
 What do you mean "not work"? That is such a vague statement.
ColinMackay.net
Scottish Developers are looking for speakers for user group sessions over the next few months. Do you want to know more?
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try this :
CREATE PROCEDURE sp_addTel
(
--@JI varchar(30),
@MB bigint,
@TG smallint,
@MF smallint,
@var1 int
)
as
select @var1= max(job_id) from maininfo
insert into TeleInfo(job_id,mobil_db,tele_firm,mobil_firm)
values(@var1,@mb,@tg,@mf)
GO
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Hi
I have two db;
Name table
main_info TelInfo
///Column Table
job_id //pk job_id
fn tel pk
sn mob
pr fmob
How i can do if i exchang data in main_info automaticly to be exchanget in TelInfo specilay primary key on main_info
good bye
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Hi Guys,
As of a few days ago I started to venture into the world of SQL. Subsequently I have a question on best practices relating to data population of a win form component.
For example, if you have a sql table which has a product column containing about 100 items. Now you want to pass these product items into a combo-box's drop down list ? What would be the best way of doing it ?
At the moment, I can set the data source property of the combo-box directly to this table containing the product items column. However, the product item's column changes data changes say couple of items per hour then what would be a good best pratice of keeping the combo box's drop down list updated ?
My idea would be to use data caching and apply a time expiry policy. Is my approach incorrect or too extreme for what I want to do. I would really appreciate if someone could give me guidance on this.
Thanks
Vee
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Hi Vee. I think your expectation of production traffic would drive this question. In many of my apps for low to moderate traffic, I just use a live query at run-time to retrieve the dropDownList items without any caching. But if you found that performance suffered this way for your site, I don't think it's extreme at all to use caching - you could use the Application cache for this, or if you're using ASP.NET 2.0 you could use the new SqlCacheDependency class. Here's a link to an example[^].
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thanks for the reply Mike. In your reply you stated that the expectation of the production traffic would drive this question. In response to that statement what are the test procedures you undertake to model traffic conditions on your database.
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Hi there. Well, if you are really concerned about it, you could acquire software tools to assist in testing your web sites at high loads. There are many commercially available (try Google for "web stress testing" and you'll find a bunch)
So how many hits a day/hour/minute do you expect you'll get?
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Which connection do you suggest I use to connect to a MySQL database? I need to be able to process literally 1000's of requests every minute. I also would like to know if MySQL runs ina query like fashion as Exchange does. That is it creates a log and processes reads and writes when it can. Does it lock the database during reads and writes?
Thanks for the help.
Example connection code is appriciated.
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How do I connect to the database called test on Localhost using C#? I can figure out the select statement code I think, but I am having no luck with me connection statements.
Thanks for the help!
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private void SetupDataBase()<br />
{<br />
SqlConnection cnSQL = new SqlConnection("server=localhost;database=tibia;uid=root;pwd=password");<br />
<br />
try<br />
{<br />
cnSQL.Open();<br />
SqlCommand cmd = new SqlCommand("SELECT name FROM characters", cnSQL);<br />
SqlDataReader reader = cmd.ExecuteReader();<br />
while(reader.Read())<br />
{<br />
txtPlayer.Text = txtPlayer.Text + "\n" + reader["name"];<br />
}<br />
}<br />
catch(SqlException ex)<br />
{<br />
txtPlayer.Text = ex.Message;<br />
}<br />
finally<br />
{<br />
cnSQL.Close();<br />
}<br />
}
Says it caa not find the SQL Server or access is denied.
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I get the following error when trying to install sql server 2005 standard:
-----------------------------------------------
SQL Server Setup failed to obtain system account information for the ASPNET account. To proceed, reinstall the .NET Framework, and then run SQL Server Setup again.
-----------------------------------------------
I'm running Windows XP pro.
I'm attempting to install all the sql components simmultaneously.
I've read on http://www.sqlteam.com/forums/topic.asp?TOPIC_ID=60606 that I need to change a setting in the Service tab of the websites properties dialog in the Internet Information Services manager, but that dialog doesn't have a "Service" tab!
Any thoughts?
Thanks!
Ian
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hello
plz help me!
i have only one column in my database file named rnd which contain random numbers i want to read these random numbers and store in a arraylist which method i use to read a specific rang of numbers likee 500 random numbers or whatever and i also want to insert some new random numbers in this access database file. i have used oledbreader object in while loop but how i will get each row value plz tell me soon
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