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Soumya Mathew wrote: How can we get the newly inserted row's size from a SQL Server table?
I really have no clue what you mean by "Row Size"...
Are you trying to say you want the sum of individual field sizes?
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Don't you mean the row count ???
<br />
select count(*) from tablename<br />
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hi all,
i have developed an application in vb.net using Ms-Sql as back end.
the application is a multiuser on net/Lan.
But i have no idea if more than one user fire same querry at the same time.
is this hang the system/application.
if so solution please
thankx in advance.
-- modified at 4:43 Thursday 29th November, 2007
rmshah
Developer
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r_mohd wrote: But i have no idea if more than one user fire same querry at the same time.
is this hang the system or crash the application.
SQL Server is designed as a scalable back-end database for multi-user applications. As long as you write your data access code and queries in an efficient manner, you should have no problems.
r_mohd wrote: pl remdy also
What does this mean? Please try and use English - textspeak is really annoying.
BTW, you claim to be a Senior Developer but you don't have basic knowledge of data access? I find this very worrying .
Paul Marfleet
"No, his mind is not for rent
To any God or government"
Tom Sawyer - Rush
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pmarfleet wrote: BTW, you claim to be a Senior Developer but you don't have basic knowledge of data access? I find this very worrying
The "Senior" is probably not an adjective for the "Developer"
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He's now modified his post and changed his job title to 'Developer'. I wonder whether he got demoted after I posted my comments?
Paul Marfleet
"No, his mind is not for rent
To any God or government"
Tom Sawyer - Rush
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pmarfleet wrote: He's now modified his post and changed his job title to 'Developer'. I wonder whether he got demoted after I posted my comments?
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Hi all,
I need to be able to read in a CSV and then write all data back to a specified table within Oracle.
At the moment, I have put the following Oracle connection together, but need to read in c:\test.csv for example.
OracleConnection importOraConn = new OracleConnection();
importOraConn.ConnectionString = "User Id=USERNAME,Password=PASSWORD;Data Source=ORACLEDB";
importOraConn.Open();
OracleCommand importOraCommand = importOraConn.CreateCommand();
OracleDataAdapter oda = new OracleDataAdapter(importOraCommand);
Any help with this would be greatly appreciated.
Thanks
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Oracle should have an import wizard you can use and load the data into a temp table then sort it from there.
If you must use code then you need to:
1) open the file as text via code.
2) Get each row from the text file
3) Copy row into an array as the ; being the delimiter of the array
4) transfer the array into an object or fields and sanitise it.
or boadge a sql insert string using the array values.
5) insert this into oracle using as a sql command.
There are a few ways of doing what you want and this is just a suggestion.
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Thanks, that's made things a little clearer of how to do things.
Do you have a snippet of how I get from step one to using insert statements?
Thanks
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public DataSet Get_Friends_Birthday(DateTime d)
{
User=0;
DataSet ds = new DataSet();
SqlConnection con = new SqlConnection(@"Data Source=.\SQLEXPRESS;AttachDbFilename=" + '"' + @"C:\Users\LadyLara\Documents\Visual Studio 2008\Projects\Private Notebook WebService\Private Notebook WebService\App_Data\Private Notebook Database.mdf" + '"' + ";Integrated Security=True;User Instance=True");
string scom = "SELECT FriendID, FFirstName, FLastName, FBirthday, FE_mail1, FE_mail2, FE_mail3, FE_mail4, FPhone_Number1, FPhone_Number2, FPhone_Number3, FPhone_Number4, UserID FROM Friends WHERE (UserID = "+"@IDUS)"+" AND (FBirthday = "+"@Date)";
SqlCommand sqlcom = new SqlCommand(scom,con);
sqlcom.Parameters.Add("IDUS", SqlDbType.Int).Value=User.ToString();
sqlcom.Parameters.Add("DATE", SqlDbType.SmallDateTime).Value=d.ToString();
SqlDataAdapter adapt = new SqlDataAdapter(scom, con);
con.Open();
adapt.Fill(ds);
return ds;
}
when it reaches adapt.fill(ds) i get the folowing error. "System.Data.SqlClient.SqlException: Must declare the scalar variable "@IDUS"."
Please Help!
rzvme
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rzvme wrote: sqlcom.Parameters.Add("IDUS", SqlDbType.Int).Value=User.ToString();
sqlcom.Parameters.Add("DATE", SqlDbType.SmallDateTime).Value=d.ToString();
Prefix your parameter names with @ symbols.
BTW, you should consider not using inline SQL statements. Use stored procedures instead.
Paul Marfleet
"No, his mind is not for rent
To any God or government"
Tom Sawyer - Rush
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i thought about using stored procedures only i don't know exactly how to do this.(oracle fan) and by the way....even with the @ symbol in front of the parametername i still get the exact same error.
rzvme
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string scom = "SELECT FriendID, FFirstName, FLastName, FBirthday, FE_mail1, FE_mail2, FE_mail3, FE_mail4, FPhone_Number1, FPhone_Number2, FPhone_Number3, FPhone_Number4, UserID FROM Friends WHERE (UserID = "+"@IDUS)"+" AND (FBirthday = "+"@Date)";
You don't need to do any string concaternation here.
You should still really consider using stored procedures instead - you wouldn't have these problems if you did.
Paul Marfleet
"No, his mind is not for rent
To any God or government"
Tom Sawyer - Rush
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ALTER PROCEDURE [dbo].[uspGetBirthdayFriends]
@CRK INT
@BDATE SMALLDATETIME
AS
begin
select * from Friends where UserID=@CRK and FBirthday =@BDATE
RETURN
end
same error
incorrect sintax near '@BDATE'
must declare scalar variable "@crk"
rzvme
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You have made a syntax error. Each parameter declaration should be separated by a comma.
Paul Marfleet
"No, his mind is not for rent
To any God or government"
Tom Sawyer - Rush
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Thank you. That worked. But now i get another error and i can't seem to determine the cause
after i invoke
adapt.Fill(ds);
/*This is the code of the procedure*/
ALTER PROCEDURE dbo.uspGetBirthdayFriends
@CRK INT,
@BDATE SMALLDATETIME
AS
begin
declare @ID int
declare @BDATE smalldatetime
select * from Friends where UserID=@ID and FBirthday =@BDATE
end
RETURN
i get the following error "Procedure uspGetBirthdayFriends has no parameters and arguments were supplied."
Thank you
rzvme
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You've declared @BDATE twice in your SP - once as a parameter and secondly as a variable. This code won't complile - remove your variable declaration.
Paul Marfleet
"No, his mind is not for rent
To any God or government"
Tom Sawyer - Rush
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You should really pass @ID in. Change it to:
dbo.uspGetBirthdayFriends
@ID INT,
@BDATE SMALLDATETIME
AS
begin
select * from Friends where UserID=@ID and FBirthday =@BDATE
end
RETURN From what I saw of your earlier post, you also seem to have a problem with the way you are handling your parameter. When you add in the SqlParameter, you need to put the parameter in with an @ in front of the name, e.g. command.Parameters.Add(new SqlParameter("@ID", SqlDbType.Int));
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Thank you very much. Both of you. I finaly solved the problem.
rzvme
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pmarfleet wrote: You don't need to do any string concaternation here.
Yes, that is dangerous.
"Real programmers just throw a bunch of 1s and 0s at the computer to see what sticks" - Pete O'Hanlon
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I wrote the following code. application runs , no error but it does not display any data. What will be the problem with it? some one please help me.although code i tokk is from book, but still there is problem...
using System;
using System.Data.SqlClient;
namespace ConsoleApplication2
{
public class ExecuteReadExample
{
public static void Main(string[] args)
{
// string source = "server = \\10.8.7.67" + "integrated security=SSPI;" + "database=Northwind";
//string select = " SELECT ContactName, CompanyName FROM Customers";
"Provider=Microsoft.Jet.OLEDB.4.0; Data Source=c:\App1\Your_Database_Name.mdb; User Id=admin; Password="
SqlConnection conn = new SqlConnection(source);
conn.Open();
SqlCommand cmd = new SqlCommand(select, conn);
SqlDataReader reader = cmd.ExecuteReader();
while(reader.Read())
{
Console.WriteLine("Contact : {0,-20} company : {1}" , reader[0] , reader[1]);
}
}
}
}
Safdar Khan
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Check your query. Does it return any data if you run it through Access?
Paul Marfleet
"No, his mind is not for rent
To any God or government"
Tom Sawyer - Rush
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Thanks a lot. OK,I do that but still it didn't work.
Safdar Khan
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Look at Mike's reply[^]. What he says is correct. You are using the SQL Server classes when you should be using the OleDb classes.
Paul Marfleet
"No, his mind is not for rent
To any God or government"
Tom Sawyer - Rush
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