Re: I can't execute an ms access query in Ado .net ? :( - Database Discussion Boards

Re: Sql query

Colin Angus Mackay10-Jun-07 1:43

Colin Angus Mackay

10-Jun-07 1:43

Parameswar Mal wrote:
Please write a query for this ???

Please specify the route between the input and output. It is not obvious.

A seems to add the marks
C substracts one from the other. What are the rules for this? Given that a SQL works on SET based operations with no intrinsic order how do you work out which number should be subtracted from the other.
I don't know what B does as there is only one of them.

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Re: Sql query

Arun.Immanuel10-Jun-07 15:28

Arun.Immanuel

10-Jun-07 15:28

Are you trying to find the average or sum?
If C's mark is wrong, then
select A,sum(mark) from tblName group by name order by name

If A's mark is wrong, then
select A,avg(mark) from tblName group by name order by name

Regards,
Arun Kumar.A

Check other open connections

Joe Smith IX9-Jun-07 23:57

Joe Smith IX

9-Jun-07 23:57

Hi there,

In SQL Server, is there anyway to check other open connections (who else currently connected to the database)?

Thanks.

Re: Check other open connections

Mike Dimmick10-Jun-07 0:12

Mike Dimmick

10-Jun-07 0:12

sp_who reports all current connections.

The procedure takes its data from the sysprocesses view (SQL Server 2000) or the sys.dm_exec_connections dynamic management view in SQL Server 2005.

Stability. What an interesting concept. -- Chris Maunder

Documentation tool for SQl SERVER DATABASE

xbiplav9-Jun-07 17:57

xbiplav

9-Jun-07 17:57

I want to document sql server express database.
Is there any free tool available to document sql server express database?

Could you people provide me link or something?

X

I can't execute an ms access query in Ado .net ? :(

Hamed Musavi9-Jun-07 4:01

Hamed Musavi

9-Jun-07 4:01

Here's what I do:

strProcName = name of the query in access that works fine in access itself.

using (OdbcConnection cnn = new OdbcConnection("Dsn=LclPMedicHist;"))
{
    using (OdbcCommand cmd = new OdbcCommand (strProcName, cnn))
    {
        cmd.CommandType = CommandType.StoredProcedure;
        OdbcParameter prm;

        prm = new OdbcParameter("szName", OdbcType.NText, 50);
        prm.Value = Name;
        cmd.Parameters.Add(prm);

        ....

        cnn.Open();
        cmd.ExecuteNonQuery();
    }
}

ExecuteNonQuery() throws an exception:

An unhandled exception of type 'System.Data.Odbc.OdbcException' occurred in System.Data.dll

Additional information: ERROR [42000] [Microsoft][ODBC Microsoft Access Driver] Invalid SQL 
statement; expected 'DELETE', 'INSERT', 'PROCEDURE', 'SELECT', or 'UPDATE'.

I've even tried to use "?" as parameters names, or put "PROCEDURE " directly before query name. It didn't work. Can any one help me please? I'm really a newbie in C# and .Net.

Re: I can't execute an ms access query in Ado .net ? :(

Paul Conrad9-Jun-07 5:57

Paul Conrad

9-Jun-07 5:57

Hamed Mosavi wrote:
cmd.CommandType = CommandType.StoredProcedure;

have you tried using CommandType.Text? Access only has queries, no stored procs (unless it is an Access Database App that ties in with SQL Server).

"The clue train passed his station without stopping." - John Simmons / outlaw programmer

Re: I can't execute an ms access query in Ado .net ? :(

Hamed Musavi10-Jun-07 0:20

Hamed Musavi

10-Jun-07 0:20

Paul Conrad wrote:
have you tried using CommandType.Text?

Yes. No difference. I don't know. perhaps Ado .Net does not support it Confused | :confused:

I transfered queries into my C# code Frown | :(

I'm still wondering what exactly others use in place of mdb files, when the customer can not afford SQL Server or even does not need that at all(Small databases that has not many users).

// "Life is very short and is very fragile also." Yanni
while (I'm_alive)
{
cout<<"I love programming.";
}

SQL query

webhay9-Jun-07 0:35

webhay

9-Jun-07 0:35

I have two customer and order table how can i return all customer has no orders.
Thank you
hoho

Re: SQL query

P_pk9-Jun-07 1:38

P_pk

9-Jun-07 1:38

i didn't get the clear picture.give the condition by using 'where'

PPK

Re: SQL query

Krish - KP9-Jun-07 2:14

Krish - KP

9-Jun-07 2:14

your question is not clear. can you please provide table structure and sample data. which will help us in solving your query.

Regards
KP

Re: SQL query

webhay9-Jun-07 2:27

webhay

9-Jun-07 2:27

Thank you for you reply.

I have customer table and Customer order and there is a PK in the customer table and FK in the order table i need to get all coustomer has no record in the order tables

Thank you

Re: SQL query

Krish - KP9-Jun-07 3:32

Krish - KP

9-Jun-07 3:32

this can be done using two methods
1. outer join
2. not exists
you can choose one on these two.

Regards
KP

Local databse

maksim3108-Jun-07 16:38

maksim310

8-Jun-07 16:38

Hi,

I am writing a program in VB.NET (VS2005 Pro) that essentially simulates an neurology experiment. This program's data shoould consiste of 8 independent tables, each having 13 columns and up to 100,000 rows in each table. To make it simpler, all data will be in string format.
Other requirments:
1. The tables needs to be sortable like a dictioanry where 1 column will act as a key.
2. The user needs to be able to see the data in a tabular format.
3. The data must be held on the user's local machine, not a server and not remotley.
4. Needs to easily be readable by Excel, doesn't matter how. It can convert to an XML file and then somehow be automatically converted to xls.

I am thinking of using a databse becasue I would like to eventually create a login screen to link previous experiment values to a user, but that is not essential. I used dynamic multi-dimensiaonal arrays but find it difficult to work with, and extremley difficult to sort.

I was looking at the idea of using an XML database which will probbaly solve any issues of excel compatability as well as provide support for displaying the information on a website sometime in the future. I can't figure out how this all works.

Can anyone recommend a way to display a large amounts of generated data on a local computer, and almo make it save-able. I also like Oracle's 10g Express thing, but don't know if it would work for my specific problem becasue the cusotmer support people at Oracle don't speak English very well.

Thank You,

Maksim
UCLA, Neurology

Re: Local databse

Sathesh Sakthivel8-Jun-07 16:44

Sathesh Sakthivel

8-Jun-07 16:44

My Best Suggestion is go with XMl.

Regards,

Satips. Rose | [Rose]

Re: Local databse

Expert Coming8-Jun-07 22:29

Expert Coming

8-Jun-07 22:29

I think performance wise a database would be alot faster. You can sort by column in multiple ways as well as only pull the data you want by using queries. Even if speed isn't a factor, I think you'll find working with databases easier.

The best way to accelerate a Macintosh is at 9.8m/sec² - Marcus Dolengo

Re: Local databse

maksim3109-Jun-07 9:37

maksim310

9-Jun-07 9:37

How would it work with ym clients, do they need to install a database software? I want something that is embedded into my aplication that won't require the user to do anything more than install the application.

Connect to server

emiralp8-Jun-07 10:36

emiralp

8-Jun-07 10:36

Hi ,

As you all know, in sql server, the program must be connected to a server to work properly(execute db, etc.). How can I make my pc work like a server, then connect to it in sql server 2005.

thanks !

Re: Connect to server

Expert Coming8-Jun-07 22:37

Expert Coming

8-Jun-07 22:37

I don't understand the question. Do you mean how do you make you computer a SQL Server? Simple. Install SQL Server.

The best way to accelerate a Macintosh is at 9.8m/sec² - Marcus Dolengo

Re: Connect to server [modified]

emiralp8-Jun-07 23:04

emiralp

8-Jun-07 23:04

The problem is, I write my computer name at the start of the sql server manager studio(to the server name) but doesn't connect, it tries and then it throws an error message.

the message is ;
An error has occured while establishing a connection to the server.
When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections.(provider: Named Pipes Provider,error:40-Could not open a connection to SQL Server)(Microsoft SQL Server,Error :53)

what must I do ?

-- modified at 5:49 Saturday 9th June, 2007

Re: Connect to server

Paul Conrad9-Jun-07 11:03

Paul Conrad

9-Jun-07 11:03

You need to go into the configuration manager and tweak the settings to allow remote connections.

"The clue train passed his station without stopping." - John Simmons / outlaw programmer

CRecordset for multi-table recordsets

paulosuckow8-Jun-07 8:28

paulosuckow

8-Jun-07 8:28

I need help with accessing a table in a mutlitable recordset. I have :

3 tables as follows

CString COrderSet::GetDefaultSQL()
{
return _T("[tbladdress],[tblcontact],[tbltest]");
}
and I am trying to add new record to each table individually.

My "m_pSet" that is a joint recordset of these three. How can I get a handle or pointer to each table.

When I do : m_pSet->AddNew() I get a "recordset read-only" error msg. which make sense because it doesn't know where to add a new record. (note that m_pSet is a joint set.)

Please help.

paulo.

top rows

vasini8-Jun-07 7:30

vasini

8-Jun-07 7:30

Hi,
I need to generate a report for top 10 share holders. its not that the first top 10 values. Its the top 10 share holders ( values). I am writing the query in sql server. Please help me to get top 10 share holder values.

Thank you.

Vasini

Vasini

Re: top rows

Colin Angus Mackay8-Jun-07 9:13

Colin Angus Mackay

8-Jun-07 9:13

SELECT TOP 10 *<br />
FROM Shareholders<br />
ORDER BY whatEverColumnMakesThemTop

Re: top rows

Harini N K10-Jun-07 19:33

Harini N K

10-Jun-07 19:33

Colin Angus Mackay wrote:
SELECT TOP 10 *
FROM Shareholders
ORDER BY whatEverColumnMakesThemTop

Put Descending in the Order by clause to get max. top 10 shareholders. Smile | :)

Harini

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