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Hi,
I want to learn SQL Server and use it in C# Application.
Who know about it,please help me install it.
Thanks.
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Tran Ngoc Minh wrote:
Who know about it
Lots of people do.
Tran Ngoc Minh wrote:
please help me install it
What problems are you having while installing SQL Server?
My: Blog | Photos
"Man who stand on hill with mouth open will wait long time for roast duck to drop in." -- Confucious
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Hi,
I want to access sql store procedure.It has 3 input parameter and 8 output parameters. store procedure also retun the result set. Can you please give me reference of sample code to access store procedure. I am totally new to DB.
Thanks
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Hi
I've got a login Proc that returns some data upon successful login.
I've just added some checking code before this data to verify that the user may log in etc, but the resultsets from these checks are being returned in the dataset. Is there some way to clear the results before doing my final select statement?
Thanks
Russell
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Not too sure if this will help but when I have a structure like that I use a reader. I can then write the following:
if(r.Read()){
// they are valid, get user info
if(r.NextResultSet()){
while(r.Read()){
// return additional data for that person
}
}
}
r.close();
*->>Always working on my game, teach me
*->>something new.
cout << "dav1d\n";
-- modified at 12:45 Monday 3rd October, 2005
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I'm trying to get SQL to not return the recordsets that the SP uses internally and just return the data i really want.
There's quite a bit of branching in the checking code which means i don't know exactly how many select statements will be executed prior to the select that i want executed.
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The easiest way around this is to not execute queries that return rows.
Instead of:
SELECT *
FROM Users
WHERE ID = "Tom"
Do:
DELCARE @i INTEGER
SELECT @i = COUNT(*)
FROM Users
WHERE ID = "Tom"
You can use logic to determine if @i > 0 then process the rest of the login. You can use any number of variables in the SELECT. Just make sure your query only returns 1 row.
You can also use EXISTS:
IF EXISTS(SELECT * FROM Users WHERE ID = "Tom")
BEGIN
-- Do your work here
END
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Hey all, I've got data structured like this:
ID - Contact - Company - Email
1 - Jeff - Acme - Jeff@Acme.com
2 - Hester - Acme - Hester@Acme.com
3 - Mort - Acme - Mort@Acme.com
4 - Jason - Widget - Jason@Widget.com
5 - Harriet - Widget - Harriet@Widget.com
I need to write a query that will return only the first contact for each company, in this case it should return:
----------------------------------------
1 - Jeff - Acme - Jeff@Acme.com
4 - Jason - Widget - Jason@Widget.com
Thanks in advance!
*->>Always working on my game, teach me
*->>something new.
cout << "dav1d\n";
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Not Tested but give it a try.
<br />
SELECT ID, Contact, Company, Email<br />
FROM [table]<br />
GROUP BY Company<br />
HAVING MAX(ID) = ID<br />
Michael
I firmly believe that any man's finest hour, the greatest fulfillment of all that he holds dear, is that moment when he has worked his heart out in a good cause and lies exhausted on the field of battle - victorious.
Vince Lombardi (1913-1970)
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Just a little correction
SELECT ID, Contact, Company, Email
FROM [table]
GROUP BY Company
HAVING MIN(ID) = ID
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Nope
something like
select * from [table] t where id=(select min(id) from [table] tt where t.company=tt.company)
HTH
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Check this
SELECT *
FROM DeleteMe
GROUP BY Company
HAVING MIN(ID) = ID
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It will nerver work. Read BOL about GROUP BY first before posting.
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Why dont you try it first then reply. I have already tested it and it works fine.
I think you need some lesson on Group By.
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well the query by alam_pune looks fine to me as well..... its a nice and simple sql and works fine too.....
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select * from [table] where ID in
(select min(ID) from [table] group by company )
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I am having a Data Set which has multiple tables. I want the changes to be updated in the database(SqlServer 2000) which i perform in dataset.
I want to use only single DataAdapter for that. Please suggest me how to proceed regarding this.
Mansimranjit
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Hi !
My app is using SQLite as a database. I'd like to change the datatype of a column of several tables (for example changing from VARCHAR(10) to VARCHAR(50)) without loosing the existing datas.
How can I do this in SQL ? I didn't find anything ! Is it possible ?
Thanks for your help !
Jerome
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Just use the ALTER COLUMN syntax. If I had the following table:
CREATE TABLE DContact(
CONTACTID INT IDENTITY(1,1),
CONTACT VARCHAR(50),
COMPANY VARCHAR(50),
EMAIL VARCHAR(50)
)
I could change things like so:
ALTER TABLE DContact
ALTER COLUMN Email VARCHAR(100)
GO
This is TSQL that I wrote and tested, but it should be generic enough to work with your database.
*->>Always working on my game, teach me
*->>something new.
cout << "dav1d\n";
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when i use localhost in connection string dose not connect to the server i got SQL Server does not exist or access denied but when i use computer name it work the problem that programs use localhost dose not work how to resolve this
My Configrations
1-WinXP SP2 -Firewall OFF
2-SqlServer 2000 SP4
thanks for your help
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Use "(local)" instead of "localhost". Off the top of my head I cannot remember the reason why, but there is a difference.
My: Blog | Photos
"Man who stand on hill with mouth open will wait long time for roast duck to drop in." -- Confucious
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Thanks for your replay but this if you write the application or use computer name will work but what if you do not have access to the application source and can not configer connection string?
ie how to make localhost work ?
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Then how are you managing to configure it between using localhost and the computer name?
At a guess (as I've never come across this problem) you probably need to ensure that SQL Server is set up to use TCP/IP as a communications mechanism - and you need to ensure you have a network adapter for the communications to route through (even although it will just get looped back).
My: Blog | Photos
"Man who stand on hill with mouth open will wait long time for roast duck to drop in." -- Confucious
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When
Colin Angus Mackay wrote:
Then how are you managing to configure it between using localhost and the computer name?
when i wrote my application using local host it dose not work when i replace it with computer name it works
the problem the application that i do not write it it give me the error and i can not change the connection string and
SQL Server is set up to use TCP/IP as a communications mechanism
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How can I find out programatically all the ODBC Drivers avaliable on a system?
Hope I understand...because is a rough world out there...
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