Database

Regaring Establishing Connection with sqlserver.

13-Sep-09 5:59

what are the data field sizes you are using to convert the field type you can use script as

GO
BEGIN
ALTER TABLE tbl ALTER COLUMN [fld] [varchar](18, 8) NOT NULL
END
GO

or create another field as varchar and update your data of numeric fld to it and then drop old column
you can also use casting

Best Of Regards,
SOFTDEV
If you have knowledge, let others light their candles at it

dayakar_dn12-Sep-09 8:35

dayakar_dn

12-Sep-09 8:35

Hi All,

I am getting a strange error while establishing connection with sqlserver.

i written the following code to establish the connection
string sqlStatement = "select * from Student_Table";
String dataBaseConnection = "Data Source=DREDDY9/SQLEXPRESS;Initial Catalog=SampleDataBase;Integrated Security=SSPI";
SqlConnection myConnection = new SqlConnection(dataBaseConnection);

SqlCommand myCommand = new SqlCommand(sqlStatement, myConnection);
SqlDataReader dr;

myConnection.Open();
dr = myCommand.ExecuteReader();
if(dr!=null)
{
Response.Write("Successfully Executed");
}
myConnection.Close();

To resolve this i tried with enabling local and remote connections and i enabled sql server browser.

but no use
any body is having any solution. please shere it.

Re: Regaring Establishing Connection with sqlserver.

dan!sh 12-Sep-09 8:56

Re: Regaring Establishing Connection with sqlserver.

12-Sep-09 8:56

What is the error?

It's not necessary to be so stupid, either, but people manage it. - Christian Graus, 2009 AD

εїзεїзεїз12-Sep-09 10:20

Re: Regaring Establishing Connection with sqlserver.

12-Sep-09 10:20

what kind of error you are facing are you enable to connect if so then try

Data Source=./SQLEXPRESS  instead off Data Source=DREDDY9/SQLEXPRESS

also check your protocols you are connecting with tcp/ip or named pipes and the user from which you are going to connect should have rights to connect to the db.

Best Of Regards,
SOFTDEV
If you have knowledge, let others light their candles at it

εїзεїзεїз12-Sep-09 12:00

Whats wrong with this query

12-Sep-09 12:00

look out for slash it should be \ not /

Data Source=DREDDY9/SQLEXPRESS;

Data Source=DREDDY9\SQLEXPRESS; D'Oh! | :doh:

Best Of Regards,
SOFTDEV
If you have knowledge, let others light their candles at it

AndreFratelli12-Sep-09 7:47

AndreFratelli

12-Sep-09 7:47

I have the following table (ccpoc)

poc_cod varchar(10)
poc_cod_asc varchar(10)
poc_desc varchar(40)

With the following data

poc_cod poc_cod_asc poc_desc
1           12         Coiso
1           13         Coisa
1           14         Coisinhas

And I'm trying the following query

UPDATE ccpoc SET poc_cod='133', poc_cod_asc='13', poc_desc='Coiso 133' WHERE poc_cod='13' AND poc_desc='Coiso 13' AND poc_cod_asc='1'

I'm querying the server with an ExecuteNonQuery in C#, and everything seems to go fine. No errors, no exceptions, everything runs well. The problem is that data in the table does not change!

Anybody has any idea what might be happening?

Best regards

Fratelli

dan!sh 12-Sep-09 7:58

12-Sep-09 7:58

I guess you should give a try to these:

1. Run SQL profiler to see what query is actually run on your table.
2. Run a select statement with same where clause to check if there are any rows matching the criteria.
3. If you are using transactions, check if you have committed it or not.
4. Does the same query when run through Management studio works?

It's not necessary to be so stupid, either, but people manage it. - Christian Graus, 2009 AD

Luc Pattyn12-Sep-09 8:14

Luc Pattyn

12-Sep-09 8:14

AndreFratelli wrote:
WHERE poc_cod='13' AND poc_desc='Coiso 13' AND poc_cod_asc='1'

none of the records shown match this.

Smile | :)

Luc Pattyn

Have a look at my entry for the lean-and-mean competition; please provide comments, feedback, discussion, and don’t forget to vote for it! Thank you.

Local announcement (Antwerp region): Lange Wapper? Neen!

AndreFratelli12-Sep-09 14:49

AndreFratelli

12-Sep-09 14:49

Yes, I noticed already. Lame mistake Sigh | :sigh:

Fratelli

εїзεїзεїз12-Sep-09 10:28

Auto reconnect to MySql when connection is lost after period of inactivity

12-Sep-09 10:28

With the following data

poc_cod poc_cod_asc poc_desc
1 12 Coiso
1 13 Coisa
1 14 Coisinhas

And I'm trying the following query

WHERE poc_cod='13' AND poc_desc='Coiso 13' AND poc_cod_asc='1'

in your abv given data their is no row having poc_desc='Coiso 13' , so how come will it update, no doubt the results would be zero.

Best Of Regards,
SOFTDEV
If you have knowledge, let others light their candles at it

Bil@l12-Sep-09 5:13

Bil@l

12-Sep-09 5:13

Hi,

I have a c# application that uses a MySql database, the problem that after a period of inactivity (8 hours) or when connection to the server where database is host is lost, the connection to the database is closed and database queries cannot be executed. how can i enable the auto reconnect to the database.

Best regards.

Keep it simple, stupid!

Re: Auto reconnect to MySql when connection is lost after period of inactivity

dan!sh 12-Sep-09 8:00

Re: Auto reconnect to MySql when connection is lost after period of inactivity

12-Sep-09 8:00

Through a Timer in your C# code. Unsure | :~

It's not necessary to be so stupid, either, but people manage it. - Christian Graus, 2009 AD

εїзεїзεїз12-Sep-09 10:40

Re: Auto reconnect to MySql when connection is lost after period of inactivity

12-Sep-09 10:40

Shouldnot disconnected architecture will resolve it D'Oh! | :doh:

Best Of Regards,
SOFTDEV
If you have knowledge, let others light their candles at it

dan!sh 12-Sep-09 19:07

Re: Auto reconnect to MySql when connection is lost after period of inactivity

12-Sep-09 19:07

I was also thinking why would you need an active connection "forever". Then thought there might be something in his application that desperately needs it and hence the reply.

It's not necessary to be so stupid, either, but people manage it. - Christian Graus, 2009 AD

εїзεїзεїз12-Sep-09 19:39

Re: Auto reconnect to MySql when connection is lost after period of inactivity

12-Sep-09 19:39

Best Of Regards,
SOFTDEV
If you have knowledge, let others light their candles at it

εїзεїзεїз12-Sep-09 10:37

Want to split variable in SQL[modified]

12-Sep-09 10:37

why are you making your connection always active means you dont need to connect to db always, you should connect to the db when you need to connect at the time of doing any CRUD operations,it will resolve your inactivity problem.

CCreate
R Retrieve
UUpdate
DDelete

Best Of Regards,
SOFTDEV
If you have knowledge, let others light their candles at it

xodeblack11-Sep-09 23:23

xodeblack

11-Sep-09 23:23

I have variable @keys which value is
Declare @keys varchar(max)
set @keys = '44,333,234,125,3,3445'

I want to split above variable in following from

the length of @keys can be 4000 character

Dre@m is not th@t wh@t u see in sleep.Dre@m is the thing which does not allow u to sleep

modified on Saturday, September 12, 2009 9:52 AM

εїзεїзεїз12-Sep-09 4:44

12-Sep-09 4:44

DECLARE @NextString NVARCHAR(40)
DECLARE @Pos INT
DECLARE @NextPos INT
DECLARE @String NVARCHAR(40)
DECLARE @Delimiter NVARCHAR(40)

SET @String ='softdev,sup'
SET @Delimiter = ','
SET @String = @String + @Delimiter
SET @Pos = charindex(@Delimiter,@String)

WHILE (@pos <> 0)
BEGIN
SET @NextString = substring(@String,1,@Pos - 1)
SELECT @NextString -- Show Results
SET @String = substring(@String,@pos+1,len(@String))
SET @pos = charindex(@Delimiter,@String)
END

Result
- Softdev
- sup

Best Of Regards,
SOFTDEV
If you have knowledge, let others light their candles at it

tagyurit12-Sep-09 5:18

tagyurit

12-Sep-09 5:18

do a string replace:

pseudocode:
string sLineFeed = "\n"; (or vbCrLf for Visual Basic or <br> for HTML)
string sSource = "A,B,C,D,E,F,G";

string sDestintion = replace(sSource,",",sLineFeed)

Rob
http://tagyurit.com

Abhishek Sur12-Sep-09 13:21

Abhishek Sur

12-Sep-09 13:21

Use this function :

CREATE FUNCTION [dbo].[FN_STRINGTOTABLE](@P_STRING VARCHAR(8000), @P_DELIMITER CHAR(1))        
	RETURNS @P_TEMPTABLE TABLE 
	(ITEMS VARCHAR(8000))        
AS        
BEGIN        
    DECLARE @V_IDX INT        
    DECLARE @V_SLICE VARCHAR(8000)        
       
    SELECT @V_IDX = 1        
        IF LEN(@P_STRING)<1 OR @P_STRING IS NULL  RETURN        
       
    WHILE @V_IDX != 0        
    BEGIN        
        SET @V_IDX = CHARINDEX(@P_DELIMITER,@P_STRING)        
        IF @V_IDX	!=0        
            SET @V_SLICE = LEFT(@P_STRING,@V_IDX - 1)        
        ELSE        
            SET @V_SLICE = @P_STRING        
           
        IF(LEN(@V_SLICE)>0)   
            INSERT INTO @P_TEMPTABLE(ITEMS) VALUES(@V_SLICE)        
  
        SET @P_STRING = RIGHT(@P_STRING,LEN(@P_STRING) - @V_IDX)        
        IF LEN(@P_STRING) = 0 BREAK        
    END    
RETURN        
END

This will work great. Rose | [Rose]

Abhishek Sur

My Latest Articles
Create CLR objects in SQL Server 2005
C# Uncommon Keywords
Read/Write Excel using OleDB
Don't forget to click "Good Answer" if you like to.