Given the following code:
System.Data.SqlClient.SqlCommand sc = new System.Data.SqlClient.SqlCommand();
sc.CommandText = "MySP";
sc.CommandType = System.Data.CommandType.StoredProcedure;
sc.Connection = new System.Data.SqlClient.SqlConnection("MyConnectionString");
sc.Connection.Open();
sc.ExecuteNonQuery();
sc.Connection.Close();
sc.Connection.Dispose();
sc.Dispose();
Is the call to sc.Connection.Dispose() necessary?
J
Hi, there;
If I create a SqlCeDataAdapter object like this:
SqlCeDataAdapter adapter = new SqlCeDataAdapter(Utility.StrSelectStatement,conn);
where: Utility.StrSelectStatement is a static string;
conn is SqlCeConnection object.
Now I want to dispose this adapter object:
adapter.Dispose()
Can this "adapter" be disposed properly here? I ask this because I use that static string to create that adapter.
Cheers
I have an Execute SQL Task that returns a dataset to variable DfltValData. A dataflow follows that with a script component that access that dataset (read only variable) (see code below) and everything is fine. Now, after that, there's another dataflow with a script component, with the same code as below, trying to access DfltValData. Here is where the problem is, the DfltValData object does not contains any row. Whats happening and how to solve this?
Thanks!
Dim olead As New Data.OleDb.OleDbDataAdapter
Dim dt As New Data.DataTable
Dim row As System.Data.DataRow
olead.Fill(dt, Me.Variables.DfltValData)
For Each row In dt.Rows
.
.
.// read value from row.
i am using visual web developer 2005 and SQL Express 2005 with VB as the code behindi am using the following code to update the database table Dim update As New SqlDataSource() update.ConnectionString = ConfigurationManager.ConnectionStrings("DatabaseConnectionString").ToString() update.UpdateCommandType = SqlDataSourceCommandType.Text update.UpdateCommand = "UPDATE orderdetail SET fromdesignstatus = 2 ,progresspercentage = 15 , fromdesignlink = '" + designlink + "' WHERE order_id =" + ordersid.ToString() update.Update() update.Dispose() update = Nothing i am using update.Dispose() and update = nothing to release the memoryis it really necessary to use both the commandsif not , in my case which one is enough and what is the reasonplease help me
View 3 Replies View RelatedI've got an application uses a WPF GUI, is built in VS2008 final, targets .Net Framework 3.5, and uses a Sql Ce 3.5 database for local storage. After a specific WPF window is rebound the application hangs. Hitting pause on the debugger reveals the offending method is a call to SqlCeConnection.Dispose(). Via Reflector I can see this method calls SqlCeConnection+ObjectLifeTimeTracker.Close() which in turn calls GC.WaitForPendingFinalizers(). Within WPF there are some objects (specifically TextBox) which need to have their resources freed on the main application thread. The finalizer thread is waiting on the main application thread, which is in turn waiting on the finalizer thread, resulting in a deadlock.
You can see some additional discussion of the topic including our temporary resolution in this thread.
My question is why is there a call to GC.WaitForPendingFinalizers() buried within the SqlCeConnection.Dispose() call tree?
After making several hundred queries against a SQL CE 2.0 database (through NetCF/ADO.NET), I begin getting a SqlCeException: "Not enough storage is available to complete this operation."
Microsoft speaks to this situation in the following hotfix:
http://support.microsoft.com/?kbid=827837
When I contacted them to receive the hotfixed ssce20.dll, they described the problem as SqlCeDataReader and SqlCeDataAdapter not releasing their memory resources after they went out of scope. In addition to using the hotfixed binary, they also advised me to call SqlCeEngine.Dispose() after every query to force SQL CE to release resources, as shown in the "finally" block of the code below.
I have a couple of questions about this:
(1)
Will this cause a lot of performance overhead for me, especially if my application makes frequent queries using the following code?
(2)
Can a cache an instance of SqlCeEngine and call Dispose() on that cached instance repeatedly, so I can avoid having to instantiate a new SqlCeEngine each time?
SqlCeConnection conn = null;
try
{
conn = new SqlCeConnection(connectionString);
dbCmd.Connection = conn;
dbCmd.Connection.Open();
dbCmd.ExecuteReader(CommandBehavior.CloseConnection);
<use the reader>
}
finally
{
dbCmd.Connection.Close();
// Add the following code to release resources?
SqlCeEngine engine = new SqlCeEngine(connectionString);
engine.Dispose();
}
Hi,
I'm having the problem that my application hangs on SqlCeConnection.Dispose() when I'm closing the app.
public class DatabaseManager : IDisposable
{
private DbConnection connection = null;
// Singleton
private DatabaseManager()
{
this.CreateConnection();
}
~DatabaseManager()
{
this.Dispose();
}
public void Dispose()
{
if (this.connection != null)
{
this.connection.Dispose();
}
}
// ...
}
This only happens when I'm calling Application.Exit(); and Dispose is called through the destructor of the DatabaseManager class. When I'm disposing the connection during normal work the call works as intended. BTW I'm using SQL Server Mobile 3.0.5214.0 on a PPC 2003 AKU2 (Symbol PPT8846 industrial device).
Thanks for support,
Klaus
found it
View 3 Replies View RelatedHey,
I have MS SQL database.
I have procedure:
code:--------------------------------------------------------------------------------
CREATE PROCEDURE dbo.Reg_DropTable
@ModuleId varchar(10)
AS
declare @TableName varchar, @kiek numeric
set @TableName = 'reg_'+@ModuleId
begin
DROP TABLE @TableName <- HERE I GOT ERROR
end
GO
--------------------------------------------------------------------------------
I got error when using variable with tables names.
How to do this?
Ps. Number is send to this function and it must drop table with name Reg_[That number]
I am receiving funny results from a query. To simplify, I have 2 tables (todayyesterday). Each tbl has the same 8 columns. My query joins the two tables then looks where either of two columns has changed. What is happening is that when checking one of the columns it seems as though sql is flipping the column, causing it to be returned in error.
result set
colA colB colC colD colE colF colG colG (from yesterday)
1 1 a b c d e m
1 1 a b c d m e
So what's happening is that the record above is actually the same record and should not be returned. There is a daily pmt column that changes but I am not using that in the query. Aside from that the two records are identicle.
Any help is appreciated.
Hi,
I have the following situation (with a site that already works and i cannot modify the database architecture and following CrossRef tables -- you will see what i mean by CrossRef tables below)
I have:
Master table Hotel
table AddressCrossRef (with: RefID = Hotel.ID, RefType = 'Hotel', AddrID)
joins
table Address (key = AddrID)
table MediaCrossRef (with RefID = Hotel.ID, RefType= 'Hotel', MediaID)
joins
table Media (with MediaID,mediaType = 'thumbnail')
foreach hotel, there definitely is a crossRef entry in AddressCrossRef and Address tables respectively (since every hotel has an address)
however not all hotels have thumbnail image
hence i have hotel inner join AddressXReff inner join Address ..... however i must have
left outer join mediaXref left outer join media
the problem is that if there is no entry in Media or mediaXref, I don't get any results
i tried to get over it by using
where (media.mediaTyple like 'thumbnail' or media.mediaType is null)
but then i started getting multiple results for each hotel because media's of type movie or full_image or etc... all got returned
any clue?
thanks
...when I started this endeavor.
I have a previously developed Lotus Notes App. The idea was simple; as
I am sefl taught on Lotus Script, I figured I'd be able to stumble my
way through VB.Well,
it started OK. I used VB Express to get familiar with the stuff, but
decided to go with a full version of VS 2005 and try and get this thing
properly developed as a web app. I purchased several reference books
etc., and have become relatively familiar with the forums here.First
issue I have is that I simply want to use code to update or add records
to an SQL DB. I know about datagridview etc., but I want to update the
DB using forms, not the tabular view those controls provide. I thought
it would be relatively straight forward, but found my ignorance runs
deeper than I thought. When I tried to do so I am finding I am not
really clear on where to make declarations etc. in the web app. If anyone could point me in the right direction that would be great. The
issue with searching these forums is most posts deal with datagridview
or something similar.I have spent a ton of time trying to find relevant
posts or articles, but have had no luck yet.Again, all Ireally
need is a nudge in the right direction. I am more than willing to plod
through reference materials or articles/posts to find what I need to
know, I just can't find where to even start on the info I need. Regards, Joe
Hi
I have a problem with my sql WHERE query, if i manually type ([Area] = 'The First Area') then it is okay but if i try and pass the variable 'The First Area' using the
([Area] = @Area) it doesnt work.
ALTER PROCEDURE dbo.StoredProcedure1(@oby nvarchar,@Area char,@Startrow INT,@Maxrow INT, @Minp INT,@Maxp INT,@Bed INT)ASSELECT * FROM(SELECT row_number() OVER (ORDER BY @oby DESC) AS rownum,Ref,Price,Area,Town,BedFROM [Houses] WHERE ([Price] >= @Minp) AND ([Price] <= @Maxp) AND ([Bed] >= @Bed) AND ([Area] = @Area)) AS AWHERE A.rownum BETWEEN (@Startrow) AND (@Startrow + @Maxrow) Please Help I know it must be something simple as the sql works but not when i pass the variable.... Thanks In Advance
How can i get an output like this from this sql??
HEM_PATIENT_ID is primary key...
Output:
First row: initial values of the fields
Second row: average of the same fields
Please help me...
select * from (
select HEM_LOKOSIT, HEM_NNS
from LPMS.HEMOGRAMS
where HEM_PATIENT_ID = 33
union
select AVG(HEM_LOKOSIT), AVG(HEM_NNS)
from LPMS.HEMOGRAMS
where HEM_PATIENT_ID = 33)
order by HEM_LOKOSIT desc nulls last;
Am new to SQL Server , can any1 tell me is there anyway to display date in this format month and year like Apr 2000 ,excluding the day.
eg: 01/28/2000 should b displayed like Jan 2000
Hi,
I'm relatively new to SQL7 but I did use 6.5 a fair bit.
I'm trying to test the restore of the Transaction log backup and having a bit of difficulty. The idea is that I make a complete database backup at 1am backup the transaction log every 30 minutes between 7am and 7pm. I need to be able to restore the database to a known state between 7am and 7pm with a max data loss of 30 minutes.
What I am trying to achieve is (as a test):
1)Create a small test database with a test table
2)Add some data to the test table
3)Back up the transaction log
4)Restore the transaction log to 'undo' the data added in step 2
Should be simple I think !!! The problem I am encountering is that in step 4 it won't let me restore only the transaction log (a tick automatically appears in the database backup as well). Bah !
Can someone please tell me what simple steps are required to get this to work. I need specifically on what options to chose during the backup and restore processes.
Thankyou,
Tim
Given one table with one column and two rows, one containing the string 'Bill', one containing the string 'Gates'.
Write a select statement which gives you the result 'Bill Gates'.
???+
Hi All,
I have a table with 2 columns which looks like the following.
IDText
-------------
1AAA
1BBB
1CCC
2DDD
2EEE
2FFF
3GGG
3HHH
3III
Each ID can have multiple texts associated with it. I want to write a query that gives me the following output.
IDText
-------------
1AAA; BBB; CCC
2DDD; EEE; FFF
3GGG; HHH; III
I appreciate your help
Thanks
Hi All,
I have a table with 2 columns which looks like the following.
IDText
-------------
1AAA
1BBB
1CCC
2DDD
2EEE
2FFF
3GGG
3HHH
3III
Each ID can have multiple texts associated with it. I want to write a query that gives me the following output.
IDText
-------------
1AAA; BBB; CCC
2DDD; EEE; FFF
3GGG; HHH; III
I appreciate your help
Thanks
Hi,
I have a table with two columns. I need to find distinct value of col1 and the correspondin repeated value of col2 for that col1 value with comma seperated list. Is there any function
for this in MS SQL?
I need somethgn like
a 1,2,3
b 4,5
c 7
d 5,55,5
I can do that with creating 2 cursors but looking for some easy way around.
Any suggestion and help highly appretiate.
Thanks
incorrect syntax near #
how do i fix this and did i make any other errors?
SELECT Master.CheckNum, Master.CheckDate, Master.ExpenseType, Deal.Alias, Detail.InvoiceDate, Detail.InvoiceAmount, Detail.Person, Detail.Deal, Detail.InvoiceNum, Detail.Reference, Detail.idDetial
FROM Master INNER JOIN (Deal INNER JOIN Detail ON Deal.Deal = Detail.Deal) ON Master.CheckNum = Detail.CheckNum
WHERE (((Master.CheckDate)>#12/5/2005#) AND ((Deal.Alias)="aic"));
Originally i had:
DELETE FROM #RptDetails WHERE StructureType <> @StructureType
AND #RptDetails WHERE #RptDetails.TraderId <> @TraderId OR #RptDetails.TraderId is null
But it didnt delete the structure types i changed to :
DELETE FROM #RptDetails WHERE StructureType <> @StructureType --AND
DELETE FROM #RptDetails WHERE #RptDetails.TraderId <> @TraderId OR #RptDetails.TraderId is null
and it did, how do i format the 2nd sql into 1 statement and what was i doing wrong?
Hi,
How do I sum all of the returned values into my output param ? This returns multiple rows, all data is oftype decimal.
Thanks
Bob
ALTER proc
spPSICalcA9
@iReturn int output,
@Contract varchar (8)
as
Select
sd.HoursLostRain,
sd.HoursLostMaxT,
sd.HoursLostMinT,
sd.HoursLostFrost,
sd.HoursLostWind,
sd.HoursLostVis
from
SiteDiary sd
where
sd.Contract = @Contract
"I dislilke 7am. If &am were a person, I would kick 7am in the biscuits." - Paul Ryan, dailyramblings.com
Hi,
I need to return all records where ..
Contract = @Contract
AND
CrossReference is null or ""
I have this but I dont think its right..
Bob
where
a.Contract = @Contract AND a.crossreference is null OR a.crossreference = ""
"I dislilke 7am. If &am were a person, I would kick 7am in the biscuits." - Paul Ryan, dailyramblings.com
I think it's simple, but I can't get it to work.In English its: find records in TableA where the field [Field1] hasmore than one unique value in Field2sample records in TableAField1 Field22241 123452241 123452242 123452242 99856desired return (2 records)2242 123452242 99856thank you for your helpPaul
View 3 Replies View RelatedI have a form that after being filled out has its contents written to adatabase and then goes to confirmation .asp page. I want the confirmationpage to be personalized but I am not sure how to pass the "name" parameterto the confirmation.asp page. I know I am going to kick myself whrn I seethis.Thanks, Houston
View 7 Replies View RelatedGreetings,
I'm trying to find out if a particular column in a table has more than 10 digits. for example: the TN column.
How can I write this query? The data type for this column is bigint. Also, would it be better to change this data type to char(10) instead as it's used primarily for phone # lookups? Thanks in advance!
ID TN
1 7132483234
Hi, Im trying to create a simple search page to return a list of products from a table in a sql database. Id like to be able to search a product description column in a table I have called products using the contents of a text box. I was wondering how i can go about getting the search to check for all words the user types in rather than just a single word or an exact phrase. Im currently using the following sql query
SELECT [product_title], [product_description] FROM [products] WHERE ([product_description] LIKE '%' + @product_search + '%')
this works fine for single words and exact phrases but if i had product called 'fred w bloggs' and i enter 'fred bloggs' it will not return anything.
Please could anyone suggest how i shoud go about this?
Im not sure if my web hosting company will enable full text search or will this be required?
Thanks for any help!
pete_ (very new to asp.net!)
hay friends
scene is that i wana read single multiple rows of a single column from a sql database and then want to shows those values in text box,,,
so plz tell me ho to do it.
By using data set ,,data table or what to use for this and how....
wll be waiting for ur coordination
Hi;
I know it must be really easy but I couldn't somehow figure it out:
3 columns: pms_ID, pms_UserID, pms_FlagSeen 1 ab1 True 2 ab1 True 3 ab1 True 4 ab1 False 5 ab2 True 6 ab2 False
All I want is to count number of Falses and Total (Trues and Falses) belonging to Users (I mean by pms_UserID)
Any help would be appreciated..
Regards...
I don't want to use any of the big fancy Data presentation controls like GridView, Datalist, etc. I just want to do a programmatic reading of a SQL DB field and then post its contents to a label's text property. I have programmatic connection and select statements that seem to work okay. The code I have written so far is shown below. I just need to know what code should go in place of the long underlined portion...(oh, and pardon my newbie ignorance)...
<%@ Import Namespace="System.Data" %><%@ Import Namespace="System.Web" %><%@ Import Namespace="System.Web.Configuration" %><%@ Import Namespace="System.Web.UI" %><%@ Import Namespace="System.Web.UI.WebControls" %>
<script runat="server">
Sub Page_Load() If Not IsPostBack Then
Dim PreviousContent As ContentPlaceHolder PreviousContent = CType(PreviousPage.Controls(0).FindControl("ContentPlaceHolder_Main"), ContentPlaceHolder) Dim PassedUserName As Label PassedUserName = CType(PreviousContent.FindControl("lblPassedUserName"), Label) lblPassedUserName.Text = PassedUserName.Text Dim ASPNETDB As SqlDataSource = New SqlDataSource() ASPNETDB.ConnectionString = WebConfigurationManager.ConnectionStrings("ASPNETDB").ConnectionString ASPNETDB.SelectCommand = "SELECT [UserName], [LastActivityDate] FROM [vw_aspnet_Users] WHERE ([UserName] = @UserName)" lblUserName.Text = _____________________________________________________ End If End Sub </script>
OMG PLEASE HELP!!
I have a trigger that is supposed to run a stored procedure. The stored procedure runs great. but when I put it in the trigger it doesn't run and the table does not insert. Why?
Here is the trigger.USE [Ciena_new]
GO
ALTER TRIGGER [dbo].[tr_Page_INSERT]
ON [dbo].[SWIRLChatroom]AFTER INSERT
AS
exec sp_send_cdosysmail 'dstock@eskillz.com','dstock@eskillz.com','Test of CDOSYS', 'Test'
GO
Please help me!!
Derek
I am trying to make a single display page for an author's books.the books page only displays books of a type "type" (novels, non-fiction, etc)I would like to make it so that it can also show all books if "type" isn't selected. I THOUGHT the string would look like this: <asp:SqlDataSource ID="SqlDSBooks" runat="server" ConnectionString="<%$ ConnectionStrings:csK2Reader %>"
SelectCommand="SELECT * FROM [Books] ( If @Type <> "" then WHERE ([Type] = @Type)) ORDER BY [SortDate] DESC"> But it doesn't seem to want to work. I get a "server tag is not well formed" error.