SQL Mobile 3.0 (Update And Insert Question)

Feb 15, 2007

Is it possible If I use insert query to insert a record, but the record is already exist, it will automatically change insert to update?

And

I have a row: customer_name, last_update

is it possible to use sql to check if the customer_name I want to update is the same as the customer_name in database, it can automatically stop the update?



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(SQL Mobile)Can SELECT, But Cannot INSERT/UPDATE. Why Not?

Sep 27, 2006

I'm just getting started with using SQL Server Mobile while creating a handheld app using Visual Studio 2005. So far, I have succeeded in RETRIEVING data from the mobile database, but I don't understand why my INSERT nor UPDATE statements will not work. (I'm assuming they don't work, because after I run my code via the debugger, I oddly get no error message, but when I "open" the table in the Server Explorer, I do not see my expected results. Do I need to do some kind of "commit" or something? Here's my code. Thanks for any help! - Sue

-------------------------------------------

'Create SQL statement:
Dim strSQL As String
strSQL = "INSERT INTO MyTable (col1, col2) VALUES ('yucky', 'poo')"

'Create DB connection:
Dim connDB As New System.Data.SqlServerCe.SqlCeConnection
connDB.ConnectionString = ("Data Source =" _
+ (System.IO.Path.GetDirectoryName(System.Reflection.Assembly.GetExecutingAssembly.GetName.CodeBase) + "SueUWM.sdf;"))

'Create DB command:
Dim cmndDB As New System.Data.SqlServerCe.SqlCeCommand(strSQL, connDB)

'Open the connection:
connDB.Open()

'Execute the command:
Dim intRecordsAffected As Integer
Try
intRecordsAffected = cmndDB.ExecuteNonQuery()

If intRecordsAffected <> 1 Then
MessageBox.Show("Unable to insert into database.")
End If
Catch ex As Exception
MessageBox.Show(ex.ToString, "Insert Error")
End Try

'close the DB connection:

connDB.Close()

-------------------------------------------

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Mar 11, 2008

Howdy,

Am trying to find a way to insert/update/delete data in a SQL mobile database on a Windows CE 5.0 device FROM a desktop PC.

This situation is completely stand alone, no network (apart form device/desktop), no GPRS etc etc etc.

I've looked at RDA but i dont believe it fits my app. (pulling data from a 2005 server that doesnt exist doesnt really help me much, push can't be used without a pull which kills the idea.)

The goal is a UI on the desktop that can manipulate data in the SQL mobile Database.

I've tried all i can find/think off in relation to this but to no avail.

My latest attempt has been using the simplest method possible (using a VS wizard datasource to the devices DB and tryign to whack that on a form) but this just creates a "Path not found. Check the directory for the database [Path = Mobile Device/ce_swipe/TestDB.sdf".

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Jul 7, 2006

Hi all,

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Is this a known?

Tryst

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Where ItemID is a GUID, and ItemData is an Image field. The tableadapter has typed the parameters as GUID and Binary properly already.

Only problem is when I actually call the command with a byte array containing my file, I get a "Byte truncation" error message.

I remember this working properly in SQL CE 2.0 but so far I don't seem to get it to work in SQL mobile, anyone got any pointers?

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May 10, 2006

Hiya, last one (for a while), I swear. I'm getting the hang of this now (famous last words).



I've got a data file saved as an image type in my SQL Mobile database,
and I'm trying to send it over to my SS2005 Server via RDA, which seems
the simplest way possible. The application will only have
periodic rows to send over and insert into the Server's DB, so it seems
like doing a merge or a push is unnecessary overhead.



Is there some way to include parameters in the SQL string argument to
the method SubmitSQL? Or, embed the byte array into the SQL string? For
the life of me, I can't figure out how to do this.



So, if column data has type image, my statement would look like what?


string sSQL = "INSERT INTO sensor_stream (data) VALUES (what goes here?)";
rda.SubmitSql(SQL, strSQLConn);



.....

I've seen the solution being able to assign the image by using
parameters, but it seems that solution is not an option in this case?

Thank you in advance for your time and effort, I appreciate any and all help very much.

-Dana

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Feb 17, 2006



Hi,

I have created a database in the SQL Server 2005 and the same database in sql mobile. I have a field, which has a GUID and uniqueidentifier, when i tried to insert the same data which is there in sql server 2005 database into sql mobile database it is giving me error as below

Major Error 0x80040E14, Minor Error 25501

> INSERT INTO TypeValue (TypeValue_ID,DisplayValue,TypeName,OrderIndex,IsActive)

VALUES (b6483fe1-1118-4ba1-9106-0069715a75c0,Asian,ETHNICITY,1,TRUE)

There was an error parsing the query. [ Token line number = 2,Token line offset = 24,Token in error = ba1 ]

Please suggest me any solution.

Thank you,

Prashant

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Mar 2, 2006

Hello (sorry my bad english, im brazilian)

I was using Visual Studio 2003 and SQL Server CE 2.0 for C# mobile applications. The .sdf database were created in the emulator or in the mobile device itself using Query Analizer.

The application developed need some initial data to run, and this data is obtained executing one service that reads a postgree database, and insert the data in the SQL CE database of the mobile device. But, given the size of the database (maybe 10.000 rows), it tooks too much time (sometimes 6 hours).

Now we are migrating to Visual Studio 2005 and SQL Server 2005 Mobile Edition.

I want to know if its possible to create the .sdf database and load the data into this database on the desktop. Maybe through the execution of a .sql script, or through a service executed on the desktop.

After this, its just upload de .sdf file to the mobile device.

Thanks

Robson

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EXAMPLE:

CREATE TABLE dbo.MYTABLE(
ID NUMERIC(18,0) IDENTITY(1,1) NOT NULL,
FirstName VARCHAR(50) NULL,
LastName VARCHAR(50) NULL,

[Code] ....

If an INSERT looks like any of the following what can I do to change the NULL being assigned to DateAdded to a real date, preferable the value of GetDate() at the time of the insert? I've heard of INSTEAD of Triggers but I'm not trying tto over rise the entire INSERT or update just the on (maybe 2) fields that are being left as null or explicitly set to null. The same would apply for any UPDATE where DateModified is not specified or explicitly set to NULL. I would want to change it so that DateModified is not null on any UPDATE.

INSERT INTO dbo.MYTABLE( FirstName, LastName, DateAdded)
VALUES('John','Smith',NULL)

INSERT INTO dbo.MYTABLE( FirstName, LastName)
VALUES('John','Smith')

INSERT INTO dbo.MYTABLE( FirstName, LastName, DateAdded)
SELECT FirstName, LastName, NULL
FROM MYOTHERTABLE

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This root issue is due to both triggers using the same temporary table name. When the second trigger runs, there's an error stating that a few columns don't exist. I went to my test server and test db and changed the update trigger so that the temporary table is different than the insert trigger temporary table, the triggers work fine. The weird thing is that if the temporary table already exists, when the second trigger tries to create the temporary table, I would expect it to fail and say that it already exists.I'm probably just going to update the trigger tonight and change the temporary table name.

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Feb 15, 2008



Hello

I've to write an trigger for the following action

When a entry is done in the table Adoscat79 having in the index field Statut_tiers the valeur 1 and a date in data_cloture for a customer xyz

all the entries in the same table where the no_tiers is the same as the one entered (many entriers) should have those both field updated

statut_tiers to 1
and date_cloture to the same date as entered

the same action has to be done when an update is done and the valeur is set to 1 for the statut_tiers and a date entered in the field date_clture

thank you for your help
I've never done a trigger before

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Aug 8, 2006



Dear ppl,

I am writing an application for a device (MDA Pro T-Mobile) having Windows Mobile 5.0 using

-MS .NET Compact Framework 2.0 SP-1
-SQL Mobile 2005.
-VS 2005 .NET

The application uses Merge Replication. The error occurs in the Synchronise() Method of the SqlCeReplication object.

"SQL Server Mobile encountered problems when opening the database."

repl.AddSubscription(AddOption.CreateDatabase);
repl.Synchronize();

I don't understand why I am having this error. It does create the database on AddSubscription() method but it is failing opening the database on Synchronise(). I have also tried uninstalling and then reinstalling all the SQL Mobile components in the following order.

-sqlce30.wce5.armv4i.cab
-sqlce30.repl.wce5.armv4i.cab
-sqlce30.dev.ENU.wce5.armv4i.cab

However, when i run this application on a device(Dell X50 AXIM) with Pocket PC 2003, it runs fine creating the database and sysnchronising it.

The target platform for the project is Windows Mobile 5.0 Pocket PC SDK.

Does any one have any clue what could be the problem ?

Regards
Nabeel

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Jul 23, 2005

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Jun 15, 2006

I am migrating a pocket PC application from VS 2003 to VS 2005 and a few weeks ago I hit the following problem when replicating

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Scanning forums for help I saw that other people had had this problem and one

http://www.eggheadcafe.com/aspnet_answers/NETFrameworkCompactFramework/Feb2006/post25814466.asp

suggested that this problem could be circumvented by getting the replication object early and then continuously using the same object for subsequent replications.

I did this and it works a lot better now but ever so often I get another error which is

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My only option at this point is to stop and start the application which cures the problem.

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Mar 23, 2006

Hello,

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Do you know how I can resolve the problem ?

By advance, thank you for any answer.

--
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 scenario
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May 18, 2006

Using MS VS 2005 (incl SQL Server Mobile)
MS Pocket PC 2005 SDK

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Project created from new with support for both platforms. I include required header files ssceerr30.h and ssceoledb30.h.

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Mar 6, 2006



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Thanks

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Sep 8, 2007

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Open the application
Connect to the database
Close the applicaton
Re-Open the application
Connect to the database <-- Error occurs


I will also receive the error if my application isn't the first application launched (or very close to the first to launch).

I don't believe it's a memory issue as according to the memory manager I have plenty of memory:

At boot up only start screen items loaded: 18.46 Used 49.89 Free
Launch Resco File Explorer to click EXE: 19.18 Used 49.18 Free
Launch my application (no DB connection): 23.64 Used 44.71 Free
Connect to the DB and do select count(*) from a table with 0 rows: 26.27 Used 42.08 Free
Close the application (this.Close() on the form: 19.38 Used 48.97 Free
Relaunch App and connect to DB receive error: around 38 Used around 30 free

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The only way I have to get SQL CE to load again is to soft reset the PPC. If the application is able to connect to SQL CE at least once it is fine up till I close it and re-open the application. So it either connects and runs great, or it can't connect at all.

Any help in resolving this issue would be greatly appreciated.
Wayne

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Apr 24, 2006

Hi folks, I'm new to Windows Mobile progamming, and new to this forum. Apologies in advance if I'm asking a boneheaded question, but I've done searches and can't find anything directly applicable to my problem.

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I've gotten almost all the way through... successfully set up the server components, creating the publication, etc. On the mobile side, I've been able run the cab files to install the SQL Mobile components and to create the project, add the reference to the dll, and instantiate an engine object. It compiles.

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My guess is that something about the Mobile server side components is not installed correctly on my development machine, but honestly I have no idea how to begin to fix it. Has anyone seen this problem before and know how to resolve it?

Your time and any knowledge sharing is greatly appreciated.
Thank you,
-Dana

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Jul 21, 2006

This is a great tutorial and it's a shame one of the more important steps was missed.
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Nov 3, 2007

I am studying the tutorial in SQL Server 2005 Mobile Edition Books Online, and the topic is Creating a Mobile Application with SQL Server Mobile. I have got a problem when creating a new subscription after created a new SQL Server Mobile database. And the problem is shown below:

New Subscription Wizard

- Beginning Synchronization (Success)

- Synchronizing Data (100%) (Error)
Messages
* Failure to connect to SQL Server with provided connection information. SQL Server does not exist, access is denied because the IIS user is not a valid user on the SQL Server, or the password is incorrect.
HRESULT 0x80004005 (29061)

* 無法完�作業。


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- Saving Subscription Properties (Stopped)

Before I have met this problem, I have finished all the task. And I can browse the localhost web site by using anonymous account even I use internet explorer or browse the directly in IIS.

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versus
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Jul 15, 2005

greetings

I am developing an application for the marketing dept at my company.
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I am wanting the application to initailly save the content into a database, the update the most recently inserted row.

The save button uses the following SQL command:
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calCampaignDate.SelectedDate.ToString("yy/dd/MM") & "','" &
DestinationsSelected & "','" & FreeTextBox2.Text & "', '"
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And my update button has this SQL command:

        Dim SqlMethod As String =
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DestinationsSelected & "', BannerURL = '" & txtBannerPath.Text
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Exception Details: System.InvalidCastException: Object cannot be cast from DBNull to other types.
Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. 
Stack Trace:
[InvalidCastException: Object cannot be cast from DBNull to other types.]   System.DBNull.System.IConvertible.ToInt32(IFormatProvider provider) +54   System.Convert.ChangeType(Object value, TypeCode typeCode, IFormatProvider provider) +293   System.Web.UI.WebControls.SqlDataSourceView.AddParameters(DbCommand command, ParameterCollection reference, IDictionary parameters, IDictionary exclusionList, String oldValuesParameterFormatString) +577   System.Web.UI.WebControls.SqlDataSourceView.ExecuteUpdate(IDictionary keys, IDictionary values, IDictionary oldValues) +400   System.Web.UI.DataSourceView.Update(IDictionary keys, IDictionary values, IDictionary oldValues, DataSourceViewOperationCallback callback) +78   System.Web.UI.WebControls.GridView.HandleUpdate(GridViewRow row, Int32 rowIndex, Boolean causesValidation) +1173   System.Web.UI.WebControls.GridView.HandleEvent(EventArgs e, Boolean causesValidation, String validationGroup) +1084   System.Web.UI.WebControls.GridView.OnBubbleEvent(Object source, EventArgs e) +88   System.Web.UI.Control.RaiseBubbleEvent(Object source, EventArgs args) +35   System.Web.UI.WebControls.GridViewRow.OnBubbleEvent(Object source, EventArgs e) +117   System.Web.UI.Control.RaiseBubbleEvent(Object source, EventArgs args) +35   System.Web.UI.WebControls.LinkButton.OnCommand(CommandEventArgs e) +83   System.Web.UI.WebControls.LinkButton.RaisePostBackEvent(String eventArgument) +136   System.Web.UI.WebControls.LinkButton.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +7   System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +11   System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +172   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +4839
 
Protected Sub GridView1_RowUpdating(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewUpdateEventArgs) Handles GridView1.RowUpdating
Try
Dim eventid As Integer = CInt(GridView1.Rows(GridView1.EditIndex).Cells(7).ToString)
Dim userid As Integer = CInt(hfID.Value)
Dim guests As Integer = CInt(GridView1.Rows(GridView1.EditIndex).Cells(4).ToString)
Dim attending As Boolean = CBool(GridView1.Rows(GridView1.EditIndex).Cells(5).ToString)
Dim extra As String = Server.HtmlEncode(GridView1.Rows(GridView1.EditIndex).Cells(6).ToString)
InsertRecord(eventid, userid, guests, attending, extra)
Catch ex As Exception
End Try
End Sub






Function InsertRecord(ByVal eventID As Integer, ByVal userID As Integer, ByVal guests As Integer, ByVal attending As Boolean, ByVal extra As String) As Integer
Dim connectionString As String = "server='localhost'; trusted_connection=true; Database='AFRA'"
Dim sqlConnection As System.Data.SqlClient.SqlConnection = New System.Data.SqlClient.SqlConnection(connectionString)
Dim queryString As String = "INSERT INTO [AFRAAttendance] ([EventID], [UserID], [Guests], [Attending], [Extra]) VALUES (@EventID, @UserID, @Guests, @Attending, @Extra)"
Dim sqlCommand As System.Data.SqlClient.SqlCommand = New System.Data.SqlClient.SqlCommand(queryString, sqlConnection)
sqlCommand.Parameters.Add("@EventID", System.Data.SqlDbType.Int).Value = eventID
sqlCommand.Parameters.Add("@UserID", System.Data.SqlDbType.Int).Value = userID
sqlCommand.Parameters.Add("@Guests", System.Data.SqlDbType.Int).Value = guests
sqlCommand.Parameters.Add("@Attending", System.Data.SqlDbType.Bit).Value = attending
sqlCommand.Parameters.Add("@Extra", System.Data.SqlDbType.VarChar).Value = extra
Dim rowsAffected As Integer = 0
sqlConnection.Open()
Try
rowsAffected = sqlCommand.ExecuteNonQuery
Finally
sqlConnection.Close()
End Try
Return rowsAffected
End FunctionThank you

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Jan 6, 2006

Is it possible to run a DTS package so that it just updates existing rows rather than a full on insert?

I have an HR db as a source and a health and safety db as destination. records of peoples H+S acheivments and assessments are maintained in the H+S db but i need to keep this topped up with the newly recruited staff details and the existing staff change of details. The DTS need to know to insert where its a new record and to update where its just a change of name or work location etc.

if DTS wont do this, what are my options?

TIA

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There Has To Be A Better Way To INSERT/UPDATE

Aug 22, 2004

I have a form that pulls existing information from a database and allows users to edit it. Every field can be left blank if the user wishes. I am having an issue with determining which SQL statement to run. There has to be an easier way to do this then what I am doing. For each filed I process the data this way:

SQL2="select * from 1985ClassList where MailingListID =" & Session("EID")
set aData = oConn.execute(SQL2)


SQL = "Update 1985ClassList SET "

if aData.Fields("FirstName") > " " and Request.QueryString("FirstName") > " " then
SQL = SQL & "'FirstName' = '" & Request.QueryString("FirstName") & "', "
end if

if aData.Fields("FirstName") = " " and Request.QueryString("FirstName") > " " then
strFSQL = strFSQL & "FirstName, "
strVSQL = strVSQL & Request.QueryString("FirstName") & ", "
end if


SQL = SQL & "where MailingListID =" & Session("EID")
set mData = oConn.execute(SQL)

if strFSQL > " " then
SQL1 = "Insert into 1985ClassList " & strFSQL & "VALUES " & strVSQL
end if
set mData = oConn.execute(SQL1)

It works fine for the UPDATE, but not for the INSERT.

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Insert/Update

Sep 1, 2004

Hi,
Is it possible to Read data From a Table while Insertion/Update is happening on the table??
In case if this is not possible,Is there anyway to do that??

Thanks,
Karthik

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