How To INSERT DBNull.Value's ? ...

Jan 26, 2004

Hello,





If I have a database table with column that can accept null values and I want to insert a null value into that column, what is the correct syntax?





db_cmd = New SqlCommand( "sp_stored_procedure", db_connection )


db_cmd.CommandType = CommandType.StoredProcedure


db_cmd.Parameters.Add( "@col_to_set_to_null", ??? )





ie: what expression can be used for "???"





Ideally, I want to check if a string value is empty and if so insert a null, but I have yet to see any examples, ie:





if ( str.empty ) then


insert DBNull.value into column


else


insert str into column


end if





Sincerely,





Brent D.

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What is the best way to deal with the issue, are there any possible drawbacks and problems.
Your input will be greatly appreciated.

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Hi
I have only been coding in .Net for about six months, and am not sure if this is a C# problem or an SQL one. I use the Data Access Application Block in my program.

I have two optional fields on my form (RangeFrom and RangeTo). If the user chooses not to enter data into these textboxes(textbox = ""), an entry on the db is created with null values. It works.

But sometimes the user wants to enter 0 as either an upper or lower end of a range. This is where my problem comes in. My program saves 0 as null too.

In my program I do a test on the textboxes and populate two float values in a business object (objQuestion) accordingly, like this:


if (txtrangefrom.Text != "") {
objQuestion.RangeFrom=float.Parse(txtrangefrom.Text);
objQuestion.RangeTo=float.Parse(txtrangeto.Text);
}
else {
objQuestion.RangeFrom=Convert.ToSingle(null);
objQuestion.RangeTo=Convert.ToSingle(null);
}


And this is what my Business object look like. It sets up the parameters and calls the Data Access Application Block to create an entry in my table:


// fieldslist
float cvintRangeFrom;
float cvintRangeTo;

//properties
public float RangeFrom {
get {
return cvintRangeFrom;
}
set {
cvintRangeFrom = value;
}
}

public float RangeTo {
get {
return cvintRangeTo;
}
set {
cvintRangeTo = value;
}
}

// some code deleted for readability....

public int AddOption() {
string cvstrSpName = "addOption";
SqlParameter [] cvstrStoredParams = SqlHelperParameterCache.GetSpParameterSet(gcstrConnectionString, cvstrSpName, true);
//lines deleted for readability...
//check if the optional fields have a value associated with them. if not, assign dbnull.value.
cvstrStoredParams[4].Value=(cvintRangeFrom != Convert.ToSingle(null) ? cvintRangeFrom : (object)DBNull.Value);
cvstrStoredParams[5].Value=(cvintRangeTo != Convert.ToSingle(null) ? cvintRangeTo : (object)DBNull.Value);
//lines deleted for readability...
SqlHelper.ExecuteNonQuery(gcstrConnectionString, CommandType.StoredProcedure, cvstrSpName, cvstrStoredParams);
return(cvintOptionID = Convert.ToInt32(cvstrStoredParams[0].Value));
}


I use Convert.ToSingle when working with nulls (or possible nulls) because I get an error when I use float.parse for this.

The thing is, after this method AddOption has been executed, I test the value if the business object's rangefrom (that is where I entered 0) and display it on my form. I still shows a 0, but on my database table it is null!


objQuestion.AddOption();
//txtrangefrom.Text=""; on the next line I test the value in the business object...
txtrangefrom.Text=objQuestion.RangeFrom.ToString(); // and this displays 0!!!
//txtrangeto.Text="";
txtrangeto.Text=objQuestion.RangeTo.ToString();


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I haven't tested it, because at the moment I can't access my SQL database
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can I do something like: if(reader["Column1"] != DBNull.Value)or with the reader["Column1"] throw an error because it is not found??
I too hate when people ask questions that they could test themselves...but I can't really test it at the moment.  Any input would be greatly appreciated.
 

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Hi!
I was trying to use the ?? operator with an DBDatareader. eg:
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Is there a better way of doing this ? Can one use the ?? operator with a Datareader anyway?
Thanks for your help!
PS: sorry for my poor english.

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Apr 24, 2006

Hi,
I have built a few pages and a stored procedure and a class on the back of a SQL2000 dbase. and I get the following error:
 
Cast from type 'DBNull' to type 'String' is not valid.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.InvalidCastException: Cast from type 'DBNull' to type 'String' is not valid.Source Error:




Line 111: Dim myWorkJobs As WorkJobsDATA = New WorkJobsDATA
Line 112:
Line 113: myWorkJobs.CustomerID = CStr(parameterCustomerID.Value)
Line 114: myWorkJobs.WorkID = CStr(parameterWorkID.Value)
Line 115: myWorkJobs.DateOfQuote = CStr(parameterDateOfQuote.Value).Trim()
Source File: C:InetpubwwwrootCommerceComponentsWorkJobs.vb    Line: 113
 
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ASPX VB:
Public Class WorkRequest    Inherits System.Web.UI.Page
    Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load        'Put user code to initialize the page here    End Sub
    Private Sub btnEnter_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnEnter.Click
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        Dim IndividualID As String = "3425243"
        Response.Redirect("WorkRequestMain.aspx?IndividualID=" & IndividualID)    End SubEnd Class
 
COMPONENTSWorkJobs.vb (This is the class file)
 
Imports SystemImports System.ConfigurationImports System.DataImports System.Data.SqlClient
Namespace ASPNET.StarterKit.Commerce
        Public Class WorkJobsDATA
        Public CustomerID As String        Public WorkID As String        Public DateOfQuote As String        Public QuoteAmount As String        Public Title As Decimal        Public FirstName As String        Public Surname As String        Public FirstLine As String        Public District As String        Public Town As String        Public Postcode As String        Public Telephone As String        Public Requirements As String        Public WorkRequired As String        Public EmailAddress As String
    End Class
    Public Class WorkJobs
        Public Function GetWorkDetails(ByVal IndividualID As String) As WorkJobsDATA
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            Dim parameterCustomerID As SqlParameter = New SqlParameter("@CustomerID", SqlDbType.BigInt, 8)            parameterCustomerID.Direction = ParameterDirection.Output            myCommand.Parameters.Add(parameterCustomerID)
            Dim parameterWorkID As SqlParameter = New SqlParameter("@WorkID", SqlDbType.NVarChar, 50)            parameterWorkID.Direction = ParameterDirection.Output            myCommand.Parameters.Add(parameterWorkID)
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            Dim parameterQuoteAmount As SqlParameter = New SqlParameter("@QuoteAmount", SqlDbType.Money, 8)            parameterQuoteAmount.Direction = ParameterDirection.Output            myCommand.Parameters.Add(parameterQuoteAmount)
            Dim parameterTitle As SqlParameter = New SqlParameter("@Title", SqlDbType.NVarChar, 50)            parameterTitle.Direction = ParameterDirection.Output            myCommand.Parameters.Add(parameterTitle)
            Dim parameterFirstName As SqlParameter = New SqlParameter("@FirstName", SqlDbType.NVarChar, 50)            parameterFirstName.Direction = ParameterDirection.Output            myCommand.Parameters.Add(parameterFirstName)
            Dim parameterSurname As SqlParameter = New SqlParameter("@Surname", SqlDbType.NVarChar, 50)            parameterSurname.Direction = ParameterDirection.Output            myCommand.Parameters.Add(parameterSurname)
            Dim parameterFirstLine As SqlParameter = New SqlParameter("@FirstLine ", SqlDbType.NVarChar, 50)            parameterFirstLine.Direction = ParameterDirection.Output            myCommand.Parameters.Add(parameterFirstLine)
            Dim parameterDistrict As SqlParameter = New SqlParameter("@District", SqlDbType.NVarChar, 50)            parameterDistrict.Direction = ParameterDirection.Output            myCommand.Parameters.Add(parameterDistrict)
            Dim parameterTown As SqlParameter = New SqlParameter("@Town", SqlDbType.NVarChar, 50)            parameterTown.Direction = ParameterDirection.Output            myCommand.Parameters.Add(parameterTown)
            Dim parameterPostcode As SqlParameter = New SqlParameter("@Postcode", SqlDbType.NVarChar, 50)            parameterPostcode.Direction = ParameterDirection.Output            myCommand.Parameters.Add(parameterPostcode)
            Dim parameterTelephone As SqlParameter = New SqlParameter("@Telephone", SqlDbType.NVarChar, 50)            parameterTelephone.Direction = ParameterDirection.Output            myCommand.Parameters.Add(parameterTelephone)
            Dim parameterRequirements As SqlParameter = New SqlParameter("@Requirements", SqlDbType.NVarChar, 3500)            parameterRequirements.Direction = ParameterDirection.Output            myCommand.Parameters.Add(parameterRequirements)
            Dim parameterWorkRequired As SqlParameter = New SqlParameter("@WorkRequired", SqlDbType.NVarChar, 3500)            parameterWorkRequired.Direction = ParameterDirection.Output            myCommand.Parameters.Add(parameterWorkRequired)
            Dim parameterEmailAddress As SqlParameter = New SqlParameter("@EmailAddress", SqlDbType.NVarChar, 100)            parameterEmailAddress.Direction = ParameterDirection.Output            myCommand.Parameters.Add(parameterEmailAddress)
            myConnection.Open()            myCommand.ExecuteNonQuery()            myConnection.Close()
            parameterEmailAddress.Value.GetType()
            Dim myWorkJobs As WorkJobsDATA = New WorkJobsDATA
            myWorkJobs.CustomerID = CStr(parameterCustomerID.Value)            myWorkJobs.WorkID = CStr(parameterWorkID.Value)            myWorkJobs.DateOfQuote = CStr(parameterDateOfQuote.Value).Trim()            myWorkJobs.Title = CStr(parameterTitle.Value).Trim()            myWorkJobs.FirstName = CStr(parameterFirstName.Value).Trim()            myWorkJobs.Surname = CStr(parameterSurname.Value).Trim()            myWorkJobs.FirstLine = CStr(parameterFirstLine.Value).Trim()            myWorkJobs.District = CStr(parameterDistrict.Value).Trim()            myWorkJobs.Town = CStr(parameterTown.Value).Trim()            myWorkJobs.Postcode = CStr(parameterPostcode.Value).Trim()            myWorkJobs.Telephone = CStr(parameterTelephone.Value).Trim()            myWorkJobs.Requirements = CStr(parameterRequirements.Value).Trim()            myWorkJobs.WorkRequired = CStr(parameterWorkRequired.Value).Trim()            myWorkJobs.EmailAddress = CStr(parameterEmailAddress.Value).Trim()
            Return myWorkJobs
        End Function
    End ClassEnd Namespace
 
And finally my stored procedure:
CREATE Procedure SP_PendingQuotes(    @IndividualID    nvarchar,    @CustomerID bigint OUTPUT,    @WorkID    nvarchar(50) OUTPUT,    @DateOfQuote datetime OUTPUT,    @QuoteAmount money OUTPUT,    @Title     nvarchar(50) OUTPUT,    @FirstName  nvarchar(50) OUTPUT,    @Surname  nvarchar(50) OUTPUT,    @FirstLine  nvarchar(50) OUTPUT,    @District  nvarchar(50) OUTPUT,    @Town  nvarchar(50) OUTPUT,    @Postcode  nvarchar(50) OUTPUT,    @Telephone  nvarchar(50) OUTPUT,    @Requirements  nvarchar(3500) OUTPUT,    @WorkRequired  nvarchar(3500) OUTPUT,    @EmailAddress  nvarchar(100) OUTPUT)AS
SELECT     @IndividualID = IndividualID,    @CustomerID = CustomerID,    @WorkID = WorkID,    @DateOfQuote = DateOfQuote,    @QuoteAmount = QuoteAmount,    @Title = Title,    @FirstName = FirstName,    @Surname = Surname,    @FirstLine = FirstLine,    @District = District,    @Town = Town,    @Postcode = Postcode,    @Telephone = Telephone,    @Requirements = Requirements,    @WorkRequired = WorkRequired,    @EmailAddress = EmailAddress
FROM     PendingQuotes
WHERE     IndividualID = @IndividualIDGO
 
 
 
Any ideas anyone?
I appreciate this is a big amount of data, but if anyone wants to chat to me i'm available on MSN Messenger under wolvokid@msn.com
 
 
 

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An insert statement was not inserting all the data into a table. Found it very strange as the other fields in the row were inserted. I ran SQL profiler and found that sql statement had all the fields in the insert statement but some of the fields were not inserted. Below is the sql statement which is created dyanmically by a asp.net C# class. The columns which are not inserted are 'totaltax' and 'totalamount' ...while the 'shipto_name' etc...were inserted.there were not errors thrown. The sql from the code cannot be shown here as it is dynamically built referencing C# class files.It works fine on another test database which uses the same dlls. The only difference i found was the difference in date formats..@totalamount=1625.62,@totaltax=125.62are not inserted into the database.Below is the statement copied from SQL profiler.exec sp_executesql N'INSERT INTO salesorder(billto_city, billto_country, billto_line1, billto_line2, billto_name,billto_postalcode, billto_stateorprovince, billto_telephone, contactid, CreatedOn, customerid, customeridtype,DeletionStateCode, discountamount, discountpercentage, ModifiedOn, name, ordernumber,pricelevelid, salesorderId, shipto_city, shipto_country,shipto_line1, shipto_line2, shipto_name, shipto_postalcode, shipto_stateorprovince,shipto_telephone, StateCode, submitdate, totalamount,totallineitemamount, totaltax ) VALUES(@billto_city, @billto_country, @billto_line1, @billto_line2,@billto_name, @billto_postalcode, @billto_stateorprovince, @billto_telephone, @contactid, @CreatedOn, @customerid,@customeridtype, @DeletionStateCode, @discountamount,@discountpercentage, @ModifiedOn, @name, @ordernumber, @pricelevelid, @salesorderId,@shipto_city, @shipto_country, @shipto_line1, @shipto_line2,@shipto_name, @shipto_postalcode, @shipto_stateorprovince, @shipto_telephone,@StateCode, @submitdate, @totalamount, @totallineitemamount, @totaltax)',N'@billto_city nvarchar(8),@billto_country nvarchar(13),@billto_line1 nvarchar(3),@billto_line2 nvarchar(4),@billto_name nvarchar(15),@billto_postalcode nvarchar(5),@billto_stateorprovince nvarchar(8),@billto_telephone nvarchar(3),@contactid uniqueidentifier,@CreatedOn datetime,@customerid uniqueidentifier,@customeridtype int,@DeletionStateCode int,@discountamount decimal(1,0),@discountpercentage decimal(1,0),@ModifiedOn datetime,@name nvarchar(33),@ordernumber nvarchar(18),@pricelevelid uniqueidentifier,@salesorderId uniqueidentifier,@shipto_city nvarchar(8),@shipto_country nvarchar(13),@shipto_line1 nvarchar(3),@shipto_line2 nvarchar(4),@shipto_name nvarchar(15),@shipto_postalcode nvarchar(5),@shipto_stateorprovince nvarchar(8),@shipto_telephone nvarchar(3),@StateCode int,@submitdate datetime,@totalamount decimal(6,2),@totallineitemamount decimal(6,2),@totaltax decimal(5,2)',@billto_city=N'New York',@billto_country=N'United States',@billto_line1=N'454',@billto_line2=N'Road',@billto_name=N'Hillary Clinton',@billto_postalcode=N'10001',@billto_stateorprovince=N'New York',@billto_telephone=N'124',@contactid='8DAFE298-3A25-42EE-B208-0B79DE653B61',@CreatedOn=''2008-04-18 13:37:12:013'',@customerid='8DAFE298-3A25-42EE-B208-0B79DE653B61',@customeridtype=2,@DeletionStateCode=0,@discountamount=0,@discountpercentage=0,@ModifiedOn=''2008-04-18 13:37:12:013'',@name=N'E-Commerce Order (Before billing)',@ordernumber=N'BRKV-CC-OKRW5764YS',@pricelevelid='B74DB28B-AA8F-DC11-B289-000423B63B71',@salesorderId='9CD0E11A-5A6D-4584-BC3E-4292EBA6ED24',@shipto_city=N'New York',@shipto_country=N'United States',@shipto_line1=N'454',@shipto_line2=N'Road',@shipto_name=N'Hillary Clinton',@shipto_postalcode=N'10001',@shipto_stateorprovince=N'New York',@shipto_telephone=N'124',@StateCode=0,@submitdate=''2008-04-18 14:37:10:140'',@totalamount=1625.62,@totallineitemamount=1500.00,@totaltax=125.62
 
thanks

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Cannot INSERT Data To 3 Tables Linked With Relationship (INSERT Statement Conflicted With The FOREIGN KEY Constraint Error)

Apr 9, 2007

Hello
 I have a problem with setting relations properly when inserting data using adonet. Already have searched for a solutions, still not finding a mistake...
Here's the sql management studio diagram :

 and here goes the  code1 DataSet ds = new DataSet();
2
3 SqlDataAdapter myCommand1 = new SqlDataAdapter("select * from SurveyTemplate", myConnection);
4 SqlCommandBuilder cb = new SqlCommandBuilder(myCommand1);
5 myCommand1.FillSchema(ds, SchemaType.Source);
6 DataTable pTable = ds.Tables["Table"];
7 pTable.TableName = "SurveyTemplate";
8 myCommand1.InsertCommand = cb.GetInsertCommand();
9 myCommand1.InsertCommand.Connection = myConnection;
10
11 SqlDataAdapter myCommand2 = new SqlDataAdapter("select * from Question", myConnection);
12 cb = new SqlCommandBuilder(myCommand2);
13 myCommand2.FillSchema(ds, SchemaType.Source);
14 pTable = ds.Tables["Table"];
15 pTable.TableName = "Question";
16 myCommand2.InsertCommand = cb.GetInsertCommand();
17 myCommand2.InsertCommand.Connection = myConnection;
18
19 SqlDataAdapter myCommand3 = new SqlDataAdapter("select * from Possible_Answer", myConnection);
20 cb = new SqlCommandBuilder(myCommand3);
21 myCommand3.FillSchema(ds, SchemaType.Source);
22 pTable = ds.Tables["Table"];
23 pTable.TableName = "Possible_Answer";
24 myCommand3.InsertCommand = cb.GetInsertCommand();
25 myCommand3.InsertCommand.Connection = myConnection;
26
27 ds.Relations.Add(new DataRelation("FK_Question_SurveyTemplate", ds.Tables["SurveyTemplate"].Columns["id"], ds.Tables["Question"].Columns["surveyTemplateID"]));
28 ds.Relations.Add(new DataRelation("FK_Possible_Answer_Question", ds.Tables["Question"].Columns["id"], ds.Tables["Possible_Answer"].Columns["questionID"]));
29
30 DataRow dr = ds.Tables["SurveyTemplate"].NewRow();
31 dr["name"] = o[0];
32 dr["description"] = o[1];
33 dr["active"] = 1;
34 ds.Tables["SurveyTemplate"].Rows.Add(dr);
35
36 DataRow dr1 = ds.Tables["Question"].NewRow();
37 dr1["questionIndex"] = 1;
38 dr1["questionContent"] = "q1";
39 dr1.SetParentRow(dr);
40 ds.Tables["Question"].Rows.Add(dr1);
41
42 DataRow dr2 = ds.Tables["Possible_Answer"].NewRow();
43 dr2["answerIndex"] = 1;
44 dr2["answerContent"] = "a11";
45 dr2.SetParentRow(dr1);
46 ds.Tables["Possible_Answer"].Rows.Add(dr2);
47
48 dr1 = ds.Tables["Question"].NewRow();
49 dr1["questionIndex"] = 2;
50 dr1["questionContent"] = "q2";
51 dr1.SetParentRow(dr);
52 ds.Tables["Question"].Rows.Add(dr1);
53
54 dr2 = ds.Tables["Possible_Answer"].NewRow();
55 dr2["answerIndex"] = 1;
56 dr2["answerContent"] = "a21";
57 dr2.SetParentRow(dr1);
58 ds.Tables["Possible_Answer"].Rows.Add(dr2);
59
60 dr2 = ds.Tables["Possible_Answer"].NewRow();
61 dr2["answerIndex"] = 2;
62 dr2["answerContent"] = "a22";
63 dr2.SetParentRow(dr1);
64 ds.Tables["Possible_Answer"].Rows.Add(dr2);
65
66 myCommand1.Update(ds,"SurveyTemplate");
67 myCommand2.Update(ds, "Question");
68 myCommand3.Update(ds, "Possible_Answer");
69 ds.AcceptChanges();
70

and that causes (at line 67):"The INSERT statement conflicted with the FOREIGN KEY constraint
"FK_Question_SurveyTemplate". The conflict occurred in database
"ankietyzacja", table "dbo.SurveyTemplate", column
'id'.
The statement has been terminated.
at System.Data.Common.DbDataAdapter.UpdatedRowStatusErrors(RowUpdatedEventArgs rowUpdatedEvent, BatchCommandInfo[] batchCommands, Int32 commandCount)
at System.Data.Common.DbDataAdapter.UpdatedRowStatus(RowUpdatedEventArgs rowUpdatedEvent, BatchCommandInfo[] batchCommands, Int32 commandCount)
at System.Data.Common.DbDataAdapter.Update(DataRow[] dataRows, DataTableMapping tableMapping)
at System.Data.Common.DbDataAdapter.UpdateFromDataTable(DataTable dataTable, DataTableMapping tableMapping)
at System.Data.Common.DbDataAdapter.Update(DataSet dataSet, String srcTable)
at AnkietyzacjaWebService.Service1.createSurveyTemplate(Object[] o) in J:\PL\PAI\AnkietyzacjaWebService\AnkietyzacjaWebServicece\Service1.asmx.cs:line 397"


Could You please tell me what am I missing here ?
Thanks a lot.
 

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Is there a way to avoid entering column names in the excel template for me to create an excel file froma  dynamic excel using openrowset.
I have teh following code but it works fien when column names are given ahead of time.
If I remove the column names from the template and just to Select * from the table and Select * from sheet1 then it tells me that column names donot match.
 Server: Msg 213, Level 16, State 5, Line 1Insert Error: Column name or number of supplied values does not match table definition.
here is my code...
SET @sql1='select * from table1'SET @sql2='select * from table2'  
IF @File_Name = ''      Select @fn = 'C:Test1.xls'     ELSE      Select @fn = 'C:' + @File_Name + '.xls'        -- FileCopy command string formation     SELECT @Cmd = 'Copy C:TestTemplate1.xls ' + @fn     
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exec('insert into OPENrowset(''' + @provider + ''',''' + @ExcelString + ''',''SELECT *     FROM [Sheet1$]'')      '+ @sql1 + '')         exec('insert into OPENrowset(''' + @provider + ''',''' + @ExcelString + ''',''SELECT *     FROM [Sheet2$]'')      '+ @sql2 + ' ')   
 
 

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Hello, I'm new to the forum and new to SQL, ASP.NET, etc.  I am creating an intranet site for my company in VS 2005 and have run into a very annoying problem that I can't seem to solve.  I have tried Googling it and came up empty.  I have a database in SQL Express 2005 and my website will be accessing several tables within the database.  I can retrieve info just fine and I can update, delete, etc just fine using gridview or other prebuilt tools, but when I add a few text boxes and wire a button to the SqlDataSource.Insert() command, I get a new record that is full of null values except for the identity key I have set.  The kicker is that I am also using a master page and when I duplicate the web page without the master page link, everything works just fine.  The following snippets show what I'm doing:<InsertParameters><asp:FormParameter Name="Name" Type="String" FormField="txtName" /><asp:FormParameter Name="Location" Type="String" FormField="ddlLocation" /><asp:FormParameter Name="Issue" Type="String" FormField="txtProblem" /></InsertParameters>Of course I match the formfields to the text boxes, create an onclick event for my button, the sqldatasource is configured correctly, it just doesn't work with the master page no matter what I do. Any help would be appreciated. Thanks

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On my site users can register using ASP Membership Create user Wizard control.
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it has 2 questions including a text box for Q1 and  dropdown list for Q2.
I have a table in my database called "Players" which has 3 Columns
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On completing the wizard and clicking the finish button, I want the data to be inserted into the SQl express Players table.
I am having problems getting this to work and keep getting exceptions.
 Be very helpful if somebody could check the code and advise where the problem is??
 
 
<asp:Wizard ID="Wizard1" runat="server" BackColor="#F7F6F3"
BorderColor="#CCCCCC" BorderStyle="Solid" BorderWidth="1px"
DisplaySideBar="False" Font-Names="Verdana" Font-Size="0.8em" Height="354px"
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<SideBarTemplate>
<asp:DataList ID="SideBarList" runat="server">
<ItemTemplate>
<asp:LinkButton ID="SideBarButton" runat="server" BorderWidth="0px"
Font-Names="Verdana" ForeColor="White"></asp:LinkButton>
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<SelectedItemStyle Font-Bold="True" />
</asp:DataList>
</SideBarTemplate>
<StepStyle BackColor="#669999" BorderWidth="0px" ForeColor="#5D7B9D" />
<NavigationStyle VerticalAlign="Top" />
<WizardSteps>
<asp:WizardStep runat="server">
<table class="style1">
<tr>
<td class="style4">
A<span class="style6">Player Name</span></td>
<td class="style3">
<asp:TextBox ID="PlayerName" runat="server"></asp:TextBox>
</td>
<td>
<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server"
ControlToValidate="PlayerName" ErrorMessage="RequiredFieldValidator"></asp:RequiredFieldValidator>
</td>
</tr>
<tr>
<td class="style5">
 
<td class="style3">
<asp:DropDownList ID="PlayerGenre" runat="server" Width="128px">
<asp:ListItem Value="-1">Select Genre</asp:ListItem>
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<asp:ListItem>Female</asp:ListItem>
</asp:DropDownList>
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<asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server"
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</tr>
</table>
  Sql Data Source
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ProviderName="<%$ ConnectionStrings:ConnectionString.ProviderName %>">
<InsertParameters>
<asp:Parameter Name="UserId" Type="Object" />
<asp:Parameter Name="PlayerName" Type="String" />
<asp:Parameter Name="PlayerGenre" Type="String" />
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</asp:SqlDataSource>
</asp:WizardStep>
 
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To match the answers to the user I get the UserId and insert this into the database to.protected void Wizard1_FinishButtonClick(object sender, WizardNavigationEventArgs e)
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MembershipUser myUser = Membership.GetUser(this.User.Identity.Name);
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Oct 12, 2007



Hi,
i have a file which consists data as below,

3
123||
456||
789||

Iam reading file using bulk insert and iam inserting these phone numbers into table having one column as below.


BULK INSERT TABLE_NAME FROM 'FILE_PATH'
WITH (KEEPNULLS,FIRSTROW=2,ROWTERMINATOR = '||')

but i want to insert the data into table having two columns. if iam trying to insert the data into table having two columns its not inserting.

can anyone help me how to do this?

Thanks,
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Jan 14, 2008


This problem is being seen on SQL 2005 SP2 + cumulative update 4

I am currently successfully using the output clause of an insert statement to return the identity values for inserted rows into a table variable

I now need to add an "instead of insert" trigger to the table that is the subject of the insert.

As soon as I add the "instead of insert" trigger, the output clause on the insert statement does not return any data - although the insert completes successfully. As a result I am not able to obtain the identities of the inserted rows

Note that @@identity would return the correct value in the test repro below - but this is not a viable option as the table in question will be merge replicated and @@identity will return the identity value of a replication metadata table rather than the identity of the row inserted into my_table

Note also that in the test repro, the "instead of insert" trigger actually does nothing apart from the default insert, but the real world trigger has additional code.

To run the repro below - select each of the sections below in turn and execute them
1) Create the table
2) Create the trigger
3) Do the insert - note that table variable contains a row with column value zero - it should contain the @@identity value
4) Drop the trigger
5) Re-run the insert from 3) - note that table variable is now correctly populated with the @@identity value in the row

I need the behaviour to be correct when the trigger is present

Any thoughts would be much appreciated

aero1


/************************************************
1) - Create the table
************************************************/
CREATE TABLE [dbo].[my_table](
[my_table_id] [bigint] IDENTITY(1,1) NOT NULL,
[forename] [varchar](100) NULL,
[surname] [varchar](50) NULL,
CONSTRAINT [pk_my_table] PRIMARY KEY NONCLUSTERED
(
[my_table_id] ASC
)WITH (PAD_INDEX = OFF, IGNORE_DUP_KEY = OFF, FILLFACTOR = 70) ON [PRIMARY]
)

GO
/************************************************
2) - Create the trigger
************************************************/
CREATE TRIGGER [dbo].[trig_my_table__instead_insert] ON [dbo].[my_table]
INSTEAD OF INSERT
AS
BEGIN

INSERT INTO my_table
(
forename,
surname)
SELECT
forename,
surname
FROM inserted

END

/************************************************
3) - Do the insert
************************************************/

DECLARE @my_insert TABLE( my_table_id bigint )

declare @forename VARCHAR(100)
declare @surname VARCHAR(50)

set @forename = N'john'
set @surname = N'smith'

INSERT INTO my_table (
forename
, surname
)
OUTPUT inserted.my_table_id INTO @my_insert
VALUES( @forename
, @surname
)

select @@identity -- expect this value in @my_insert table
select * from @my_insert -- OK value without trigger - zero with trigger

/************************************************
4) - Drop the trigger
************************************************/

drop trigger [dbo].[trig_my_table__instead_insert]
go

/************************************************
5) - Re-run insert from 3)
************************************************/
-- @my_insert now contains row expected with identity of inserted row
-- i.e. OK

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Insert Rows With SQLServerce V3.5 Is Very Slow Can Anyone Help Insert Performance Poor

Feb 22, 2008



Hi All

I decided to change over from Microsoft Access Database file to the New SQLServerCe Compact edition. Although the reading of data from the database is greatly improved, the inserting of the new rows is extremely slow.

I was getting between 60 to 70 rows per sec using OLEDB and an Access Database but now only getting 14 to 27 rows per sec using SQLServerCe.

I have tried the below code changes and nothing seams to increase the speed, any help as I would prefer to use SQLServerCe as the database is much smaller and I€™m use to SQL Commands.

Details:
VB2008 Pro
.NET Frameworks 2.0
SQL Compact Edition V3.5
Encryption = Engine Default
Database Size = 128Mb (But needs to be changes to 999Mbs)

Where Backup_On_Next_Run, OverWriteQuick, CompressAns are Booleans, all other column sizes are nvarchar and size 10 to 30 expect for Full Folder Address size 260

TRY1

Direct Insert Using Data Adapter.

Me.BackupDatabaseTableAdapter1.Insert(Group_Name1, Full_Folder_Address1, File1, File_Size_KB1, Schedule_To_Run1, Backup_Time1, Last_Run1, Result1, Last_Modfied1, Last_Modfied1, Backup_On_Next_Run1, Total_Backup_Times1, Server_File_Number1, Server_Number1, File_Break_Down1, No_Of_Servers1, Full_File_Address1, OverWriteQuick, CompressAns)

14 to 20 rows per second (Was 60 to 70 when using OLEDB Access)


TRY 2

Using Record Sets

Private Sub InsertRecordsIntoSQLServerce(ByVal Group_Name1 As String, ByVal Full_Folder_Address1 As String, ByVal File1 As String, ByVal File_Size_KB1 As String, ByVal Schedule_To_Run1 As String, ByVal Backup_Time1 As String, ByVal Last_Run1 As String, ByVal Result1 As String, ByVal Last_Modfied1 As String, ByVal Latest_Modfied1 As String, ByVal Backup_On_Next_Run1 As Boolean, ByVal Total_Backup_Times1 As String, ByVal Server_File_Number1 As String, ByVal Server_Number1 As String, ByVal File_Break_Down1 As String, ByVal No_Of_Servers1 As String, ByVal Full_File_Address1 As String, ByVal OverWriteQuick As Boolean, ByVal CompressAns As Boolean)

Dim conn As SqlCeConnection = Nothing
Dim CommandText1 As String = "INSERT INTO BackupDatabase (Group_Name, Full_Full_Folder_Adress, File1,File_Size_KB, Schedule_To_Run, Backup_Time, Last_Run, Result, Last_Modfied, Latest_Modfied, Backup_On_Next_Run, Total_Backup_Times, Server_File_Number, Server_Number, File_Break_Down, No_Of_Servers, Full_File_Address, OverWrite, Compressed) VALUES ('" & Group_Name1 & "', '" & Full_Folder_Address1 & "', '" & File1 & "', '" & File_Size_KB1 & "', '" & Schedule_To_Run1 & "', '" & Backup_Time1 & "', '" & Last_Run1 & "', '" & Result1 & "', '" & Last_Modfied1 & "', '" & Latest_Modfied1 & "', '" & CStr(Backup_On_Next_Run1) & "', '" & Total_Backup_Times1 & "', '" & Server_File_Number1 & "', '" & Server_Number1 & "', '" & File_Break_Down1 & "', '" & No_Of_Servers1 & "', '" & Full_File_Address1 & "', '" & CStr(OverWriteQuick) & "', '" & CStr(CompressAns) & "')"
Try
conn = New SqlCeConnection(strConn)
conn.Open()

Dim cmd As SqlCeCommand = conn.CreateCommand()

cmd.CommandText = "SELECT * FROM BackupDatabase"
cmd.ExecuteNonQuery()
Dim rs As SqlCeResultSet = cmd.ExecuteResultSet(ResultSetOptions.Updatable Or ResultSetOptions.Scrollable)

Dim rec As SqlCeUpdatableRecord = rs.CreateRecord()

rec.SetString(1, Group_Name1)
rec.SetString(2, Full_Folder_Address1)
rec.SetString(3, File1)
rec.SetSqlString(4, File_Size_KB1)
rec.SetSqlString(5, Schedule_To_Run1)
rec.SetSqlString(6, Backup_Time1)
rec.SetSqlString(7, Last_Run1)
rec.SetSqlString(8, Result1)
rec.SetSqlString(9, Last_Modfied1)
rec.SetSqlString(10, Latest_Modfied1)
rec.SetSqlBoolean(11, Backup_On_Next_Run1)
rec.SetSqlString(12, Total_Backup_Times1)
rec.SetSqlString(13, Server_File_Number1)
rec.SetSqlString(14, Server_Number1)
rec.SetSqlString(15, File_Break_Down1)
rec.SetSqlString(16, No_Of_Servers1)
rec.SetSqlString(17, Full_File_Address1)
rec.SetSqlBoolean(18, OverWriteQuick)
rec.SetSqlBoolean(19, CompressAns)
rs.Insert(rec)
Catch e As Exception
MessageBox.Show(e.Message)
Finally
conn.Close()
End Try
End Sub

€™20 to 24 rows per sec

TRY 3

Using SQL Commands Direct

Private Sub InsertRecordsIntoSQLServerce(ByVal Group_Name1 As String, ByVal Full_Folder_Address1 As String, ByVal File1 As String, ByVal File_Size_KB1 As String, ByVal Schedule_To_Run1 As String, ByVal Backup_Time1 As String, ByVal Last_Run1 As String, ByVal Result1 As String, ByVal Last_Modfied1 As String, ByVal Latest_Modfied1 As String, ByVal Backup_On_Next_Run1 As Boolean, ByVal Total_Backup_Times1 As String, ByVal Server_File_Number1 As String, ByVal Server_Number1 As String, ByVal File_Break_Down1 As String, ByVal No_Of_Servers1 As String, ByVal Full_File_Address1 As String, ByVal OverWriteQuick As Boolean, ByVal CompressAns As Boolean)

Dim conn As SqlCeConnection = Nothing
Dim CommandText1 As String = "INSERT INTO BackupDatabase (Group_Name, Full_Full_Folder_Adress, File1,File_Size_KB, Schedule_To_Run, Backup_Time, Last_Run, Result, Last_Modfied, Latest_Modfied, Backup_On_Next_Run, Total_Backup_Times, Server_File_Number, Server_Number, File_Break_Down, No_Of_Servers, Full_File_Address, OverWrite, Compressed) VALUES ('" & Group_Name1 & "', '" & Full_Folder_Address1 & "', '" & File1 & "', '" & File_Size_KB1 & "', '" & Schedule_To_Run1 & "', '" & Backup_Time1 & "', '" & Last_Run1 & "', '" & Result1 & "', '" & Last_Modfied1 & "', '" & Latest_Modfied1 & "', '" & CStr(Backup_On_Next_Run1) & "', '" & Total_Backup_Times1 & "', '" & Server_File_Number1 & "', '" & Server_Number1 & "', '" & File_Break_Down1 & "', '" & No_Of_Servers1 & "', '" & Full_File_Address1 & "', '" & CStr(OverWriteQuick) & "', '" & CStr(CompressAns) & "')"

Try
conn = New SqlCeConnection(strConn)
conn.Open()

Dim cmd As SqlCeCommand = conn.CreateCommand()
cmd.CommandText = CommandText1
'cmd.CommandText = "INSERT INTO BackupDatabase (€¦"
cmd.ExecuteNonQuery()

Catch e As Exception
MessageBox.Show(e.Message)
Finally
conn.Close()
End Try
End Sub

€˜ 25 to 30 but mostly holds around 27 rows per sec I

Is this the best you can get or is there a better way. Any help would be greatly appericated

Kind Regards

John Galvin

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Hi

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T-SQL (SS2K8) :: Insert / Update Triggers When Insert Run Via Script

Oct 23, 2014

I'm working on inserting data into a table in a database. The table has two separate triggers, one for insert and one for update (I don't like it this way, but that's how it's been for years). When there is a normal insert, done via a program, it looks like the triggers work fine. When I run an insert manually via a script, the first insert trigger will run, but the update trigger will fail. I narrowed down the issue to a root cause.

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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Openquery Insert With Additional Columns For Manual Insert.

Apr 24, 2008



I am currently using openquery to insert data into a SQL 2000 database from a Lotus Notes database. The Lotus database is a linked server with a datasource named CLE_CARS_SF. My SQL table is called Webcases.

The query below works well because the table's columns are even in both databases:

Insert into Webcases select * from openquery(CLE_CARS_SF,
'Select * from Web_Cases')


I am moving this over to SQL 2005. The query works well, but I want to add a column to the Webcases SQL database and manually insert a value along with the openquery values.

My insert statement above no longer works because the column numbers don't match.

In a nutshell I would like a way to combine the following queries:

Insert into Webcases select * from openquery(CLE_CARS_SF,
'Select * from Web_Cases')

Insert into Webcases (insurancetype) Values ('SF')


--insurancetype is the new column.

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