Updating Colunm

Mar 18, 2008



Hello



Can some body help me in performing this?

I want to move the data from Colunm Value to Colunm CPublicID whenever CCField = 'PublicID' as shown below in green color( Without using Cursor or While loops)


CPubID ------------CCTable ------------CCField------------ DWTable------------ DWField ------------Value
101 XYZ Type Dimension Flag Related
101 XYZ ClaimAssocType Dimension Key Related
101 XYZ ID Dimension Flag 1890
101 XYZ ID Dimension Key 1890
101 XYZ PublicID Dimension Flag 103
101 XYZ PublicID Dimension Key 103
101 XYZ PublicID Dimension Flag 230
101 XYZ PublicID Dimension Key 230
101 XYZ PublicID Dimension Flag 5691
101 XYZ PublicID Dimension Key 5691



CPubID ------------CCTable ------------CCField------------ DWTable------------ DWField ------------Value
101 XYZ Type Dimension Flag Related
101 XYZ ClaimAssocType Dimension Key Related
101 XYZ ID Dimension Flag 1890
101 XYZ ID Dimension Key 1890
103 XYZ PublicID Dimension Flag 103
103 XYZ PublicID Dimension Key 103
230 XYZ PublicID Dimension Flag 230
230 XYZ PublicID Dimension Key 230
5691 XYZ PublicID Dimension Flag 5691
5691 XYZ PublicID Dimension Key 5691



Also , I need to know the best practice to perform the below process. Which of them is advisable?



I have a table, say as above, which has lots of data, say 100,000 records. I need to look at each row and perform certain updates/ trasnformation to a colunm (Value). I aslo, need to hold the old colunm. I came up with two method

Process A) Clone the table. So I have table2 which is a copy of table1. Read the Table1, update / trasnfored the Table2

Table1 Colunm(Value) will have Old values and table 2 colunm(Value) will have transformed values

Process B) Clone the Colunm. So I have a colunm Value and its clone Value2. Read the table and value for Colunm Value and Update the Value2.



I am using process A. because I beleive , process B, reading and updating same table make sthe entire process slow.



Please advice on th ebest industrial practice of doing this.



Thanks in advance for all the help


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Hi,I am currently updating a column in my database table with the value typed into a text box. But it is updating with the new value, rather than taking away the value typed in from the present value of the column. 1. How would i subtract the value typed in away from the current column value?2. I guess I need to check the column value is above 0 before updating, then rebind the control to show new values after the update has happened, incase two people are using it at once. How would this be achived? Thanks for any help!!Jon   P.S.My code is:private bool ExecuteUpdate(int quantity){  SqlConnection con = new SqlConnection();  con.ConnectionString = "Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\ASPNETDB.MDF;Integrated Security=True;User Instance=True";  con.Open();  SqlCommand command = new SqlCommand();  command.Connection = con;  TextBox TextBox1 = (TextBox)FormView1.FindControl("TextBox1");  Label labname = (Label)FormView1.FindControl("Label3");  Label labid = (Label)FormView1.FindControl("Label13");  command.CommandText = "UPDATE Items SET Quantityavailable = @qty WHERE productID=@productID";  command.Parameters.Add("@qty", TextBox1.Text);  command.Parameters.Add("@productID", labid.Text); command.ExecuteNonQuery();  con.Close();  return true;}    private bool ExecuteInsert(String quantity)    {        SqlConnection con = new SqlConnection();        con.ConnectionString = "Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\ASPNETDB.MDF;Integrated Security=True;User Instance=True";        con.Open();        SqlCommand command = new SqlCommand();        command.Connection = con;        TextBox TextBox1 = (TextBox)FormView1.FindControl("TextBox1");        Label labname = (Label)FormView1.FindControl("Label3");        Label labid = (Label)FormView1.FindControl("Label13");        command.CommandText = "INSERT INTO Transactions (Usersname)VALUES (@User)"+          "INSERT INTO Transactions (Itemid)VALUES (@productID)"+          "INSERT INTO Transactions (itemname)VALUES (@Itemsname)"+          "INSERT INTO Transactions (Date)VALUES (+DateTime.Now.ToString() +)"+          "INSERT INTO Transactions (Qty)VALUES (@qty)"+        command.Parameters.Add("@User", System.Web.HttpContext.Current.User.Identity.Name);        command.Parameters.Add("@Itemsname", labname.Text);        command.Parameters.Add("@productID", labid.Text);        command.Parameters.Add("@qty", TextBox1.Text);        command.ExecuteNonQuery();        con.Close();        return true;    }protected void Button2_Click(object sender, EventArgs e){  TextBox TextBox1 = FormView1.FindControl("TextBox1") as TextBox;  ExecuteUpdate(Int32.Parse(TextBox1.Text) );}protected void Button2_Command(object sender, CommandEventArgs e)    {        if (e.CommandName == "Update")        {            SqlDataSource1.Insert();        }    }}

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Updating A Column By The Value Of '1'

Nov 6, 2007

Hi,Its probably simple but.. How do I update a column by just '1'..for example - heres my code:    protected void Button1_Click(object sender, EventArgs e)    {        SqlConnection con = new SqlConnection();        con.ConnectionString = "HiddenConnection";        con.Open();        SqlCommand command = new SqlCommand();        command.Connection = con;        Label productIDLabel = (Label)DataList1.FindControl("productIDLabel");        command.CommandText = "UPDATE Items SET numberclickedin = numberclickedin + 1 WHERE productID=@productID";        command.Parameters.Add("@productID", productIDLabel.Text);        command.ExecuteNonQuery();        con.Close();        command.Dispose();    } As you can see in the bold text, I want to add 1 to the numberclickedin column.. and in my primative way Ive just typed +1What should I use instead?Thanks in advance,Jon 

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Jan 19, 2008

Consider i have 2 database namely database1 and database2 . both the databases are in the same server
database1 has a following tables
1.the table "class" has following fields and many more fields. consider 50 fields but for the use of example i have given only three fields name and sample values.     class        studentname           rollno  (table name - class)    8th std      aaaaa                     100
2. the table "Fees" has the following fields  and many more fields. consider 25 field but for the use of example i have gievn only 2 fields name and sample values    rollno              fees         (table name - fees)     100                50000     101                25000
Now i have created the following tables in database2  the table "class" has the following fields only,         class          studentname              rollnothe table "fees" has the following fields only.        rollno           fess  
Question ?please let me know if there is any tool or method . to transfer values from database1 to databse2
 
 
 

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Updating Using Textbox In VB

Jan 29, 2008

Hello
 How do u update the datafield of a row using buttonClick in vb? I have a details view whereby it will display the username and timeleft once log in. currently the datafield, timeleft on one user in the database is null. I'm using sqldatasource.
Once log in, it will direct to this page where the user enters a code on the textbox and click the enter button. This will cause an update on the user's timeleft. But the code must not be entered to the database.
 For eg. If code = 1111 then 'update timeleft = 60 The timeleft is in minutes. 60 will be stored as double in the user's row in the database. How do i do this?
Please help asap. Thanks! :)

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Input Box Not Updating

Feb 25, 2008

I have two textboxes on the page...shipdate and duedate.  When the page loads, shipdate has today's date loaded and duedate has a date that's 28 days later than today.  When I change the dates and submit it's not updating in the database instead I'm getting the two dates in pageload.  What am I doing wrong?Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
 
ShipDateTxt.Text = Today()
DueDateTxt.Text = DateAdd(DateInterval.Day, 28, Today())
End SubProtected Sub LoanRequest_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles LoanRequest.Click
Dim conn As New Data.SqlClient.SqlConnection(ConfigurationManager.ConnectionStrings("TrainUserConnectionString").ConnectionString)Dim cmd As New Data.SqlClient.SqlCommandWith cmd
.Connection = conn
.CommandType = Data.CommandType.StoredProcedure
.CommandText = "UpdateloanerInfo".Parameters.AddWithValue("@requestorid", Integer.Parse(Request.QueryString("requestorid")))
.Parameters.AddWithValue("@shipdate", ShipDateTxt.Text).Parameters.AddWithValue("@duedate", DueDateTxt.Text)
End With
Here's updateloanerinfo stored procedure:
@requestorid int,@shipdate datetime,@duedate datetime
AS update LibraryRequest
set [shipdate] = @shipdate,[duedate] = @duedate
Where  requestorid=@requestorid

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Mar 28, 2008

Hey guys, I periodically have to update maybe 300 records of the same column.. However, I've been udpating each record one by one.
Is there a way I can do something the following.ID   Name1    john2    chris3    adam4    ben5    steveupdate table1 set name = name where id = ? but have it run through an entire set of these? Is there any way of automating that rather than having to update it manually? Do i need another table with just the id numbers and the column I want to change? or do i need a txt file?

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Apr 18, 2008

building some kind of ecommerce site.
I want to allow the user to modify the image that he has stored for a product.
The image is stored in a directory, in the table GAMME I only have the image name.
When the user selects a new Image, I first delete the old image in the directory, then save the new image, but what I can't do is to update the table with the new image name, when I write sqldatasource1.update() I have an error "the dictionnary passed with old values is empty"(translated from frengh).
the update statement in sqldatasource1 is: " UPDATE Gamme SET imagename = @imagename, imagesize = @imagesize WHERE (product_ID = @original_product_ID)"
 
on events sqldatasource1.updating I have written:
e.Command.Parameters("@imagename").Value = (FileUpload1.FileName).ToString()
e.Command.Parameters("@taillevignette").Value = FileUpload1.PostedFile.ContentLength
e.Command.Parameters("@original_product_ID").Value = Session("Product_ID").ToString         
 this is not written but the session("product_ID") is the good value
the problem must come from the last lign, but I don't Understand the problem and how to solve it.
 
 

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Need Help For Updating Values

May 14, 2008

Hi!

I am trying to retrieve and update data. I am retrieving the data into the respective controls such as textboxes. The codes are follow:

Retrieve data - working

Dim sqlConn As New SqlConnection()
sqlConn.ConnectionString = ConfigurationManager.ConnectionStrings("ScheduleConnectionString").ToString()

Dim com As SqlCommand = New SqlCommand("SELECT * FROM Demo_Theatre_DB WHERE ID=" & "@ID", sqlConn)

Dim paramID As New SqlParameter("@ID", SqlDbType.Int)

paramID.Direction = ParameterDirection.Input

com.Parameters.Add(paramID)
paramID.Value = e.Value
sqlConn.Open()
Dim reader As SqlDataReader = com.ExecuteReader()
While reader.Read()
StartTimeTextBox.Text = reader("StartTime")
EndTimeTextBox.Text = reader("EndTime")
CompanyNameTextBox.Text = reader("CompanyName")
PurposeTextBox.Text = reader("Purpose")
AccountManagerTextBox.Text = reader("AccountManager")
PresenterTextBox.Text = reader("Presenter")
ColorDDL.SelectedValue = reader("ColorCode")
StatusRadioButtonList.SelectedValue = reader("Status")
CommentTextBox.Text = reader("Comments")
End While


update the data - NOT WORKING


Dim sqlConn As New SqlConnection()
sqlConn.ConnectionString = ConfigurationManager.ConnectionStrings("ScheduleConnectionString").ToString()

Dim cmd As SqlCommand = New SqlCommand("UPDATE Demo_Theatre_DB SET StartTime = @StartTime, EndTime = @EndTime, CompanyName = @CompanyName, Purpose = @Purpose, AccountManager = @AccountManager, Presenter = @Presenter, ColorCode = @ColorCode, Status = @Status, Comments = @Comments WHERE ID=@ID")

cmd.Parameters.AddWithValue("StartTime", StartTimeTextBox.Text)
cmd.Parameters.AddWithValue("EndTime", EndTimeTextBox.Text)
cmd.Parameters.AddWithValue("CompanyName", CompanyNameTextBox.Text)
cmd.Parameters.AddWithValue("Purpose", PurposeTextBox.Text)
cmd.Parameters.AddWithValue("AccountManager", AccountManagerTextBox.Text)
cmd.Parameters.AddWithValue("Presenter", PresenterTextBox.Text)
cmd.Parameters.AddWithValue("ColorCode", ColorDDL.SelectedValue)
cmd.Parameters.AddWithValue("Status", StatusRadioButtonList.SelectedValue)
cmd.Parameters.AddWithValue("Comments", CommentTextBox.Text)

Try
sqlConn.Open()
cmd.ExecuteScalar()

Catch ex As Exception
InsertMsgLabel.Text = ex.ToString
End Try
End Sub


I am getting the following error whenever I click update button.
"ExecuteScalar: Connection property has not been initialized"

Your help will be appriciated!

Thanks!

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May 16, 2008

 HelloI have a problem when I want to update my textbox, I have a textbox called Textbox1, when I Insert data from it to database it is working well, even when I Update it WITHOUT SELECT field from database it is working well again,but when I Select [pagename] from database then want to Update it it is not working, nothing happend and in debuging the textbox doesnt have any value. what shoud i do? the value become null?    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load        Label1.Text = Request("Id").ToString()        Dim conname As String = ConfigurationManager.ConnectionStrings("IPbrandConnectionString").ConnectionString()        Dim con As New SqlConnection(conname)        Dim sql As String = "SELECT [Id], [pagename] FROM [content] WHERE ([Id] = @Id)"        Dim cmd As New SqlCommand(sql, con)        cmd.Parameters.Add(New SqlParameter("@Id", SqlDbType.Int, 32))        cmd.Parameters("@Id").Value = Label1.Text.ToString()        con.Open()        Dim reader As SqlDataReader = cmd.ExecuteReader()        Do While reader.Read()            TextBox1.Text = reader("pagename")           Loop        reader.Close()        con.Close()    End Sub  Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click        Dim conname1 As String = ConfigurationManager.ConnectionStrings("IPbrandConnectionString").ConnectionString()        Dim con1 As New SqlConnection(conname1)        Dim sql1 As String = "UPDATE [content] SET [pagename] = @pagename WHERE [Id] = @Id "        Dim cmd1 As New SqlCommand(sql1, con1)        cmd1.Parameters.Add(New SqlParameter("@Id", SqlDbType.Int, 32))        cmd1.Parameters("@Id").Value = Label1.Text.ToString()        cmd1.Parameters.Add(New SqlParameter("@pagename", SqlDbType.VarChar, 50))        cmd1.Parameters("@pagename").Value = TextBox1.Text.ToString()        cmd1.UpdatedRowSource = UpdateRowSource.OutputParameters        Try            con1.Open()            cmd1.ExecuteNonQuery()        Catch err As SqlException            Throw New ApplicationException("Data error.")        Finally            con1.Close()        End Try        Server.Transfer("main.aspx")

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