Update 2 Tables At Once

Jul 18, 2007

Hi,

I have 2 database tables with column "city". When I update one of these two I want to be updated all the records in the other table. For example:
In table "a", column "city" contains the record "NY"; in table "b", column "city" also contains the record "NY" several times. When I change "NY" to "New York" in table "a" I want that also in table to be changed all the records. The condition is not to use foreign key, but just the text of the records.
Any help would be appreciated,thanks.

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Trigger To Update One Record On Update Of All The Tables Of Database

Jan 3, 2005

hi!

I have a big problem. If anyone can help.

I want to retrieve the last update time of database. Whenever any update or delete or insert happend to my database i want to store and retrieve that time.

I know one way is that i have to make a table that will store the datetime field and system trigger / trigger that can update this field record whenever any update insert or deletion occur in database.

But i don't know exactly how to do the coding for this?

Is there any other way to do this?

can DBCC help to retrieve this info?

Please advise me how to do this.

Thanks in advance.

Vaibhav

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Jul 25, 2006

This is my curren code for updaing ESN number. But this is incorrect.
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How Can I Update Relationship Tables?

May 14, 2007

<----------I
have 2 tables are: 'customers (parent)' and 'open_ac (child)'

<--------I
have tried to insert and update data into sql database by using textboxes
(don't use datagrid)

<--------My
tables details are below
 

<-------this
table uses for keeping user data 

customers
fields:  

Column
name          
        type  
        length     
                 
             Description

cu_id  
               
             int  
             4  
         Primary key     
      Identifiers

cu_fname
                
    nvarchar   
       20        
  allow null          
     first name       
                 
     

cu_lname
                 
   nvarchar         
40            allow null 
              last name

cu_nat
                
        nvarchar      
  
20            allow
null               
nationality

cu_add  
               
      nvarchar      
  
40            allow null             
  address

cu_wplace
            
      nvarchar      
  
40            allow
null          
     workplace

cu_tel
             
           nvarchar   
      10
           allow
null               
telephone

cu_fax
             
          nvarchar   
      10
           allow null          
         fax

cu_email
             
       nvarchar        
10            allow
null             
     email

 <----the
open_ac uses for keeping register date/time of customers

open_ac
fields:  

Column
name           type  
        length           
Description

cu_id  
               
    int           
     4           
      link key

op_date  
            date/time          
8                
register date

 

<----------my
code 

Imports
System.Data.SqlClient

Public Class cus_reg
    Inherits System.Web.UI.Page
    Dim DS As DataSet
    Dim iRec As Integer   'Current Record
    Dim m_Error As String = ""

    Public Property MyError() As String
        Get
            Return
m_Error
        End Get
        Set(ByVal Value As String)
            m_Error =
Value
            If
Trim(Value) = "" Then
               
Label3.Visible = False
            Else
               
Label3.Text = Value
               
Label3.Visible = True
            End If
        End Set
    End Property

    Private Sub Page_Load(ByVal sender As System.Object,
ByVal e As System.EventArgs) Handles MyBase.Load
        If Not Page.IsPostBack Then
            Dim C1 As
New MISSQL
            'DS =
C1.GetDataset("select * from customers;select * from open_ac;select * from
accounts")
            DS =
C1.GetDataset("select * from customers;select * from open_ac")
           

   
        Session("data") = DS
            iRec = 0
           
Viewstate("iRec") = iRec
           
Me.MyDataBind()

            Dim Dtr As
DataRow = DS.Tables(0).NewRow
           
DS.Tables(0).Rows.Add(Dtr)
            iRec =
DS.Tables(0).Rows.Count - 1
           
viewstate("iRec") = iRec
           
Me.Label2.Text = DateTime.Now
           
Me.MyDataBind()
        Else
            DS =
Session("data")
            iRec =
ViewState("iRec")
        End If
        Me.MyError = ""
    End Sub


    Public Function BindField(ByVal FieldName As String) As
String
        Dim DT As DataTable = DS.Tables(0)
        Return DT.Rows(iRec)(FieldName)
& ""
    End Function
    Public Sub MyDataBind()
        Label1.Text = "Record : "
& iRec + 1 & " of " & DS.Tables(0).Rows.Count
        txtcu_id.DataBind()
        txtcu_fname.DataBind()
        txtcu_lname.DataBind()
        txtcu_add.DataBind()
        txtcu_occ.DataBind()
        txtcu_wplace.DataBind()
        txtcu_nat.DataBind()
        txtcu_tel.DataBind()
        txtcu_fax.DataBind()
        txtcu_email.DataBind()  
    End Sub
   

Here is
update code


    Private Sub bUpdate_Click(ByVal sender As System.Object,
ByVal e As System.EventArgs) Handles bUpdate.Click
        Dim DT As DataTable = DS.Tables(0)
        Dim DR As DataRow = DT.Rows(iRec)
        'Dim DR1 As DataRow = DT1.Rows(iRec)

        If DR.RowState = DataRowState.Added
Then
            If
txtcu_id.Text.Trim = "" Then
               
Me.MyError = "please enter your  id"
               
Exit Sub
            End If
            DR("cu_id")
= txtcu_id.Text
        End If

        If txtcu_fname.Text.Trim =
"" Then
            Me.MyError =
"please enter your name"
            Exit Sub
        Else
           
DR("cu_fname") = txtcu_fname.Text
        End If

        If txtcu_lname.Text.Trim =
"" Then
            Me.MyError =
"please enter your last name"
            Exit Sub
        Else
           
DR("cu_lname") = txtcu_lname.Text
        End If

        If txtcu_add.Text.Trim =
"" Then
            Me.MyError =
"please enter your address"
            Exit Sub
        Else
           
DR("cu_add") = txtcu_add.Text
        End If

        If txtcu_occ.Text.Trim =
"" Then
            Me.MyError =
"please enter your occupation"
            Exit Sub
        Else
           
DR("cu_occ") = txtcu_occ.Text
        End If

        If txtcu_wplace.Text.Trim =
"" Then
            Me.MyError =
"please enter your workplace"
            Exit Sub
        Else
           
DR("cu_wplace") = txtcu_wplace.Text
        End If

        If txtcu_nat.Text.Trim =
"" Then
            Me.MyError =
"Please enter your nationality"
            Exit Sub
        Else
           
DR("cu_nat") = txtcu_nat.Text
        End If

        If txtcu_tel.Text.Trim =
"" Then
           
DR("cu_tel") = DBNull.Value
        Else
           
DR("cu_tel") = txtcu_tel.Text
        End If

        If txtcu_tel.Text.Trim =
"" Then
           
DR("cu_fax") = DBNull.Value
        Else
           
DR("cu_fax") = txtcu_fax.Text
        End If

        If txtcu_email.Text.Trim =
"" Then
           
DR("cu_email") = DBNull.Value
        Else
           
DR("cu_email") = txtcu_email.Text
        End If
        
        Dim Strsql As String
        If DR.RowState = DataRowState.Added
Then
            Strsql =
"insert into customers (cu_id,cu_fname,cu_lname,cu_add,cu_occ,cu_wplace,cu_nat,cu_tel,cu_fax,cu_email)
values (@P1,@P2,@P3,@P4,@P5,@P6,@P7,@P8,@P9,@P10)"
        Else
            Strsql =
"update customers set
cu_fname=@P2,cu_lname=@P3,cu_add=@P4,cu_occ=@P5,cu_wplace=@P6,cu_nat=@P7,cu_tel=@P8,cu_fax=@P9,cu_email=@P10
where cu_id =@P1"
        End If
        Dim C1 As New MISSQL
        Dim cmd As SqlCommand =
C1.CreateCommand(Strsql)
        C1.CreateParam(cmd,
"ITTTTTTTTT")
       
cmd.Parameters("@P1").Value = DR("cu_id")
        cmd.Parameters("@P2").Value
= DR("cu_fname")
       
cmd.Parameters("@P3").Value = DR("cu_lname")
       
cmd.Parameters("@P4").Value = DR("cu_add")
       
cmd.Parameters("@P5").Value = DR("cu_occ")
       
cmd.Parameters("@P6").Value = DR("cu_wplace")
        cmd.Parameters("@P7").Value
= DR("cu_nat")
       
cmd.Parameters("@P8").Value = DR("cu_tel")
       
cmd.Parameters("@P9").Value = DR("cu_fax")
       
cmd.Parameters("@P10").Value = DR("cu_email")
      

        Dim Y As Integer = C1.Execute(cmd)
        If Y > 0 Then
           
DR.AcceptChanges()
        Else
            Me.MyError =
"Can not register"
        End If
<---------code above in this sub it can update only customers tables and when I tried to coding below<------------it alerts can not update 
        Dim DT1 As DataTable = DS.Tables(1)
        Dim DR1 As DataRow = DT1.Rows(iRec)
        If DR1.RowState = DataRowState.Added
Then
            If
txtcu_id.Text.Trim = "" Then
               
Me.MyError = "Please enter id"
               
Exit Sub
            End If
            DR1("cu_id")
= txtcu_id.Text
        End If
        If Label2.Text.Trim = ""
Then
           
DR1("op_date") = Label2.Text
        End If

        Dim StrSql1 As String
        If DR1.RowState =
DataRowState.Deleted Then
            StrSql1 =
"insert into open_ac (cu_id,op_date) values (@P13,@P14)"
        Else
            StrSql1 =
"update open_ac set op_date=@P14 where cu_id=@P13"
        End If
        Dim C2 As New MISSQL
        Dim cmd2 As SqlCommand =
C2.CreateCommand(StrSql1)
        C2.CreateParam(cmd2, "ID")
       
cmd2.Parameters("@P1").Value = DR1("cu_id")
       
cmd2.Parameters("@P2").Value = DR1("op_date")

        Dim Y1 As Integer = C2.Execute(cmd2)
        If Y1 > 0 Then
           
DR1.AcceptChanges()
        Else
            Me.MyError =
"Can not register"
        End If
    End Sub
End Class 

<------this
is class  I  use for connecting to database and call parameters....

MISSQL
class

Imports
System.Data.SqlClient
Public Class MISSQL
    Dim PV As String =
"Server=web_proj;uid=sa;pwd=sqldb;"
    Dim m_Database As String = "c1_itc"
    Public Strcon As String
    Public Sub New()
        Strcon = PV &
"database=" & m_Database
    End Sub
    Public Sub New(ByVal DBName As String)
        m_Database = DBName
        Strcon = PV &
"database=" & m_Database
    End Sub
    Public Property Database() As String
        Get
            Return
m_Database
        End Get
        Set(ByVal Value As String)
            m_Database =
Value
            Strcon = PV
& "database=" & m_Database
        End Set
    End Property

    Public Function GetDataset(ByVal Strsql As String, _
        Optional ByVal DatasetName As String
= "Dataset1", _
        Optional ByVal TableName As String =
"Table") As DataSet
        Dim DA As New SqlDataAdapter(Strsql,
Strcon)
        Dim DS As New DataSet(DatasetName)
        Try
            DA.Fill(DS,
TableName)
        Catch x1 As Exception
           
Err.Raise(60002, , x1.Message)
        End Try
        Return DS
    End Function

    Public Function GetDataTable(ByVal Strsql As String, _
         Optional ByVal TableName As
String = "Table") As DataTable
        Dim DA As New SqlDataAdapter(Strsql,
Strcon)
        Dim DT As New DataTable(TableName)
        Try
            DA.Fill(DT)
        Catch x1 As Exception
           
Err.Raise(60002, , x1.Message)
        End Try
        Return DT
    End Function

    Public Function CreateCommand(ByVal Strsql As String) As
SqlCommand
        Dim cmd As New SqlCommand(Strsql)
        Return cmd
    End Function

    Public Function Execute(ByVal Strsql As String) As
Integer
        Dim cmd As New SqlCommand(Strsql)
        Dim X As Integer = Me.Execute(cmd)
        Return X
    End Function

    Public Function Execute(ByRef Cmd As SqlCommand) As
Integer
        Dim Cn As New SqlConnection(Strcon)
        Cmd.Connection = Cn
        Dim X As Integer
        Try
            Cn.Open()
            X =
Cmd.ExecuteNonQuery()
        Catch
            X = -1
        Finally
            Cn.Close()
        End Try
        Return X
    End Function

    Public Sub CreateParam(ByRef Cmd As SqlCommand, ByVal
StrType As String)
        'T:Text, M:Memo, Y:Currency,
D:Datetime, I:Integer, S:Single, B:Boolean, P: Picture
        Dim i As Integer
        Dim j As String
        For i = 1 To Len(StrType)
            j =
UCase(Mid(StrType, i, 1))
            Dim P1 As
New SqlParameter
           
P1.ParameterName = "@P" & i
            Select Case
j
               
Case "T"
                   
P1.SqlDbType = SqlDbType.NVarChar
               
Case "M"
                   
P1.SqlDbType = SqlDbType.Text
               
Case "Y"
                   
P1.SqlDbType = SqlDbType.Money
               
Case "D"
                   
P1.SqlDbType = SqlDbType.DateTime
               
Case "I"
                   
P1.SqlDbType = SqlDbType.Int
               
Case "S"
                   
P1.SqlDbType = SqlDbType.Decimal
               
Case "B"
                   
P1.SqlDbType = SqlDbType.Bit
               
Case "P"
                   
P1.SqlDbType = SqlDbType.Image
            End Select
           
Cmd.Parameters.Add(P1)
        Next
    End Sub
End Class
               
           
       

<-------Thank you in advance<-------and Thank you very much for all help

   
 

 

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This is my curren code for updaing ESN number. But this is incorrect.

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I am trying to loop through these tables to Update the info in Table 1's description to match the correct description in Table 2.

Their are 1417 items in Table 2 and 77000 items in table 1.

There are NO errors when executing, just no update

Here is my code so far:

Code:
Update Qualification SET [Description] = B.Description FROM Qualification A INNER JOIN OFO_code B ON A.OFO_CODE = B.OFO_CODE WHERE A.OFO_Code IN ('" & OFO & "' )"

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