Delete Records From The Database If They Are At-least 3 Years Old?
Dec 19, 2011
I have a project that I am working on that requires me to delete records from the database if they are atleast 3 years old.I have something like this in DB2 SQL to get the date:
SELECT * FROM tableA
WHERE ADD_DATE < CHAR(CURRENT DATE-3 YEARS)
ADD_DATE is stored as Characters in my system, this is why I am converting I know it is also possible to get the date and format it in VB.net which is the language I am using to call the SQL statements.My question is whether it would be faster/better to get the date and perform the conversion inside the SELECT in SQL or would it be better to get the current date and convert it in VB.net and then use that date in the SQL statement. I'm thinking VB.net would be better because there are thousands of records that must be compared. I should be able to set it up in VB so that it only retrieves the date and converts it once but I am not sure what kind of performance hit each takes from these statements.
View 2 Replies
ADVERTISEMENT
Oct 27, 2009
how to get records into oracle database delete from db & update the records i have successfully connected my vb 2008 win form with oracle 10g.
View 1 Replies
Nov 19, 2009
Ive created a form to add/delete/update records in a database ,but when i try and open the frm i get a NullReferenceExceptionUnhandled error, below is my code, i cannot for the life of me see where i've gone wrong, but maybe someone else can spot it?[code]
View 2 Replies
Feb 17, 2008
I'm creating an application that adds and deletes records from a microsoft access database. The language I'm using is VB2008. I am importing the database through a wizard. I can add records and delete records, but I cannot delete a newly added record without closing the form first. When i reopen the form, I can delete the record. Here is how I have my database setup:
'Bind user info to the controls.
AUSERDataSet = New BulldogUsersDataSet
AUSERTableAdapter = New BulldogUsersDataSetTableAdapters.UsersTableAdapter
AUSERTableAdapter.Fill(AUSERDataSet.Users)
' Setup the binding source.
AUSERBindingSource = New BindingSource
View 5 Replies
Dec 21, 2009
how to do it, but the tutorial is not applicable on the program that I wish to do. The tutorial tells you to add 4 navigation buttons so that you can navigate the database(first, last, back, and forward). Then an update and delete button. But if this is what I will do, it would take 10 years to navigate the database and update a record. Now, what I want to do is just for the user to input a unique ID and click search button(which I have already done). Then the update would be easier. How can I update or delete a record using this method?
View 1 Replies
Mar 17, 2009
how can I delete a records in access dataabse except for sql query my code is this I would like to know if this code is wrong or not
Private Sub BindingNavigatorDeleteItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BindingNavigatorDeleteItem.Click
[Code]...
View 4 Replies
Dec 14, 2010
1- How to delete & update any record in the DataBase in vb.net?
2- How to make search & advance search about any record in the DataBase in vb.net by date,ID ........etc?
View 1 Replies
Jun 6, 2011
how to use datagridview and why and when we use adaptor and data reader
View 1 Replies
Mar 8, 2012
I am trying to Insert/Delete records in a MSSQL database based on if a checkbox is checked or unchecked. The checkbox is an item template in a datagrid, I can check/uncheck the checkbox but it doesn't do an insert or delete. Here is my code:
[Code].....
But then I get the error that the control chkmap has not been declared. I am confused as to how this needs to be declared, do I set a variable to the FindControl("chkmap") and then set it as variable.checked = true ?
View 7 Replies
Mar 6, 2011
First one is how to update database records without using me.validate[code]...
View 4 Replies
Jan 8, 2010
I have problems with the updating and deleting of records in database. I'm using ObjectDataSource and the GridView to display the results in the database. Below is the codes for the update and delete (in the DAL (data access layer). BTW, I'm doing 3 tier architecture in VB.
'update the records accordingly in the database.
Public Function UpdateBooks(ByVal title As String, ByVal borrowDate As String, ByVal dueDate As String, ByVal NameBorrower As String, ByVal book_id As Integer) As Integer
Dim connectionString As String = My.Settings.dbConnection
[Code] .....
I don't know why, but every time I try to update (by clicking on the update button), every thing is not updated, the page would refresh then the records still remain the same in the GridView. As for delete, when I clicked on the 'delete' button, the record is not deleted, it still remains there.
These are the codes in the (BLL (business logic layer)):
Public Function getUpdateBooks(ByVal title As String, ByVal borrowDate As String, ByVal dueDate As String, ByVal NameBorrower As String, ByVal book_id As Integer) As Integer
Dim ds As Integer = UserDA.UpdateBooks(title, borrowDate, dueDate, NameBorrower, book_id)
Return ds
[Code] .....
View 5 Replies
Jun 23, 2010
I display my records using datagridview...I have also Save button which is intended to update any changes I make via the datagridview.I got this error whenever I type something in the address column "Update requires a valid UpdateCommand when passed DataRow collection with modified rows."[code]What code do I put so that whenever I highlight a row and click delete button or press delete key selected records will be deleted from datagridview as well as my database will be updated from any deletion?
View 8 Replies
Nov 3, 2008
How do I insert,update,and delete records in vb.net 2008 from a Access 2007 database?Really, I figured out how to add records - but I cannot delete or update records. Any pointers, website tutorials, etc?Also, I am binding the database table to Listbox which is working, but I need to update the listbox with deletion and update changes too...
View 3 Replies
Mar 10, 2012
I have used this form to add new records on my database(ms access) in my database I have a column name 'ID' which is my primary key 'ID' is set as auto number. Now I am having a trouble on creating my update and delete button it's always saying "cannot be delete/update"
Here's my code on add, update and delete
Public Sub SaveRecord()
Try
Dim dbConn As OleDbConnection
Dim dbInsert As New OleDbCommand
Dim str1, str2, str3, str4, str5, str6, str7, str8, str9 As String
[Code] .....
Note my add is working perfectly fine. I just can find the error on my delete and update. Also I have used this to view it to my datagrid I don't know if its the right thing but it's working fine too.
'declared dbpath globally'
Dim dbPath As String = "Provider=Microsoft.Jet.Oledb.4.0; Data Source=../VG.mdb;Persist Security Info=False"
[Code] .....
Another thing is how to code each textbox and combobox to bind it to my records so that when I click on the datagridview each column will be distributed on each respective textbox.
View 1 Replies
May 12, 2010
how can i access the sql server express database table in vb.net on forms to insert records,delete records,search records,edit records.I have made table by using visual studio.
View 5 Replies
Mar 13, 2011
I need to be able to save, edit, and delete records in an access database through vb2008. Editing and deleting records works perfect, but I cannot save new records. Can anyone assist?
Here is my code
Imports System.Data.OleDb
Public Class Main_Form
Dim con As OleDbConnection
Dim cmd As OleDbCommand
[code].....
View 8 Replies
Apr 24, 2010
i have a simple application which can create/update/delete/search records using Access database. If i add a record, save it, then close the application and run it again and search for that record, it appears. However, when i write some code to my application, nothing to do with the search function, and i run the application the record is not found. For example i added a button to clear the textfields, and when i ran the application the records i have added earlier were not found.
View 1 Replies
Jan 5, 2010
I'm trying to use a DataGridView Control to Add/Edit/Delete records in a simple database
table.I used the wizard to create the datagridview and it created a dataset a bindingsource
and a tableadaptor.When i run my project, data that is in the database table is displayed
correctly, but I can't add/edit/delete. What events/actions do I need to perform to add
these capabilities?
View 2 Replies
Apr 20, 2011
Suppose $800 is deposited into a savings account earning 4% interest compounded annually, and $100 is added to the account at the end of each year. Calculate the amount of money in the account at the end of 10 years. Determine a formula for computing the balance at the end of one year based on the balance at the beginning of the year.Allow the user to input the beginning balance and the amount to be contributed at the end of each year. You must a loop in this program. [code] I cannot figure out how to make the previous years balance become the next years and so forth.
View 6 Replies
Mar 16, 2011
I'm trying to delete a number of records in a table from the last and forward. My idea is to use sql like this: delete top " & variable & " * from table where ID = something It gives me a general sytax error. Is it at all possible? Fuga. Edit: I also have the order by statement there. I just forgot to put it in the question.
View 5 Replies
Jan 28, 2012
Suppose you have three file of a database with information for three years (imported information of one year to database and has saved as a new file). How we can merge this three file and create one database for all years with visual basic 2010?
Note:
1-Each database has three tables and there is relationship between them
2- The ID number in tables is Auto number
3- Fields in all tables for all files are completely the same
View 2 Replies
Nov 29, 2010
I want to know how to Update / delete the table records in ASPNETDB.MDF in single update / delete query ?
View 1 Replies
May 17, 2006
I can retrieve records from my Database fine, but I'm having trouble updating records. I am getting a syntax error on [code] I get this error when I change the Last Name (Row 0, Column 1). [code]
View 4 Replies
Jun 14, 2012
The following code deletes the records from the table on run time but not actually from the MS Access database. I have deleted all the records and when I restart the application, all records are exist.
How to solve the problem?
[Code]...
View 3 Replies
May 14, 2012
imports System.Data.SqlClient
Public Class Form3 Inherits System.Windows.Forms.Form
Dim myConnection As SqlConnection
Dim myCommand As SqlCommand
Dim ra as Integer
[Code] .....
Attached File(s)
deleting.txt (793bytes)
Number of downloads: 9
View 3 Replies
Nov 30, 2010
Is it possible to delete all records from a bindingsource without using a loop? My binding source is a dataset table
View 3 Replies
Aug 22, 2011
I use this code to get row id from dgv to delete that row after that
Me.
TextBox1.Text = DataGridView1.Rows(e.RowIndex).Cells("id").Value
Now how can I amend this code to use it to get sevral rows ids in case that I want to delete more than one row ?
View 6 Replies
Jun 21, 2010
how to delete a record from datagrid, i tried the following code but it gave me an error in deleting records, I am using Mysql Database.
Following is the code:
Private Sub Button6_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button6.Click
'recorddelete()
Dim sql As String
Dim db As New DBHelper
[code]....
I think problem is in this line, may be syntax problem:
sql = "delete from budget_details where ID = & DataGridView1.CurrentRow.Cells(0).Value.ToString()& "
View 15 Replies
Mar 6, 2009
I try to delete all record in a table (.mdb msaccess) and I have the next code:
Me.Validate()
Me.Db1DataSet.Tables("tabl").Clear()
Me.TablAdapter.Update(Me.Db1DataSet.Tables("tabl"))
Me.Db1DataSet.AcceptChanges()...
But this don't change my table...
View 5 Replies
Aug 8, 2011
I am using the code below to delete reocrds , but when i restart the program they reappear.How do i commit the deleted records.[code]
View 3 Replies
