I need to update a column by adding a value in Access:
update table1 set column1 = column1+value
In the above, if column1 is null, then the table is not updated.
I need a function like in SQL Server:
update table1 set column1 = isnull(column1,0) + value
I have program in VB.NET 2008 where I want to update the premamt cell value in the tblPrem Access table, where the premno is the maximum (autogenerated as 1,2,3...), but only within a specified set of common numbers in a column (contno) I am currently saving. This contno is from another table (tblMain) linked in this table (tblPrem) where it is the primary key, and just repeatedly generated after the clicking save button. Here is my current code which saves the data but does not do anything on the textbox1 + textbox2, and has an error message "At most one record can be returned by this subquery":
sqlQrySave = "UPDATE tblPrem SET premamt = " & textbox1 & " + " & textbox2 & " WHERE premno=(SELECT MAX(premno) FROM tblPrem GROUP BY contno);"
What I expect to happen is like this:
contno | premno | premamt
1................1.............45
1................2.............45
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I am creating a program in vb.net and I am wanting to update a column of my Access Datbase on a button click.
my column I want to update is called S_Card.
For some reason every time I execute the code, it gives me the error "No value given for one or more required parameters" and it points to the ExecuteNonQuery. Below is the relevant code I have.
Public Function sqlUpdate(ByVal varBalance As Double, ByVal varWithdrawlAmount As Double) As Double Dim dbCon As New OleDb.OleDbConnection dbCon.ConnectionString = "PROVIDER=Microsoft.Jet.OLEDB.4.0;Data Source = dbATM.mdb" Dim query As String Dim cmdUpdate As New OleDb.OleDbCommand dbCon.Open() varBalance = varBalance -
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I am using a query in vb.net, database is Access. I need alias of query like sql but the query return me column alias and also ' '
SELECT COLUMN1 AS 'FIRST NAME'
I expect the result to be a field called FIRST NAME but it returns the string "FIRST NAME". Is there is any way if return me the field FIRST NAME instead of "FIRST NAME".
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MsgBox(cmd) End If End While '***** END ***** reader.Close() con.Close() MsgBox("The Connection to the Database is now Closed") End Sub End Class
I not able to update query in MSAccess having 3 images. Also, its not showing any error.
Awaiting ur reply.
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I'm working on an access database and there is a problem I can solve in a circumvented way but I was wondering if it can be done by using a function in query.The case: I have a main data table and 2 other tables joined to it.
maintable
country | city...... | postalcode [code].....
From one of the tables I select the respective zone for the postal codes in the main datatable, ie. if the row's postal code column contains 1000 (just an exmple) then the postal code is searched in the "zone" table "from" & "to" columns using "between", and it results in for example "zone1" (zone column). This is a clear thing, it works okay.However I need to select the respective rate column (based on the rows' weight column) from the rates table selecting the appropriate zone.
I can solve this by a switch statment (select country, city.... switch( zone="1", [1], zone="2", [2] etc.) but it gets very tedious when for example I have a rate table with 15 columns, you can imagine that.My question is if I could create a custom function which returned the respective column based on the result of the zone column.is there some way to get the function's return value to be translated in the select statement? for example select country, city....getzone("rates",[zone]) .....
I know that the rates table do not follow the relational database's main principle and it should look like fromkg | tokg | zone | rate and it would work like a charm with "where"but these tables are changed regularly and I receive them in excel...but maybe transforming the tables each time by unions would easily solve my problem doesnt it?I'm still interested if VBA custom function could be used for such a purpose.
I have a query which is pulling values from a table in MS Access
SELECT
tblInstructor.InstructorID,
tblInstructor.Football AS InstructorRole,
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i have to update the values in my database some of them are integer, some string and some date (as you can infer from the formatting)
i am using the following query:
UPDATE PatientProfile SET HospitalRegNo=" + hregno + ", PatientName='" + pname + "', PatientAge=" + page + ", PatientSex='" + psex + "', Address='" + add + "', ContactNo='" + cno + "', AdmitDate=#" + adat + "#, OperDate=#" + odat + "#, DischargeDate=#" + ddat + "# WHERE PatientNo=" + pno + ""
but its not working... i think there's a problem in formatting the date type variables
this is the code
Dim con As New OleDb.OleDbConnection
Dim com2 As New OleDbCommand
Dim constring As String = ConfigurationManager.ConnectionStrings("esourcecon").ConnectionString
con = New OleDbConnection(constring)
com2 = New OleDbCommand("UPDATE Customer SET CName = @CName, CAdd= @CAdd, CTel= @CTel, Cmob= @CMob WHERE CName='" & C1.Text & "' ", con)
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id is an autonumber field and if i change the where string to another column then also i dont get any error and the values are still not entered
i have this code that should update my data base but i kep gething an error saying: its not possible so change or delete the regists Because the table 'MembrosCompasso' has relating records
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I have an access database with several tables. in one of the tables there are three columns named quantity, price and total cost.total cost is an expression of (quantity * price). the expression looks grate in the datagrid etc but when I need to save it to the database
View 1 RepliesI have a Microsoft Access database that I connect to with the Jet Database Engine, using VB.NET. I want to programmatically get all of the column names for a particular table [code]...
Is this possible in Access? If not, what are my options for getting the column names?
HOW TO update and query and erase in database on visual studio using officce access
View 3 RepliesHow to use this query to update record [code]....
View 1 RepliesI reproduced the following code to update a database and I get the error" Operation must use a updateable query"
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[code]The query executes fine but the problem is that when this query executes, it doesn't update the percentage field. What might be the problem?
View 2 RepliesI am connecting to an Access database and using a parameter query with the LIKE operator to return all rows that match query. The string to search for is taken from a Textbox
sql =
"Select * FROM Allview WHERE Info Like" &
"*" &
CStr(TextBox1.Text) &
"*"
The query does not return any data in vb, but when run from access with same string, there is data returned.The connection to the database is done correctly, as I am able to return data with various other queries.
Partial code :
Dim
con As
New OleDb.OleDbConnection[code]....
I am trying to run a query an Access db from VB. The general query which I want to run is
SELECT * FROM Patient WHERE Patient.PatientID = ?
or SELECT * FROM Patient WHERE Patient.PatientLname = ?
I tried using an input box which captured the user input and pass that variable to the query, but that failed. Then I read about writing a function and using that, however, I keep getting an error which says Function not defined, but when stepping through the code, it seems to work. Here is my function: [Code]
I'm using the following update method.. I'd like to be able to update the value of a checkbox into the existing query if possible. how to do this the correct way?
Public Shared Function SaveMemo() As String
Dim sConnectionString As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:Documents and Settingsdiw07My DocumentsDaily Backupsphone memo backend.mdb"
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VB GridView control will not allow code in the vb code file to access a data column that has its visible property set to false. When it is set to true, the data column can be accessed with no problem. Any suggestions as to how to correct this? I have looked through the documentation, text books, and I have not found anything that gave me any clue as to what the problem could be. I thought that the property was just applied to the column, not that it would remove the column from being accessible.
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update statement, i am trying to update a row within a access 2007 database here is my code.
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I want to know how to Update / delete the table records in ASPNETDB.MDF in single update / delete query ?
View 1 RepliesWhat is wrong with this code. It does not update the access database and no error.
Dim conn As New OleDbConnection
Dim sqlQRY As String = "SELECT * FROM StdMaster WHERE StuNo = " & txtStudentNo.Text & " ORDER BY StuNo"
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I wanted to update a column in my table, i have written the code it runs fine without any error also it displays the confirmation dialog box but the table is not updated whats wrong with the code.
Dim sqlConn As New SqlClient.SqlConnection
sqlConn.ConnectionString = "Data Source=.SQLEXPRESS;AttachDbFilename=|DataDirectory|housingsociety.mdf;Integrated Security=True;Connect Timeout=30;User Instance=True"
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I'm having a small issue, but somehow I simply don't see it.I'm trying to get a value from my database according my query:
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I'm creating a form application using vb. I'm still new to this and I'm teaching myself via the internet so please don't be too mean. I wrote my code using queries that I created in visual studio. I don't quite remember how to create an update query and write the code to update different datagrids. I tried searching the forums, and I can't find anything that fits into the way I wrote my code. I have an update button that I want to use to save all the edited data in the form. Here's my code so far:
Public Class Form1
Private Sub Blsys_systemsBindingNavigatorSaveItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
Me.Validate()
Me.Blsys_systemsBindingSource.EndEdit()
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I am having a bit of a problem with a query and I have google around and I still haven't find out a solution.I have an update query, but when it is executed I get a Syntax error in UPDATE statement.
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i have a query that when i updating my database it doesnot take *,&,-,#,@ all these,but when add a new database its taking all above i have fields of roll#,Sname,Age and address?
View 1 Replies