Search DB

Was wondering if someone can help me with the following question? I want to search a DB and find the highest value in the DB in a particular column (the column is simply called High) for the last 14 days (DB gets automatically updated with new data every day, except weekends) and then want that value displayed in a messagebox
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citadellondonAuthor Commented:
Any assitance is greatly appreciated
citadellondonAuthor Commented:
Oh need to search from within a VB .NET application
What DBMS are you using..?  Here's the MS SQL Server (TransactSQL) answer...You should be able to adapt to whatever standard you are using:

Select Max(High)
  From MyTable
 Where DateField >= DateAdd(Day, -14, GetDate())

Replace "MyTable" with your table name and replace "DateField" with the name of your field containing the date.

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Sorry just realised...Do you need all the ADO code as well so you can execute that SQL statement from your code or do you know how to do that..?
citadellondonAuthor Commented:
if you could kindly provide the ado code that would be great

P.s I am using an Access DB
Okay...You would need something similar to the following:

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
  Dim cnn As New OleDbConnection
  Dim cmd As New OleDbCommand
  Dim val As Int32

  cnn.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0; Data Source=C:\Temp\Db1.mdb"

  cmd.Connection = cnn
  cmd.CommandText = "Select Max(High) From TableName Where DateField >= DateAdd('d', -14, Now())"

  val = cmd.ExecuteScalar

End Sub

You will have to change the ConnectionString to contain the path to your (.mdb) file.


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Visual Basic.NET

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