select count(*) statement

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Having a problem counting number of record from mySql database:

SQL

adpter = New MySqlDataAdapter("select count(*) from bookings where busNumber = '" & txtBusNumber.Text & "' and departTime = '" & cmbDepartTime.Text & "' and departDay = '" & cmbDay.Text & "'", con)
        Dim myDataSet = New DataSet
        adpter.Fill(myDataSet, "bookings")
        

        txtCount.Text = myDataSet.Tables("bookings").Rows(0).Item(0)

I get 0...

please Help

Posted 4-Oct-12 6:01am

Member 9254084

Updated 4-Oct-12 6:11am

Joan M

v2

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Sandip.Nascar · Accepted Answer · 2012-10-04T06:10:00

Check your database and see, if you really have any records for the filter criteria you set. From the query, it is clear that you have all the filter fields as varchar, so the query seems okay.

Some optimization point,
You better use parameterized query. This is not a must requirement but always advisable.

I see, you use a dataset to get the count value. This will take more resource. So, I suggest, you use ExecuteScalar.

cheers

select count(*) statement

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