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Access SQL select inner join  statement

Posted on 2006-06-26
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Last Modified: 2008-01-09
Could someone please help me! I am trying to select specific records from a table using sql and I get all the records all the time.

I am using two datatables    Shifts and jobs, the join should be on JobNo and only select the ones that match the text selected in the listbox.


Here is the code.


        Dim jobString As String
        jobString = "'"  &  lstJobs.SelectedItem & "'"              '  double, single, double quotes & [contents of textbox] & double,single,double quotes.
        dbCommand.Connection = dbConnection                   'defined at the top of the form
        dbCommand.CommandType = CommandType.Text
        dbCommand.CommandText = "Select * from shift inner join jobNo on  shift.jobNo = jobs.jobNo where shift.JobNo = " & jobstring


        da.SelectCommand = dbCommand
        da.Fill(dt)
        grdShift.Visible = True
        grdShift.DataSource = dt
   

'  the data grid shows all the records not just the ones that match the criteria



Thanks,
Bsturge

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Question by:bsturge
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4 Comments
 
LVL 52

Expert Comment

by:Carl Tawn
ID: 16985141
Have you checked that jobString contains a valid value ? What is the data-type of shift.JobNo ?
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LVL 34

Expert Comment

by:Brian Crowe
ID: 16985147
you probably need either single or double quotes around the shift.JobNo value.  I'm not sure about Acess but for SQL it would be

dbCommand.CommandText = "Select * from shift inner join jobNo on  shift.jobNo = jobs.jobNo where shift.JobNo = '" & jobstring & "'"
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LVL 34

Assisted Solution

by:Sancler
Sancler earned 250 total points
ID: 16985836
Try this

        dbCommand.CommandText = "Select * from shift inner join jobs on  shift.jobNo = jobs.jobNo where shift.JobNo = " & jobstring

At the moment you have "inner join jobNo" but at that point you need to name the table, not the field.

Roger
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LVL 2

Accepted Solution

by:
Bill_PSC earned 250 total points
ID: 16986153
Do the tables have a foreign key relationship?  I would try putting the datatables into a dataset and enable the foreign key relationship.

dataSet.Relations.Add(yourKey)
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