Parameter control of a query from combo boxes on a form

hardin4019

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Hi Guys,
Still feeling very much like a newbie. (In case it matters) I am using MS Access 97...

So I have a form that has different buttons each to a slightly different report, and now I am going to the extra step of adding a combo box next to each.

1st report, employee attendance grouped by SupervisorName (added a Supervisor ComboBox so I can run a report by supervisor and not the entire group of supervisors)

2nd report, employee attendance grouped by Employer (added a Employer ComboBox so I can run a report by employer (we have both our own employees and temporary contract employees)
3re report, shortened version of 2nd report, doesn't show detail of each abscence.

Dilemma, I found a great tutorial on how to make the parameters of a query bound to a control in a form. Problem is, all 3 of the above reports have the same data set collected from the same query. So if I don't choose an Employer, and run the 1st report, I get nothing, and like wise, if I run the 3rd report but don't pick a supervisor, I get nothing, and when I do pick a supervisor, I get only a fraction of what I should get.

Is there a way to say that if the value in the combo box is null, then select all available records, or am I better off making each report run from a slightly different query? I would still really like it that if I didn't pick a Supervisor Name or Employer and ran either report, it showed all the data gathered in the query.
 
Works! Awesome, thanks Pbaldy! I'll book mark their site for future reference.
 
No problemo. That site is worth a bookmark; great source of info.
 

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