Question

I have an SQL query which takes up a parameter stored in the db. I want to invoke the same from VBA code which is running on the same db. I am using MS Access for my work.

So for example consider, I have an SQL query ‘Q’ which takes a parameter ‘p’, I intend to invoke this SQL query from my VBA code ‘C’ , which also naturally involves passing this parameter ‘p’ to the query.

Help much appreciated
Soham

Answer 1

There are a few possibilities here.

Let us say it is a SELECT query built on a form that holds the parameters to be used and that the input is safe:

s = "SELECT * FROM MyTable WHERE AText ='" & Me.MyText & "'"

This can be used like so:

Forms!SomeForm.RecordSource = s

Or

Set qdf = CurrentDb.CreateQueryDef("NewQuery", s)

However, the above can be done in other, better ways.

Let us say it is a ACTION query run from a form that holds the parameters to be used and that the input is safe:

s = "UPDATE MyTable Set AText ='" & Me.MyText & "'"

Then

Set db = CurrentDB
db.Execute s, dbFailOnError

Or you can use a temporary query, which can be safer:

'Temporary query
s = "UPDATE MyTable Set AText = MyRext"

Set qdf = db.CreateQueryDef("", s)

qdf.Parameters!MyText = Me.MyText
qdf.ReturnsRecords = False
qdf.Execute dbFailOnError

Something similar to the above would also be suitable for an existing query.

You can also pass the parameter to a procedure, in which case Me.MyText becomes a variable, or you can use Inputbox, which is rarely a good idea.

After that, there is the whole world of ADO.