If I have a first query that returns 3000 records, is there a way to build a
second query based upon the first to pull a random sampling of say 225
records from it?
QB
You can use the Top Values property of a query, with help
from a little VBA. Put this little function into a Module:
Public Function RndNum(vIgnore As Variant) As Double
Static bRnd As Boolean
If Not bRnd Then
'Initialize the random number generator once only
bRnd = True
Randomize
End If
RndNum = Rnd()
End Function
Then add a calculated field to your Query by typing
Shuffle: RndNum([fieldname])
in a vacant Field cell, where [fieldname] is any field in
your table - this forces Access to give a different random
number for each record.
Sort the query by Shuffle, and set its Top Values property
to the number of records you want to see.