Here's the query I have written:
SELECT
MemberContact.membershipno,
membercontact.firstname,
memberbasic.joindate,
WIRecords.WIID AS WInID,
wirecords.WIDate AS WInDate,
DSum("daysteps","stepcount","stepsdate between #" & Format([WinDate]-1,"mm/dd/yyyy") & "# And #" & Format([WinDate]-7...