3 つのテーブルの詳細列が常に更新されています。ID が 3 つのテーブルから一致する指定された日時の間の最新の lastUpdateTime を取得したいと思います。
tblClient
ID, AddressDetail, lastUpdateTime
789 Address '2013-09-27 00:00:00:000'
789 Address '2013-09-23 00:00:00:000'
897 Address '2013-09-22 00:00:00:000'
354 Address '2013-09-28 00:00:00:000'
tblOrder
ID, OrdersDetail, lastUpdateTime
789 Order '2013-09-26 00:00:00:000'
897 Order '2013-09-30 00:00:00:000'
897 Order '2013-09-27 00:00:00:000'
354 Order '2013-09-30 00:00:00:000'
tblAccount
ID, AccountDetail, lastUpdateTime
789 Detail '2013-09-23 00:00:00:000'
897 Detail '2013-09-25 00:00:00:000'
354 Detail '2013-09-28 00:00:00:000'
--これではうまくいきません
SELECT a.ID,a.AccountDetail,max(A.lastUpdateTime)
From tblClient A
left join tblOrder B
on A.ID = B.ID
left join tblAccount C
on C.ID = A.ID
where A.LastUpdateTime between '2013-09-20 00:00:00:000' and '2013-09-30 00:00:00:000'