SQL Server Filter items for a user -

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i have order table , orderitem table. orders user placed less or equal 2 mins between them , have same products(number of products must match well) associated them.

based on question i'm able sucessfully filter out order placed <=2 mins apart user. i'm unable figure out how able orders user have same products associated them well.

i expecting output like

ordernumber  orderdatetime             userid 1111         april, 28 2012 09:00:00     1 3333         april, 28 2012 09:03:00     1 4444         april, 28 2012 09:40:00     2 5555         april, 28 2012 09:42:00     2

here have tried far: sql fiddle

using sql fiddle, came this...

with ordered (   select     ordernumber,     orderdatetime,     userid,     lag(orderdatetime,1) on (       partition userid       order orderdatetime     ) prev_time,     lead(orderdatetime,1) on (       partition userid       order orderdatetime     ) next_time,     lag(ordernumber,1) on (       partition userid       order orderdatetime     ) prev_ordernumber,     lead(ordernumber,1) on (       partition userid       order orderdatetime     ) next_ordernumber   [order] ), possibleduplicateorders (   select  ordernumber,           orderdatetime,           userid,           case              when datediff(minute,orderdatetime,next_time) <= 2 next_ordernumber             when datediff(minute,prev_time,orderdatetime) <= 2 prev_ordernumber             else null           end duplicateordernumber   ordered     datediff(minute,orderdatetime,next_time) <= 2  --this says if next value less or equal 2 minutes away return           or datediff(minute,prev_time,orderdatetime) <= 2 --this says if prev value less or equal 2 minutes away return ) select *     possibleduplicateorders pdo   not exists (       select *         order_item oi_left       left join order_item oi_right               on oi_right.ordernumber = pdo.duplicateordernumber              , oi_right.productid = oi_left.productid        oi_left.ordernumber = pdo.ordernumber       ,    oi_right.productid null     )   , not exists (       select *         order_item oi_left       left join order_item oi_right               on oi_right.ordernumber = pdo.ordernumber              , oi_right.productid = oi_left.productid        oi_left.ordernumber = pdo.duplicateordernumber       ,    oi_right.productid null     )

from can see, orders 4444 , 5555 should considered duplicates criteria. (within 2 minutes of each other , have matching items.) sql fiddle did not include quantities, did not include them in query, can add them in if need them.


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