performance - To make the following query run in one sec in sql server 2012 -


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I have to retrieve the following query the top 10 commands that were not shipped before a certain date : 

  select from top 10 * (select o_orderkey, o_shippriority, o_orderdate, sum (l_extendedprice line item greater than * (1-l_discount)) by joining the line item l , L.l_partkey, split by l.l_suppkey) as new_with_resources_array_l.l_orderkey = o.o_orderkey on where l.l_shipdate> '2014-08-05' and o_orderstatus = 'o') by potential_revenue desc order;

The linetime has 60M records and the order has 15M records.

l_shipdate and l_orderkey is a cluster index divided on it date and o_orderkey < There is a package index for Code> Order table I have created a non-cluster index on the O-Orstatus column The query is taking 11 seconds to run and I'm wondering what else Can it be done to improve the performance of the query?

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try these indexes 

  create nonclustered index on neworders Ix_neworders ( O_orderstatus) (o_orderdate, o_shippriority); Include non-indexed index Ix_lineitem on lineitem (L_AdadePrices) (l_discount, l_partkey, l_suppkey);

Still the top expensive operation is. When you want to explain the plan, take a look for the key lookup. If you have, try to make the appropriate index + Focus on the index scanner wants to index them try to index.


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