I have the following query which runs in Sql Server 2008, it works well if data is small but when it is huge i am getting the exception. Is there any way i can optimize the query
select
distinct olu.ID
from olu_1 (nolock) olu
join mystat (nolock) s
on s.stat_int = olu.stat_int
cross apply
dbo.GetFeeds
(
s.stat_id,
olu.cha_int,
olu.odr_int,
olu.odr_line_id,
olu.ID
) channels
join event_details (nolock) fed
on fed.air_date = olu.intended_air_date
and fed.cha_int = channels.cha_int
and fed.break_code_int = olu.break_code_int
join formats (nolock) fmt
on fed.format_int = fmt.format_int
where
fed.cha_int in (125, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 35, 36, 37, 38, 39, 40, 41, 43, 117, 45, 42, 44, 47, 49, 50, 51, 46, 52, 53, 54, 55, 56, 48, 59, 60, 57, 63, 58, 62, 64, 66, 69, 68, 67, 65, 70, 73, 71, 74, 72, 75, 76, 77, 78, 79, 82, 80, 159, 160, 161, 81, 83, 84, 85, 88, 87, 86, 89, 90, 61, 91, 92, 93, 95, 96, 97, 98, 99, 100, 94, 155, 156, 157, 158, 103, 104, 102, 101, 105, 106, 107, 108, 109, 110, 119, 111, 167, 168, 169, 112, 113, 114, 115, 116, 170, 118, 120, 121, 122, 123, 127, 162, 163, 164, 165, 166, 128, 129, 130, 124, 133, 131, 132, 126, 134, 136, 135, 137, 171, 138, 172, 173, 174) and
fed.air_date between '5/27/2013 12:00:00 AM' and '6/2/2013 12:00:00 AM' and
fmt.cha_int in (125, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 35, 36, 37, 38, 39, 40, 41, 43, 117, 45, 42, 44, 47, 49, 50, 51, 46, 52, 53, 54, 55, 56, 48, 59, 60, 57, 63, 58, 62, 64, 66, 69, 68, 67, 65, 70, 73, 71, 74, 72, 75, 76, 77, 78, 79, 82, 80, 159, 160, 161, 81, 83, 84, 85, 88, 87, 86, 89, 90, 61, 91, 92, 93, 95, 96, 97, 98, 99, 100, 94, 155, 156, 157, 158, 103, 104, 102, 101, 105, 106, 107, 108, 109, 110, 119, 111, 167, 168, 169, 112, 113, 114, 115, 116, 170, 118, 120, 121, 122, 123, 127, 162, 163, 164, 165, 166, 128, 129, 130, 124, 133, 131, 132, 126, 134, 136, 135, 137, 171, 138, 172, 173, 174) and
fmt.air_date between '5/27/2013 12:00:00 AM' and '6/2/2013 12:00:00 AM'
Do a backup from your production database (with many rows) and play with it locally on you development machine. The optimization may take some time it may actually be quite hard if you are new to sql. Break down the Query into several temporary tables and join them toghether in the end. Try and remove the dbo.GetFeeds(...) function from the Query to see if that function is the problem.
From IN (Transact-SQL)
So I would recomend inserting the values into a temp table and then either joining onto that table or selecting the IN from the table
So something like
SQL Fiddle DEMO