The following query runs for 10 mins on tbl with 1 mill records on sql server 2012 RTM, and for 1.5 min on sql server 2012 build 3128.
dbcc freeproccache
dbcc dropcleanbuffers
go
select*
FROM"Demo Database (7-1)".dbo."CRONUS International Ltd_$Item"AS"Item"WITH(READUNCOMMITTED)
WHERE(ISNULL("Item"."No_",N'')>=N'')
ORDERBY"No_"ASC
go
I am trying to pinpoint the build/hotfix that resolved the problem, and am unable to. Can you help?