Hi All -
I have a query that takes about 6 sec in the SQL 2008 version and after upgrade to SQL 2014, the same query is taking about 8 mins.
I have changed the compatibility level of the database to SQL 2008 in the 2014 server, and then it started working as previous without any issues.
I have researched so many threads and posts on this but none are giving me the guidance on what should be done.
There were multiple threads stating that the issue with the new cardinality estimator is fixed, but couldn't find any thing useful even after installing the CU6 version of SQL Server 2014 SP1.
For me the compilation time is not taking much time, while the execution is taking around 8 mins when compared to less than 6 sec in 2008 version.
Can someone provide any recommendations of what needs to be done?
Thanks, Kumar