How do I rewrite to improve performance of the below query. select S.col1, S.col2, MaxDDate from s_tbl s left join (select col1, MAX(DDate) MaxDDate from F_tbl group by col1 ...
In SQL Server 2012 Enterprise Ed., which index types do not support online index rebuilds? and why? and which activity-operations can prevent online index rebuilds?
With SQL traces I was able to analyze them with Database Engine Tuning Advisor to obtain basic recommendations for perf. tuning(missing indexes, statistics,...). Now, with SQL 2012 and Extended ...