Tagged Questions
7
votes
3answers
280 views
Why are there execution plan differences between OFFSET … FETCH and the old-style ROW_NUMBER scheme?
The new OFFSET ... FETCH model introduces with SQL Server 2012 offers simple and faster paging. Why are there any differences at all considering that the two forms are semantically identical and very ...
0
votes
1answer
222 views
Query performance and join hints, plan cost, and duration
Having some trouble identifying why a query's duration would decrease when using OPTION (HASH JOIN) or OPTION (MERGE JOIN), although plan cost increases.
Background
I have a reporting database using ...
9
votes
2answers
897 views
How (and why) does TOP impact an execution plan?
For a moderately complex query I am trying to optimize, I noticed that removing the TOP n clause changes the execution plan. I would have guessed that when a query includes TOP n the database engine ...
