Seeking on a Heap, and Two Useful DMVs
- by Paul White
So far in this mini-series on seeks and scans, we have seen that a simple ‘seek’ operation can be much more complex than it first appears. A seek can contain one or more seek predicates – each of which can either identify at most one row in a unique index (a singleton lookup) or a range of values (a range scan). When looking at a query…