In this article, we will delve into the use cases for SQL Server heaps, scenarios where caution should be exercised, and effective management techniques.
Forwarded Records and Performance – SQL in Sixty Seconds #155
Forwarded records make SQL Server read extra pages when it scans a heap. In this SQL in Sixty Seconds video, I explain forwarded records and performance.
SQL SERVER – Finding Fragmentation in Forwarded Records
I was asked by my client if there any way to know if there is any way of Finding Fragmentation in Forwarded Records. Let us learn in today’s blog post.
SQL SERVER – Heaps, Scans and RID Lookup
The question was do heaps are very bad and always force a table scan? Let us learn about RID Lookup, Heaps and table scan.
RID Lookups on Heaps vs Key Lookups on Clustered Tables
Compare RID lookups on heaps with clustered key lookups, inspect forwarded records, and test covering indexes with actual plans and reads.
SQL SERVER – Parallelism for Heap Scan
Two DBAs asked me if their table needed a clustered index. Our conversation during a Health Check turned into a lesson on parallelism for Heap Scan.
SQL SERVER – What is Forwarded Records and How to Fix Them?
Forwarded Records in heap tables still puzzle many SQL Server users, years after I first wrote about them. Here is what they are and how to fix them.