About This Blog

A copy of my content from SQLBlog.com plus occasional new content.
Showing posts with label Bitmaps. Show all posts
Showing posts with label Bitmaps. Show all posts

Saturday, 24 August 2019

Batch Mode Bitmap Demos

Batch Mode Bitmap Demos

This is a companion post to my main article Batch Mode Bitmaps in SQL Server. This post provides demos and illustrations to supplement the technical article.

The scripts presented here were run on SQL Server 2017 CU 16.

Thursday, 7 July 2011

Bitmap Magic (or… how SQL Server uses bitmap filters)

Bitmap Magic (or… how SQL Server uses bitmap filters)

Question

Can a parallel query use less CPU than the same serial query, while executing faster?

The answer is yes! To demonstrate, I’ll use the following two (heap) tables, each containing a single column typed as integer:

Tables #BuiltInt and #Probe