Writing my presentation 2: Designing the presentation
This series is about my process for writing my upcoming presentation at SQL Saturday Chicago #825.
Today’s goals
Today I’m going to...
2019-03-08
342 reads
Finding single use plans in the plan cache
A single use plan is an entry in the SQL Server plan cache that was only used once. When a...
2019-03-07 (first published: 2019-02-19)
3,908 reads
Writing my presentation part 1: The brainstorm/dump
For this session, I’m relying on a mixture of previous blog posts and new material/demos that I’ll have to write....
2019-03-07
396 reads
Writing a new session/Preparing for SQL Saturday Chicago
So, I’m presenting a session at SQL Saturday Chicago on March 23, 2019. This is a new session, called Performance...
2019-03-06
260 reads
CTRL + F in SSMS execution plans
I just discovered this the other day and I had to share it.
First, we need a query in Management...
2019-03-05
640 reads
Partitioning 3: Beyond just partition elimination
In Partitioning 2, I showed how to analyze which partitions were accessed by our Index Seek. However, we were searching...
2019-03-04 (first published: 2019-02-14)
1,865 reads
It’s always parameter sniffing: Line Endings
Combining a few themes of recent posts today. I’ll mix in some sp_executesql, it’s always parameter sniffing, and the plan...
2019-02-28
952 reads
A short guide to sp_executesql
Last week I talked about single use plans. One way to increase execution plan re-use is to parameterize queries by...
2019-02-27
2,200 reads
Partitioning 1: Non-partition aligned queries
Here’s my take on partitioning. I’ll be focusing on getting queries to perform on partitioned tables, and not on partition...
2019-02-27 (first published: 2019-02-11)
2,498 reads
Database context and compatibility level
To add onto yesterday’s post about which cardinality estimator (CE) your query will use, there’s an additional complexity. This specifically...
2019-02-26
826 reads
Blogs
KDA: Echoes of Deception - Case 6
By Zikato
A cryptic message, a book cipher hidden in art provenance records, and a trail...
Capturing My Own Metrics: #SQLNewBlogger
By Steve Jones
A customer was trying to compare two tables and capture a state as a...
Red Flags in Your Query (T-SQL Tuesday #200)
By Zikato
When I'm looking at a query, I bet it's bad if I see... a...
Forums
BIT_COUNT II
Comments posted to this topic are about the item BIT_COUNT II
I Can't Make You Learn
Comments posted to this topic are about the item I Can't Make You Learn
Why Your SQL Permissions Disappeared
Comments posted to this topic are about the item Why Your SQL Permissions Disappeared
Question of the Day
BIT_COUNT II
In SQL Server 2025, I have a table (dbo.UserPermission) that contains this data:
UserID UserPermissions 15 23 37 4 NULLWhat is returned when I run this code:
select bit_count(UserPermissions) as PermissionCount from dbo.UserPermission where UserID = 4;See possible answers