The XML data type is not immutable
Immutability In many programming languages, strings of text are immutable, meaning they don’t change. When you modify a string, a new string is created in memory by copying the...
2019-12-04
119 reads
Born SQL with Randolph West
Is it true that editing a single row in Management Studio empties and reloads the entire table?
TL;DR: No. A customer recently brought up an interesting thesis, that if you edit a table’s values using SQL Server Management Studio (SSMS) using the edit feature, that the...
2019-11-27
7 reads
Installing SQL Server on Windows? Don’t forget these two useful switches
A few days ago on Twitter I wrote: Couldn’t connect to new SQL Server install because I forgot to enable TCP/IP. I’m the lead author for a Microsoft Press...
2019-11-20
59 reads
Did you know we have another SQL Server book coming out?
SQL Server 2017 Administration Inside Out was the first technical book I contributed to, and all its authors were very happy with how it turned out. All the content...
2019-11-13
40 reads
SQL Server 2019 is here
With the release of SQL Server 2019, I wanted to highlight in a single place some things that I’m excited about. Drawing on sessions I presented this year at...
2019-11-06
9 reads
When security and news collide
Behold! There’s a scary monster called skip-2.0, announced by ESET: This backdoor targets MSSQL Server 11 and 12, allowing the attacker to connect stealthily to any MSSQL account by...
2019-10-30
13 reads
Speaking at SQL Saturday Oregon
SQL Saturday Oregon — in the city of Portland — is taking place next weekend on Saturday November 2nd, 2019, and I’ll be presenting a revised edition of my...
2019-10-23
7 reads
Using indexed views? What is an imprecise or non-deterministic convert?
After last week’s post about using WITH (NOEXPAND) to query indexed views even on SQL Server Enterprise Edition, this week is a short but interesting side-road into deterministic values,...
2019-10-16
45 reads
Using indexed views? Don’t forget this important tip.
Today after fighting with designing a view that let me create a clustered index on it (indexed views — also known as materialized views — are awesome in the right context!),...
2019-10-09
46 reads
How to read documentation
I was thinking about a comment I made to my intern last week. She has been studiously attending to all the different things I do in my day (what...
2019-10-02
29 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
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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