TSQL ScriptDOM is a useful library for parsing scripts into an abstract syntax tree. I've built a web tool that helps visualize this tree as a learning exercise.
Foreword
I've leveraged...
2025-12-03 (first published: 2025-11-09)
107 reads
The crime spree in Digitown is not ending. This time 20 cars have been stolen and we need to find where they’re stored.
The problem
This is the abridged case description....
2025-06-09 (first published: 2025-05-16)
273 reads
The people of Digitown are being targeted by phishermen, and they need my help to stop them in their tracks.
The problem
The police have asked for our assistance, and we’ve...
2025-06-02 (first published: 2025-05-13)
195 reads
Another KDA case: Digitown’s utility bills suddenly doubled for no good reason. With the election coming up, I got pulled in to figure out what went wrong. I’ve got...
2025-05-30 (first published: 2025-05-02)
197 reads
I’ll walk through the KDA UI and tackle the first challenge before diving into the real cases.
The UI layout
This is what your layout might look like:
LHS menu where you...
2025-05-12 (first published: 2025-04-26)
31 reads
While I mostly write about SQL Server, I have a soft spot for Kusto. In this series, I will explore solutions to fun challenges collectively known as the Kusto...
2025-04-27 (first published: 2025-04-26)
102 reads
Learn how to deploy schema changes in an always-online SQL Server environment without a maintenance window. This utility reduces blocking and improves deployment success.
The problem
I attempted to deploy a...
2025-03-19 (first published: 2025-03-07)
196 reads
I haven’t had a rant post in a while. There is a saying: “Anything before the word ‘but’ is ignored”. I love Extended Events, but …
reading the extended event...
2024-11-04 (first published: 2024-10-18)
412 reads
I originally planned this post just as an answer to DBA Stack Overflow question: How can I get the list of tables in all the stored procedure? After preparing...
2024-09-13 (first published: 2024-08-26)
262 reads
This month’s invitation is from Mala Mahadevan (b) asking us how we manage the database code. Since this is my passion project, I have a few basic tips to...
2024-09-06 (first published: 2024-08-13)
412 reads
One feature that I have been waiting for years! The new announcement around optimize...
Following on from my last post about Getting Started With KubeVirt & SQL Server,...
By DesertDBA
I haven’t posted in a while (well, not here at least since I’ve been...
Comments posted to this topic are about the item Refactoring SQL Code, which is...
Comments posted to this topic are about the item The Read Committed Snapshot Isolation...
Comments posted to this topic are about the item Working with JSON/JSONB Data in...
I am currently working with Sql Server 2022 and AdventureWorks database. First of all, let's set the "Read Committed Snapshot" to ON:
use master; go alter database AdventureWorks set read_committed_snapshot on with no_wait; goThen, from Session 1, I execute the following code:
--Session 1 use AdventureWorks; go create table ##t1 (id int, f1 varchar(10)); go insert into ##t1 values (1, 'A');From another session, called Session 2, I open a transaction and execute the following update:
--Session 2 use AdventureWorks; go begin tran; update ##t1 set f1 = 'B' where id = 1;Now, going back to Session 1, what happens if I execute this statement?
--Session 1 select f1 from ##t1 where id = 1;See possible answers