On May 10th, all Israeli experts who participated in the conference will share their experience with the Israeli community and convey the best sessions they attended in #SQLBits 2023! I will also be one of them and deliver my favorite session!
Read More »I’m speaking – The best of SQLbits 2023
Learn how I resolved an interesting use case of a database stuck in Single-User mode after restoring from a backup. Read my latest blog post to find out more!
Read More »Resolved: Database Stuck in Single-User Mode
On June 3rd, 2023, at the Data Saturday event in Croatia, I will be delivering LIVE my session: “How to Save Money On Your SQL Server Hardware“!
Read More »Speaking at Data Saturday Croatia 2023 and visiting SQLBits 2023!
Redundant indexes in SQL Server are a phenomenon that is more common than I’d like to admit. I see it in quite a lot of shops. Meaning, that there’s still a significant target audience for this blog post!
This article published by Brent Ozar is very informative about redundant/duplicate indexes, what they mean, why they’re bad, and what should be done with them.
Also, a few years ago, Guy Glantser published a post about dropping redundant indexes. It’s very useful for finding all redundant indexes within all tables in a specific database.
But what both of these articles are missing – is the ability to easily generate Drop/Disable commands for these redundant indexes.
Read More »Drop All Redundant Indexes In Every Database All At Once
This month’s T-SQL Tuesday is an especially interesting one! Hosted by Raul Gonzalez (b|t), Raul asks us to talk about “Worst Practices” and when could they be a good thing to use. After all, the actual “best practice” is – well… it depends!
Read More »T-SQL Tuesday #158 – When Worst Practices are the Best
In this post, I will introduce you to a special T-SQL script that you can use for detecting potential SQL injection attacks in your database, as well as application-level bugs that you didn’t necessarily know you had.
Read More »Detect Application Bugs and Vulnerabilities You Didn’t Even Know About
Sometimes when trying to access a linked server, you’d get an error saying “Login failed for user NT AUTHORITY\ANONYMOUS LOGON”. This happens because you’re connected using Windows authentication, and SQL Server fails to “forward” your credentials to the linked server.
Hopefully, with this blog post, I’ll provide you with an easy-to-understand step-by-step guide, which would help you resolve the issue the right way, without any workarounds.
Read More »Resolved: Login failed for user NT AUTHORITY\ANONYMOUS LOGON – Delegation Step-by-Step
While being an awesome feature introduced in SQL Server 2012, Availability Groups were always missing the ability to synchronize server-level objects between replicas. This finally changed 10 years later, in SQL Server 2022, with the introduction of “Contained Availability Groups”.
Read More »What is not contained in contained Availability Groups
In today’s post, I’ll be providing a useful script to detect and troubleshoot when the query plan cache contains too many different plans for the same query hash, which could happen as a result of possible parameterization issues.
Read More »Too Many Plans for the Same Query Hash
SQL Injection is something I would expect any reader of my blog to be familiar with. Despite being one of the oldest database attack methods, it still persists for decades on the OWASP Top Ten list of critical security risks to web applications.
In fact, instead of dying out, it only seems to be getting more clever and even automated. With “hacker bots” scouring the web and automatically probing for injection vulnerabilities to exploit. I know, as I’ve once been a victim of such attacks in the past.
But today I’m not actually going to talk about that. Today, I’m going to ask the question: When is SQL Injection dangerous, even if it’s perfectly safe?
Read More »Could SQL Injection be dangerous even when perfectly safe?