Why Your SQL Permissions Disappeared
When you change a schema owner in SQL Server, all object-level permissions vanish instantly. There is no warning. Here's how to prevent it and fix it when it happens.
2026-07-10
3,165 reads
SQL Server security
2026-06-22
518 reads
2026-06-10
787 reads
2026-06-03
321 reads
Cross-database ownership chaining in SQL Server: security risks, behavior, and privilege escalation
A dangerous privilege-escalation path exists in SQL Server when cross-database ownership chaining, system database defaults, and overly permissive permissions are combined.
2026-04-24
Why disabling the SQL Server sa account still matters in 2026
Every few years, someone asks a familiar question: do we really still need to disable the sa account in SQL Server? After all, it’s 2026. SQL Server has better encryption, better auditing, better defaults, and more security features than ever before. Surely this old guidance belongs in the past?
2026-03-20
Guarding Against SQL Injection at the Database Layer (SQL Server)
This article presents a way to check and validate input before using it in your dynamic SQL queries to prevent SQL Injection problems.
2026-03-02
4,848 reads
Microsoft Security Changes and SQL Server
Windows is changing its security, which will affect SQL Server.
2026-02-14
617 reads
Exploiting SQL Server Date Correlation Optimization: How Tampered Backups Enable Cross-Database Data Leaks
This article is a follow-up to SQL Server DBaaS Vulnerability: Decrypting System Code & Exfiltrating User Data, in which we saw some vulnerabilities that affected pretty much all DBaaS offerings available in the cloud. Now, we’ll look at another vulnerability that once again affects every major cloud vendor.
2026-01-30
SQL Server Privilege Escalation via Replication Jobs
Learn how attackers can exploit SQL Server replication cleanup jobs to escalate privileges from db_owner to sysadmin
2026-01-16
Blogs
Architecting Zero Downtime Deployments–Day of Data Boston
By Steve Jones
Here are the resources for my talk at Day of Data Boston. Slides –...
The Book of Redgate:A Prehistory
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I’ve covered the values in a number of previous posts on the Book of...
Evidence-bound: what AgentDBA will and won’t link
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When the evidence names the database, it says so. When it doesn’t, it stops....
Forums
Split Large Queries in Athena with a Simple Modulo Trick
Comments posted to this topic are about the item Split Large Queries in Athena...
Finding Trailing Spaces
Comments posted to this topic are about the item Finding Trailing Spaces
Question of the Day
Finding Trailing Spaces
I have some data in a SQL Server 2025 database. It looks like this for the dbo.Customer table:
CustomerID CustomerName PreferredName 1 Steve Steve 2 Andy Andy 3 Brian Brian 4 Allan Allan 5 Devin Devin 6 Steve Steve 7 Sally SallyI want to detect which names have a single trailing space. The CustomerName is a varchar() and the PreferredName is a CHAR(). Does this query detect the problem rows?
SELECT
CustomerID,
CustomerName,
PreferredName
FROM Customer
WHERE CustomerName <> RTRIM(CustomerName)
OR PreferredName <> RTRIM(PreferredName); See possible answers