Please demonstrate the steps for updating an existing time series dataset used in a prior data mining project with a fresh batch of data. Then, repeat the mining performed for the original dataset with the freshly updated dataset.
2026-07-29
2026 T-SQL wish list covering native Parquet imports, arrays, OVERLAPS, simpler licensing, and cloud storage
2026-07-27
A Data Warehouse acts as a centralized repository, is subject oriented, time variant and non-volatile repository. This article covers some concepts that will help you better design these structures.
2026-07-24
This article documents a SQL injection vulnerability I discovered in sys.sp_dbmmonitorupdate, a Microsoft-signed system stored procedure. For other SQL Server security vulnerabilities I’ve discovered, see the full series here.
2026-07-22
Large databases usually have a negative impact on maintenance time, scalability and query performance. For maintenance, these large single databases have to be backed up daily while the amount of actual changing data might be small. For performance, tables without correct indexes result in full table or clustered index scans. As the data grows the total query time increase linearly. How can we decrease downtime for the maintenance window for large databases and optimize the performance of daily queries?
2026-07-20
Learn how to use VECTOR_DISTANCE and VECTOR_SEARCH in SQL Server to find semantically similar data.
2026-07-17
I work with databases for a living. I teach people, and I help them via consulting. And as far as I can remember, I’ve never written something about how b-trees work.
2026-07-15
This article examines three recurring database-layer failures documented in the EDPB’s 2026 enforcement findings: the complexity of executing erasure across relational schemas, the backup paradox that can silently undo compliant deletions, and the audit log contradiction that traps organizations between two competing obligations.
2026-07-14 (first published: 2026-07-13)
We had an issue with a SQL Server database in an Always On Availability Group (AOAG) where it was not synchronizing the secondary replica even though it was using the “Synchronous commit” Availability Mode for the secondary replica. This article explains how to troubleshoot and resolve:
2026-07-10
Learn how to call locally hosted Ollama embedding models from SQL Server using sp_invoke_external_rest_endpoint
2026-07-08
By Brian Kelley
If you haven't seen the announcement, Anthropic was able to utilize Claude (Mythos Preview)...
Most embedding pipelines on AWS have the same shape: a job reads rows out...
By Arun Sirpal
Transaction log issues are one of the quietest ways a healthy database turns into...
Comments posted to this topic are about the item Symmetric Key Encryption
Comments posted to this topic are about the item The “Successful Login” Dilemma: Why...
Comments posted to this topic are about the item Building Your Own Software
If I run this statement in SQL Server 2025, how is the password encrypted?
CREATE SYMMETRIC KEY MySymmetricKey WITH ALGORITHM = AES_256, KEY_SOURCE = 'My secret key source passphrase', IDENTITY_VALUE = 'My secret identity value' ENCRYPTION BY PASSWORD = 'S&perS#cretP@ssword7'; GOSee possible answers