Choose a SQL client tool by testing result handling, execution plans, transactions, and connection identity before trusting it with real work.
What Is a Trigger in SQL Server?
A trigger in SQL Server runs because something else happened, and you never call it. The inserted and deleted tables, why it fires once per statement and not once per row, and when to reach for something else.
Cosine, Euclidean or Dot: Picking a Vector Distance Metric
Cosine, Euclidean and dot can rank the same vectors differently. Here are tiny examples you can check by hand, plus how to choose.
Fixing Collation Conflicts Between tempdb and Your Database
Fix tempdb collation conflicts with DATABASE_DEFAULT, compare a join-level COLLATE, and inspect contained-database behavior.
What Is a Stored Procedure in SQL Server?
A stored procedure is SQL with a name, a door and a contract. Why granting EXECUTE beats granting table access, what parameters buy you, and the plan reuse story people get half right.
What Is tempdb, and Why Everyone Shares It
tempdb is one scratch database shared by every database on the instance. The three kinds of thing that land in it, why it is rebuilt at every restart, and the reason its file count keeps coming up.
What Is a Transaction in SQL Server?
A transaction in SQL Server is a group of changes that all happen or none do. A rollback that undid 16,440 rows, what ACID means in four short words, and the open transaction that quietly fills a drive.