geometry MakeValid returns a valid geometry from an invalid instance, but the result can change type. I keep the original beside the proposed repair. A validity flag alone does not describe everything that changed.
Random Tokens in SQL Server: Generation, Storage and Expiry Checks
Random tokens in SQL Server need more than a generated value. Their stored state must define expiry, revocation and whether consumption already occurred. A guarded disposable fixture makes the boundary conditions explicit.
Documenting a Server You Just Inherited
Documenting a server you just inherited starts with identity, databases, files, jobs, access, alerts, and tested recovery ownership.
GENERATE_SERIES: Make the Step Explicit
GENERATE_SERIES returns numbers within a declared range. These read-only examples specify the step, preserve input types and order every returned series deliberately.
Heap Tables: When a Table Without a Clustered Index Hurts
Find heap tables, inspect forwarded records and empty-page behavior, and choose between a clustered index and a planned rebuild.
SQL SERVER – Computed Column – PERSISTED and Performance
My computed column series in one list: PERSISTED versus non-persisted for storage and speed, and how an index on the column improves performance.
Relational Division in T-SQL: Customers Who Bought Every Product
Solve relational division with counts and double NOT EXISTS, then handle duplicates, NULL values, empty requirements, and exact matching.