Before you patch SQL Server, check backups, plan replica and cluster sequencing, record builds, and prepare a tested recovery path.
Calculating the Cost of a Slow Query
Cost of a slow query includes frequency, CPU, reads, waits, and user time; learn to turn SQL Server measurements into a practical tuning priority.
geometry STBoundary: A Polygon Edge Is a Different Shape
geometry STBoundary returns the edge of a shape as another geometry instance. I inspect that result independently from the source. A polygon’s boundary is not another filled polygon with the same area.
SQL SERVER – Two Methods to Retrieve List of Primary Keys and Foreign Keys of Database
There are two different methods to retrieve the list of Primary Keys and Foreign Keys from the database.
SQL SERVER – Restore Sequence and Understanding NORECOVERY and RECOVERY
What is the difference between NORECOVERY and RECOVERY when restoring a database, and what is the right restore sequence? A plain explanation of both.
Backup Timeline: Which Backups a Full Recovery Restore Needs
A backup timeline for the full recovery model: full, differential and log backups, and how to restore them in the right order. The post also tells a real DBA story.
Decimal Multiplication: Precision Can Reduce the Result Scale
Decimal Multiplication derives a result type from its operand types, and the precision limit can reduce the scale. I inspect three small products. A small numeric value does not necessarily imply a narrowly declared arithmetic result.