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Question: How to Find Definition of Computed Column in SQL Server using T-SQL?
Answer: A very fair question, I received the other day.
Delete qualified rows from multiple tables with as few logical reads as you can. This puzzle gives a setup script for three small tables, the two rules for the delete and a starting script that costs 19 logical reads. Your task is to beat that number and stay correct.
Compare SCHEMA_ONLY and SCHEMA_AND_DATA memory-optimized tables, inspect logging and recovery, and test an isolated offline-online cycle.
DBCC DROPCLEANBUFFERS removes every clean page from memory, so the next query reads from disk. This post counts the pages of one database before and after, shows why a CHECKPOINT comes first, and compares a cold read with a warm read.
Only official documentation which I could find was about wait statistics related to Parallel Backup Queue is very little available online.
Your events have a user and a time but no visit ID. Here is how to infer sessions from an idle gap with LAG and a running sum.
A logical name mismatch means sys.master_files and sys.database_files disagree about a file name. A tested demo shows both views on one server, and a script checks every database. The post explains the secondary replica case and its fix.
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