Two DBAs asked me if their table needed a clustered index. Our conversation during a Health Check turned into a lesson on parallelism for Heap Scan.
What is Read Ahead Read in SQL Server? – Interview Question of the Week #197
Question: What is Read Ahead Read in SQL Server?
Answer: This is SQL Server’s feature which brings data pages into the buffer cache.
SQL SERVER – Finding Compression Ratio of Backup
Is there a way to know the compression ratio of backup files in SQL Server? Here is a quick script on msdb backupset that compares backup size with compressed size.
SQL Authroity News – Optimizing Lazy Spool – PASS Blog
A sneak preview of my SQLPASS sessions: I wrote about optimizing Lazy Spool on the PASS blog, and here are the first two paragraphs with a link to the rest.
SQL SERVER – How to Get List of SQL Server Instances Installed on a Machine Via T-SQL?
A registry query lists SQL Server Instances recorded on the Windows host. A customer wanted a T-SQL-only method.
Drop Multiple Tables with One DROP TABLE Statement
To drop multiple tables in SQL Server, list them in one DROP TABLE statement, referencing tables first. This post tests the order rule on a parent and child table and shows what happens after an error. It also covers IF EXISTS, drops by name pattern and temporary tables.
Do Index Reorganization Update Statistics? – Interview Question of the Week #196
Question: Do Index Reorganization Update Statistics?
Answer: No. Index Reorganization does not update Statistics of your database.