Our user group’s first SQL Hour at Patni Computer Systems, Gandhinagar: Jacob Sebastian on Query Optimization Basics and my session Know your SQL.
Renaming or Disabling the sa Login
Renaming or disabling the sa login requires a dependency inventory, tested alternate admin access, and monitoring after the change.
STR: Check Width and Reduced Decimal Places
STR can reduce decimal places when its requested width cannot hold the complete fractional display. I inspect the complete text, including spaces and signs. A populated result does not guarantee that the number remains visible.
Patching an Availability Group in the Right Order
Patching an Availability Group safely means updating secondaries first, checking synchronization, failing over, and updating the old primary.
SQL SERVER – 2008 – Find If Index is Being Used in Database
How do you find if an index is being used in your database? My quick script checks sys.dm_db_index_usage_stats, so you can drop unused indexes safely.
What Is a Database Schema in SQL Server?
A database schema is a namespace inside a database. What dbo really is, why two tables can carry the same name, how a schema makes permissions something you set once, and why naming it in your code saves you from odd bugs.
Exploring the System Catalog With Queries
Exploring the system catalog with queries reveals SQL Server objects, columns, indexes, and dependencies without relying on stale diagrams.