Performance Basics: Key lookup operator and query optimization

One of the most basic things to improve performance in our queries is using indexes, but this doesn't mean that...

Considerations for dealing with big databases

Stress everywhere, user wants everything "Para ayer"Photo by Bernard Goldbach

If you are like me, and have SQL Server instances with...

Meltdown and Spectre exploits, they can affect your SQL Server instances

A bug was recently discovered on almost every processor made on the last 10 years, and it seems that almost...

Happy new year 2018 to all!

From SQL Guatemala, we wish you a happy new year 2018.

 We hope this new year brings you joy and zero:...

SQL Vulnerability Assessment

A very interesting feature was recently added to SQL Server Management Studio 17.4 (SSMS): The new SQL Vulnerability Assessment.

What is...

How to check advanced options in SQL Server?

To check the available advanced options configured at instance level in SQL Server, you need to use the  sp_configure system...

Finally I am MCSA

I have recently obtained the certification Microsoft Certified Solutions Associate: SQL Server 2012/2014.
I began with this path almost 2 years...

Query to determine mirrored database status

I am sharing today a SQL Script to quickly check on an instance which databases are in mirrored and their...

SSIS Basics: Integration Services Catalogs

In the new Project deployment model for SQL Server Integration Services, a new SQL Server database is used to provide...

T-SQL Basics: MERGE Statement

One useful sentence when you need to add data to an existing table from an external source or database, and...