Attending a climate protest for the first time

This is a blog devoted to databases, but for once I’m going to go off topic and talk about something I did at the weekend that I’ve never done...

Database Fundamentals #21: Using the JOIN Operator, OUTER JOIN

The OUTER JOIN returns one complete set of data and then the matching values from the other set. The syntax is basically the same as INNER JOIN but you...

DMV - Active queries sorted by CPU usage

select
           s.session_id,

           db_name(s.database_id) DB,

           s.login_time,

           s.host_name,

           s.program_name,

           s.login_name,

           s.cpu_time,

           s.memory_usage,

           s.total_scheduled_time,

           s.total_elapsed_time,

           s.endpoint_id,

           s.last_request_start_time,

           s.last_request_end_time,

           s.reads,

           s.writes,

           s.logical_reads,

           s.is_user_process,

           s.row_count,

           s.open_transaction_count,

           t.text as [command]

from sys.dm_exec_sessions s

inner join sys.dm_exec_connections c...

Generate script to recreate indexes

For me, this particular code to generate a script to recreate indexes has more practical use in a replication environment. 

For example, the default replication setting is to exclude the...

SSIS 2019 has arrived!

It is not a joke: SSIS is available for Visual Studio 2019 as a preview. Whoa, hold on. SQL Server 2019 hasn’t been released yet? But there’s already an...

Where should I clean my data?

As a follow-up to my blogs What product to use to transform my data? and Should I load structured data into my data lake?, I wanted to talk about where you...

Window Functions vs GROUP BYs

There are many options available for improving the performance of a query: indexes, statistics, configuration settings, etc… However, not all environments allow you to use those features (eg. vendor...

Can SQL Ids be used on an instance with Windows Authentication only?

tl;dr; Yes, but. It’s generally considered more secure to have your SQL Server instance set to Windows Authentication and not ... Continue reading

Interview with Andre Melancia

This is my second interview! This time with Andre who is a cat lover and great speaker! Here you can find the interview!

Join me for a PASS Summit Pre-Con

I am very excited to announce I will be delivering a pre-conference session on SQL Server Performance Tuning on November 5th at PASS Summit 2019. If you have ever...