Using the Sequence Object to Generate Reference Numbers

The SEQUENCE object was added to T-SQL in SQL Server 2012. It’s reasonably well known to DBAs, but less so...

What is Transparent Data Encryption?

Transparent Data Encryption (TDE) was introduced in SQL 2008 as a way of protecting “at rest” data. It continues to...

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