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Matthew McGiffen DBA

I started my career in IT as a developer with Visual Basic, C# and ASP working with SQL Server backends. For the last ten years though I’ve focused on the SQL Server side of things. Currently I’m working for a leading software vendor for the financial industry as a DBA, doing a mixture of development and data architecture. If I have a speciality it is in making things run faster.

Archives: October 2017

Implementing Temporal Tables Where You Have Existing Data

In my post about auditing tools in SQL Server I mentioned a few tools we have at our disposal for capturing the change history of data.

One was Change Data Capture which I want into a bit more detail about in Setting up Change Data Capture (CDC)

I also referred… Read more

3 comments, 2,382 reads

Posted in Matthew McGiffen DBA on 24 October 2017

Bug with STATISTICS TIME?

I love the STATISTICS IO and STATISTICS TIME commands. They are such a powerful and easy way to be able to measure improvements when performance tuning (Measuring SQL Query Performance).

You have to be a little bit wary though, there are a few places where they don’t report… Read more

0 comments, 320 reads

Posted in Matthew McGiffen DBA on 17 October 2017

Avoid “Constants” in T-SQL

Unlike some other languages, T-SQL doesn’t have the concept of a constant.

As good coders, we’ve all at some point tried to use a SQL variable to hold a constant value within a stored procedure, in order to make our code both more readable and maintainable.

I’ll give you an… Read more

10 comments, 3,144 reads

Posted in Matthew McGiffen DBA on 10 October 2017

Setting up Change Data Capture (CDC)

As mentioned in my post Auditing Data Access in SQL Server for GDPR Compliance CDC can be a useful tool for capturing a change history for specific data – which is something we might be thinking about a bit more now the GDPR is heading our way.

It’s pretty straightforward… Read more

1 comments, 245 reads

Posted in Matthew McGiffen DBA on 3 October 2017