SQL Server Rookie Mistakes

A quick elementary post which is my entry to this months’ T-SQL Tuesday entry hosted by a good friend SQLDoubleG http://www.sqldoubleg.com/2017/07/03/tsql2sday-92-lessons-learned-the-hard-way/.


We are here to talk about mistakes we used to make. There is one mistake that I am going to discuss and is something that I used to do 10 years ago, obviously I do not do this anymore.

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SQL Server Memory Metrics

A very quick post for today, recently I have been working on some code to gather metrics around SQL Server memory, more specifically, how much memory is on your server, your total / target memory and PLE. (If you want to know more about total vs target see this link: https://blobeater.blog/2017/03/01/sql-server-target-vs-total-memory/)

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Azure Robots – Index Performance Recommendation

They are watching me and my Azure SQL Database and recently I noticed a low impact performance recommendation was made. Naturally I became very interested. Within your database (when in the portal) under operations you may notice something similar to the below:

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AD Authentication and Azure SQL Database

Setting up AD authentication with Azure SQL Database sounds simple, it is assuming you plan carefully. I did run into issues but once rectified it felt great using AD authentication in Azure rather than just SQL logins.

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Setting SQL Server Max Memory Dangerously Low

Hopefully you know the relevance and importance of setting a correct value for max memory on your SQL Server. By default it will be the value 2147483647 which is not a random number but the 8th Mersenne prime! In a computing sense it is the maximum positive value for a 32-bit signed binary integer and that is big.

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Extended Events – I am dangerous (sometimes)

I did a dangerous thing, and I want to make sure that YOU DO NOT do the same.

I was creating a couple of extended events sessions and was playing around with some actions. I ended up with the following code where I was after a guy called Shane:

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Adaptive Query Processing – Interleaved Execution

A quick blog post to start the day, If you remember a few months ago I blogged about SQL Server vNext https://blobeater.blog/2017/02/03/sql-server-vnext/, more specifically around the Adaptive Query Processing feature.

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