Hello, my name is Bobby. Welcome to my Dev Blog

I am a professional DevOps Engineer with a demonstrated history of working in the internet industry. I am an avid Linux lover and supporter of the open-source movement philosophy.

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Introduction I have a few Raspberry Pi devices at home and I wanted to be able to collect the data from their temperature sensors on a regular interval and store that data in a Postgres database. Later on, I could use that data for some analytics tog...

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Bobby Iliev
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Introduction This is a self-contained demo using Materialize. This demo would show you how to use Materialize to join MySQL and Postgres in a live materialized view. For this demo, we are going to monitor the orders on our demo website and generate e...

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Bobby Iliev
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Introduction If you have ever worked with MySQL and had to create your table structure, you have probably noticed that the DATETIME and TIMESTAMP data types are quite similar at a first glance as they have a lot of similarities. In this tutorial, we ...

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Bobby Iliev
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Introduction In this tutorial, we are going to build a web application using AdonisJS and integrate it with Materialize to create a real-time dashboard based on streaming data using standard SQL. Materialize lets you define views you want to maintain...

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Bobby Iliev
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Introduction In this quick tutorial, you will learn how to find the duplicate values in a SQL table with a single SQL query. Let's say that we have a table called users with the following data: SELECT username,email FROM users; +----------+----------...

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Bobby Iliev
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Introduction If you've ever used SQL, you probably know that UNIONs can be quite confusing at first. In this quick post we are going to learn what the difference between UNION and UNION ALL is! Difference between UNION and UNION ALL The main thing to...

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Bobby Iliev
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Introduction In this tutorial, I will show you how Materialize works by using it to run SQL queries on continuously produced nginx logs. By the end of the tutorial, you will have a better idea of what Materialize is, how it's different than other SQL...

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Bobby Iliev
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Introduction If you've ever used SQL, you probably know that JOINs can be very confusing. In this quick post we are going to learn what the difference between JOIN and INNER JOIN is! Difference between JOIN and INNER JOIN Actually, INNER JOIN AND JOI...

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Bobby Iliev
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Introduction In some cases if you have a really large .sql file, it is best to import it via the command line. You might need to do this in case that you are using a tool like PHPmyAdmin, which more often than not, has a certain limit that the file t...

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Bobby Iliev
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Introduction In this quick tutorial, you will learn how to add a default value to an existing column in MySQL. Prerequisites You always need to be careful, when changing the structure of an existing column in your database. Make sure to always have b...

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Bobby Iliev
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