SQL Interviewing FAQs
Ace your interview with these essential SQL interview FAQs. Get familiar with typical questions and concepts to impress employers.
Hristo Hristov is a seasoned data professional with 10+ years of experience spanning the intersection of data engineering and smart manufacturing solutions. Since 2017, he has specialized in implementing advanced analytics solutions for bridging the IT/OT gap.
A technical writer with over 80 published articles on data and AI technologies, Python development, and cloud solutions. Passionate about transforming complex data into business value through innovative applications of Azure Data Platform, Python, IoT solutions, databases, and other cloud technologies.
Currently applying Industry 4.0 best practices, focusing on IoT connectivity, and implementing data and AI systems in manufacturing. Hristo holds a degree in Data Science and several Microsoft certifications covering SQL Server, Power BI, and related technologies.
- MSSQLTips Awards
- Achiever Award (75+ tips) - 2026
- Rookie of the Year - 2021
- Author Contender - 2022/2023/2024/2025
SQL Career FAQ
Get comprehensive answers in our SQL career FAQs. Learn what you need to succeed in SQL-related job roles.
SQL Programming FAQs
Get answers to your questions with our SQL programming FAQs. Learn about statements, queries, and the basics of SQL.
SQL FAQs
Learn the basics of SQL and find answers to frequently asked questions about this essential database language.
Python Performance News – Benchmark of Python Drivers for SQL Server
Explore the latest Python performance news by comparing SQL Server drivers to find the most efficient option for your projects.
Getting Started with mssql-python for Data Developers
mssql-python is a Python driver for Microsoft SQL family of databases using the Direct Database Connectivity (DDBC) that enables direct connections to SQL Server without requiring an external driver manager like ODBC is required for pyodbc.
Microsoft Fabric and MQTT for Real-Time IoT Data Ingestion and Analytics
Explore how Microsoft Fabric integrates real-time data with MQTT for efficient data analysis and engineering.
Melissa Data Quality Services for SQL Professionals
Explore Melissa Data quality services to enhance your data products with reliable verification and enrichment solutions.
Power BI – Download, Install and Create Your First Report
In this article, we look at how to get the Power BI download, install, and build a report in a step by step tutorial.
Invoke REST API Endpoint from SQL Server 2025
Explore how to use REST API in SQL Server 2025 to enhance data integration and make the most of external data access.
JSON Data Extract from SQL Server 2025
Discover techniques to extract JSON data in SQL, handling complex data types with ease in SQL Server 2025.
XML Data Extraction from SQL Server 2025
Explore XML extraction techniques in SQL Server 2025. Understand how to work with XML elements and attributes effectively.
Data Pipeline for IoT Data Ingestion to SQL Server 2025
Learn to use features in SQL Server 2025 to make efficient query compilations and build a scalable solution for a data pipeline for IoT data.
Getting Started with Bayesian Modeling
This tip explores predicting air pollution based on ambient temperature, humidity, and pressure using a Bayesian Model using Python.
Data Extraction from XML to JSON in SQL Server 2025
This article includes Python and SQL code to allow you to extract XML data from SQL Server and convert the output to JSON format.
Python Reference Guide for Data Professionals
This article is a compilation of many Python resources put together as a Python reference guide to quickly find topics of interest.
Python for Data Engineering with chardet, io and logging modules
Learn about Python for Data Engineering modules using chardet, io, and logging along with code snippet examples.
Python Modules for Developing Data Engineering Workloads
Python for data engineering using attrs, sqlalchemy, and pandas for creating scalable and robust pipelines.
Introduction to Melissa Alert Service
Melissa has taken data quality services further by offering a cloud-based platform that stores and validates data and alerts on data changes.
Getting Started Guide for SQL Server 2025
SQL Server 2025 is coming. Get prepared for this next version of SQL Server and download this free guide to get you started on the latest release.
Real-Time Data Plotting with Python for Scientific Applications
In this article we look at how to use Python for a real time plot of data as the data is being gathered for data visualization.
Aggregate Functions in Power BI – Running Total, Average, Max and Min
This article explains how to aggregate data for Power BI reports and provides examples of running totals, running averages, min, max, and more.
Enabling Critical Decision-Making with Valuable Data Insights
Learn about the Melissa Marketplace, a rich data catalog comprised of exceptionally accurate data products for industry and business needs.
Getting Started with Kiota for Building API Clients
Learn how to build an API using Microsoft Kiota and how popular programming languages like Python can be used to write the API.