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Data Lineage,

SQL Visualisation Guide – Query Diagrams, Lineage & ERD

Have you ever inherited the SQL codebase from someone else where it is in a “bit of a mess”? 😁 Sound familiar? Most data engineers and SQL developers have been there including myself—staring at a spaghetti-like web of queries, trying to untangle a chaotic SQL codebase. It’s a common nightmare. Traditionally, you had to fight …
Uli Bethke November 3, 2024
SQL,

SQL Challenge: Tackling the Island Problem in Time Series Data

Jump into our SQL Challenge! Today, we're exploring customer loyalty trends. Are you prepared to show off your SQL skills? About the quiz In this SQL pop quiz, we're challenging…
Uli Bethke November 7, 2023
XML,

XML Converters & Conversion – Ultimate Guide (2025)

“Urgent XML Conversion Project – Need by End of Week”. “Just Convert this XML to SQL Tables. Should be Simple!” Sound familiar?  From my experience, XML conversion projects follow the…
Kristijan Berta October 4, 2023
Snowflake,

7 guardrails against common mistakes that inflate Snowflake credit usage 

Dodge costly pitfalls Snowflake implementation has pioneered dozens of innovations in the data platform space. The long list includes separation of compute and storage, physical workload separation, data sharing, data…
Uli Bethke September 13, 2023
SQL,

Detect Bad SQL with Static & Dynamic Code Analysis – A Guide

Preventing Query Catastrophe with FlowHigh SQL Analyser Does the following sound familiar? As the wizard EsQuEl delved deep into the SQL code, he stumbled upon multiple instances where tables were…
Uli Bethke September 8, 2023

Recent Articles

All JSON Snowflake XML
SQL,

Oracle EXTRACT & EXTRACTVALUE for XML (Guide & Examples)

When you need to extract and/or query an Oracle database for XML data, there are two SQL functions that come to mind, ‘EXTRACT’ and ‘EXTRACTVALUE’. I’m going to delve into…
Maciek October 21, 2024
XML,
Best XML to CSV Converters Compared by Data Expert

Best XML to CSV Converters – Compared by Data Expert

You might be surprised that selecting the right XML to CSV converter doesn’t start with evaluating the tool itself or its features. It’s not about the tool. It is all…
Kristijan Berta October 16, 2024
JSON,

CSV vs JSON vs XML – The Best Comparison Guide 2025

We’ve all been there, going from spec to Wikipedia page to another spec to some other article on the topic trying to pick between CSV, XML, and JSON for the…
Maciek September 25, 2024
XML,

XSD to Database Schema Guide – Create SQL Tables Easily

Both databases and XML have a concept of schemas. In databases the schema is defined by Data Definition Language in XML it is defined by XML Schema Definition. Schemas whether…
Maciek September 5, 2024
XML,

Convert XML to CSV Like a Pro – Essential Tools & Methods

This blog post talks about everything you need to know to convert XML to CSV. From simple, flat XML to deeply nested XML with many branches we also cover two…
Maciek August 13, 2024
XML,

Complete Oracle XSD Guide – Register XSD & Validate XML

In this blog post we cover the most important aspects of working with XML Schema Definitions (XSD) in Oracle. Here is what you can expect from this article. We start…
Maciek August 2, 2024