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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…
Maciek 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
Data Lineage,

Databricks Data Lineage – API, Tables, Unity Catalog

In this blog post, I’m taking the Databricks data lineage feature for a test ride. Let’s see what it can do and where you might need to rely on a…
Uli Bethke January 6, 2025
XML,

XML to Redshift – Parsing, Loading, & Schema Tips (Guide)

Working with XML data in Amazon Redshift feels like running a marathon in flip-flops—clunky, frustrating, and unsupported at every turn. Unlike its cousin, PostgreSQL, which offers an XML data type,…
Maciek January 2, 2025
SQL,
XML to database conversion

XML to Database Converter – Tools, Tips, & XML to SQL Guide

Manually converting XML to a database sucks. If you’re anything like me, you’ve probably burned countless wasted hours wrestling with deeply nested XML and data mappings, misinterpreted XML attributes and…
Maciek December 4, 2024
Data Lineage,

Master Snowflake Data Lineage – Features, Tools & Best Practices

What is Snowflake data lineage? Imagine you’ve just touched down in a bustling, unfamiliar city you’re eager to explore. You step outside your hotel and realise you have no idea…
Uli Bethke November 27, 2024
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”? 😁 Where you find nested CTEs (Common Table Expressions), stacked like…
Uli Bethke November 3, 2024
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