Top Articles

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
XML, flexter, XML,

Converting GDTF XML standard to MySQL

In this post we will guide you through the easiest way of processing your XML data to a relational format on MySQL . We will be using Flexter to process…
Maciek May 3, 2020
Snowflake, Data Marketplace, flexter,

Geo and location analytics in action with OpenStreetMap and census data

Geo and location analytics in action with OpenStreetMap and census data In this blog post we integrate and analyse OpenStreetMap, Census, and Geo Data from Ireland. We will use Flexter…
Uli Bethke April 14, 2020
XML, flexter, XML,

Optimisation algorithms for converting XML and JSON to a relational format

Optimisation algorithms for converting XML and JSON to a relational format. Part 1 - Elevate Flexter, our data warehouse automation solution for the conversion of XML, JSON, industry data standards…
Maciek March 31, 2020
XML, flexter, XML,

Converting and Querying TransXChange XML to a database (Maria DB)

In this post we will convert the TransXChange XML standard to a relational format on MariaDB. We will query the output with SQL to show the bus schedule (pick up…
Maciek November 1, 2019
XML, flexter,

Converting DITA XML to a database (MySQL)

In this post we will convert the DITA XML standard used in Publishing. We will convert it to a MySQL database with Sonra’s data warehouse automation tool for XML, JSON,…
Maciek October 15, 2019
XML, flexter,

Converting HR Open Standard XML to SQL Server

In this post we will guide you through the fast proces of how to convert HR Open Standard XML to SQL Server. For this process we will use Sonra’s data…
Maciek August 27, 2019