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
Snowflake,

Comparing Snowflake cloud data warehouse to AWS Athena query service.

In this blog post we look at the commonalities and differences between the Snowflake cloud data warehouse and the AWS Athena query service. AWS Athena is built on top of…
Uli Bethke November 27, 2018
Data Pipeline,

The future of ETL and the limitations of data virtualisation and NoETL.

Data has limited value if we don’t transform, integrate, model (either data modelling and building predictive models) or cleanse it. Collecting raw data for no apparent reason or business case…
Uli Bethke October 11, 2018
Snowflake,

Sampling in Snowflake. Approximate Query Processing for fast Data Visualisation

Introduction Making decisions can be defined as a process to achieve a desirable result by gathering and comparing all available information.The ideal situation would be to have all the necessary…
Uli Bethke August 2, 2018
SQL,

Converting Financial Information eXchange XML (FIXML) to MS SQL Server

FIX is a messaging standard used for trades in the financial services industry. The FIX Trading Community is the independent body behind the FIX messaging standard. FIX messages are encoded…
Maciek June 5, 2018
JSON, JSON,

Converting and analysing Rugby JSON data to Oracle Data Visualization Desktop

Here is another post that will show how you can work with the output from Flexter to analyse your data. In this post we will show you how to convert…
Uli Bethke May 22, 2018
Snowflake,

Exploding polygons in Snowflake. KaBooom! Visualising Dublin property data in Tableau.

Introduction In this blog post we will show the power of Snowflake UDFs to prepare data for visualisation in Tableau. We take the Irish Census Data from the Central Statistics…
Uli Bethke May 14, 2018