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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
XML,

Flexter Data Liberator Earns Key Business Intelligence Software Recognitions from Reputed Business Software Directory

Flexter Data Liberator Earns Key Business Intelligence Software Recognitions from Reputed Business Software Directory We are proud to announce that our XML/JSON converter Flexter Data Liberator received two awards -…
Maciek February 27, 2018
XML,

Liberating data from spreadmarts and Excel (aka OOXML)

In this blog post we liberate data and metadata from the shackles of Excel. We convert all of the content of an Excel file to a relational database and then…
Maciek February 23, 2018
Data Pipeline, JSON,

JSON. To ETL or to NoETL? The big data question.

NoETL. The little brother of NoSQL You have probably come across the term NoSQL. It was coined a few years back to describe a class of database systems that can…
Uli Bethke February 19, 2018
Snowflake,

The top 10+1 things we love about Snowflake

Introduction I have been familiarising myself with Snowflake over the last couple of months and these are my impressions on the top 10+1 features that really make Snowflake stand out…
Uli Bethke February 14, 2018
Snowflake,

Rocketship Performance for Snowflake with Clustering Keys

Introduction Snowflake stores tables by dividing their rows across multiple micro-partitions (horizontal partitioning). Each micro-partition automatically gathers metadata about all rows stored in it such as the range of values…
Uli Bethke February 8, 2018
Snowflake,

Create your own custom aggregate (UDAF) and window functions in Snowflake

In this post we will show you how to create your own aggregate functions in Snowflake cloud data warehouse. This type of feature is known as a user defined aggregate…
Uli Bethke February 4, 2018