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 (2024)

“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,

Automatically detect bad SQL. Static and dynamic analysis of SQL code

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,

How to convert XML to Spark Delta Tables and Parquet

The main option for converting XML on Spark to Parquet and Delta Tables is the Spark XML-Library. It is an external library that can be integrated with Spark but does…
Maciek January 25, 2018
Data Warehouse,

Why is concurrency overrated to measure performance of data warehouse platforms?

The difference between making a good and a bad decisions often comes down to the quality of the pre-defined metrics. If the metric is poor so will be the decision.When…
Uli Bethke January 11, 2018
Data Pipeline,

Using Apache Airflow to build reusable ETL on AWS Redshift

Building a data pipeline on Apache Airflow to populate AWS RedshiftIn this post we will introduce you to the most popular workflow management tool - Apache Airflow. Using Python as…
Uli Bethke January 1, 2018
XML,

Convert FpML XML to Oracle Data Modeler with Enterprise Flexter

Today we will show you how easy it is to convert FpML XML files to relational tables in an Oracle database with the enterprise version of Flexter. We then reverse…
Maciek December 22, 2017
XML,

A Library for XML Data Standards

First things first. Before we dive into the various data standards let's first explain what XML is. XML is short for Extensible Markup Language. It is used to describe data.…
Maciek November 3, 2017
XML,

Convert XML Metadata of Tableau Workbooks (TWB) to Text

In this walkthrough, we will demonstrate the processing of tableau workbooks using Flexter. We will then load the output into Tableau to get an under the hood view of the…
Maciek October 31, 2017