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
SQL,

Data Exploration with Window Functions on Redshift

We have already introduced the main concept, syntax and simple examples of window functions applied to practical problems. In this post, we will go through some more advanced window functions…
Uli Bethke July 26, 2017
XML,

Convert XML to AWS ATHENA

Convert XML to Text. Load to S3. Query with Athena In this walk-through, we will demonstrate the process of loading XML data into Athena – a query engine on AWS.…
Maciek July 22, 2017
SQL,

Introduction to Window Functions on Redshift

Benefits of Window Functions Window functions on Redshift provide new scope for traditional aggregate functions and make complex aggregations faster to perform and simpler to write. Window functions also allow…
Uli Bethke July 11, 2017
XML,

[Video] Convert XML to Excel

Converting XML to Excel without writing any Code In this video we will show you how Flexter's powerful XML Converter and Excel work together to unlock insights hidden in XML.…
Maciek July 11, 2017
Data Warehouse,

What are the Benefits of Graph Databases in Data Warehousing?

RDBMS and Graphs Relational databases are the work horse for storing and processing data. They are the poster boy of the data industry and have been going strong for almost…
Uli Bethke June 12, 2017
XML,

Eight things you need to know about ISO 20022 XML Messages

In this post we have summarised eight important facts about ISO 20022 XML messages. At the end of the post we show you how can automate the conversion of large…
Maciek May 22, 2017