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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
SQL,

Uses of the modulo operator: How Oracle mod can make your life easier.

You may ask, what the heck is modulo? Well, below is an easy to understand definition. "Modulo basically means keep taking the second number away from the first number. When…
Uli Bethke October 11, 2012
Oracle Data Integrator (ODI),

Best practice of organizing interfaces and data stores into projects and models in ODI

Get our e-books Discover the Oracle Data Integrator 11g Repository Data Model and Oracle Data Integrator Snippets and Recipes Have you ever wondered what the best way is to structure…
Uli Bethke October 3, 2012
Oracle Data Integrator (ODI),

Copying and moving objects between projects in ODI

Get our e-books Discover the Oracle Data Integrator 11g Repository Data Model and Oracle Data Integrator Snippets and RecipesOne of the really annoying things about ODI is that it is…
Uli Bethke September 18, 2012
Oracle Data Integrator (ODI),

Get a list of all of your ODI objects including the path in your project or model

Get our e-books Discover the Oracle Data Integrator 11g Repository Data Model and Oracle Data Integrator Snippets and RecipesBelow is a query that will retrieve all of the ODI objects…
Uli Bethke September 17, 2012
SQL,

LISTAGG with CLOB? String aggregation exceeding 4000 characters with XMLAGG.

We all know that the Oracle LISTAGG function does not support the CLOB datatype. In my opinion this is a severe limitation of LISTAGG (and BTW also of PIVOT and…
Uli Bethke April 23, 2012
Oracle Data Integrator (ODI),

OBIEE 11g Repository Documentation: Extracting metadata from the RPD

With OBIEE 11g there are two methods to extract metadata from the RPD. The first one uses the admintool.exe command to generate metadata. It was already around in OBIEE 10g.…
Uli Bethke March 8, 2012