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SQL Challenges,

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 you to demonstrate your understanding of islands in a time series data set. Whoever submits the correct and most performant query will be featured in …
Uli Bethke November 7, 2023
Flexter,

Deep dive on XML converters, XML conversion tools and XML conversion projects

Are you looking for an XML converter or XML conversion tool for enterprise use cases? Are you looking for advice and tips and tricks for an XML conversion project? If…
charlie 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
FlowHigh,

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
FlowHigh, FlowHigh,

From Code to Clarity: Visualizing SQL code for Documentation and Debugging

In this post we will show you how you can create a visual diagram of your SQL code. We will use the FlowHigh SQL visualiser to achieve this. FlowHigh is…
Uli Bethke May 29, 2023

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Oracle,

ODI snippets: Purge Log and shrink space

Get our e-books Discover the Oracle Data Integrator 11g Repository Data Model and Oracle Data Integrator Snippets and Recipes We all know that we should purge the ODI log on…
Uli Bethke November 17, 2009
analytic functions,

Comparative Window Functions: Proposed Extensions to Analytic Functions

I promise that this will be the last post on analytic functions this month; but I came across this proposal to extend analytic functions with a comparative window function on…
Uli Bethke November 16, 2009
analytic functions,

SQL quiz revisited: ROW_NUMBER, LAST_VALUE, FIRST_VALUE and the SQL knights value problem.

Thank you all for your entries to the recent quiz. The guys from Packt should be shortly sending out the e-books to the winners.Today I will walk you through some…
Uli Bethke November 15, 2009
Irish BI SIG,

Irish BI SIG: Mark Rittman to present on Essbase, OBIEE, Hyperion Planning

Don't miss Mark Rittman's presentations on Essbase and OBIEE integration and a technical introduction to Hyperion Planning. There is still time to register. As usual the event will take place…
Uli Bethke November 7, 2009
Best Practice,

How to prepare for Data Mining

There is a new article by Eric King of The Modeling Agency on How to Prepare for Data Mining. It has some interesting points on various aspects that you would…
Uli Bethke November 6, 2009
Books,

SQL Quiz: Win two e-books (Essbase & BPEL)

We'll do something completely different today and have a quiz. And you can even win something. Thanks to the guys at Packt Publishing I have two e-books to giveaway. Oracle…
Uli Bethke November 4, 2009