Data-Modeling on The Lars Breddemann Blog

Answers Pinboard

Mon, 19 Dec 2022 04:33:45 +0000

Apart from writing blog posts I have written answers to many questions on several Q&A sites like StackOverflow and SAP Community. Some of those answers received good feedback and/or the answer surprised me once I worked it out.

Find the ONE ... or the other

Mon, 27 Apr 2020 04:05:27 +0000

In his recent blog post " Code Pushdown"Paul Hardy, a long-time SAP community contributor described his first foray into HANA SQLScript programming.

Paul picked a very ABAP-y problem to solve:
Finding records with fallback to a default value.

Matchmaker - quick quick?

Thu, 26 Mar 2020 05:07:37 +0000

In Matchmaker, I developed a solution to a not-so-obvious problem.

The solution worked and delivered the right answer - finding documents where the line items match to a certain degree the line items of a reference document.

Matchmaker

Thu, 26 Mar 2020 05:07:31 +0000

SQL is an easy language to learn. A few commands to learn ( SELECT/FROM/WHERE/GROUP BY) and you are good to go.

One downside of the simple syntax and small vocabulary is that it can lead many SQL users to the assumption that these building blocks are all that can be expressed with SQL.

The time is now, isn't it?

Tue, 28 Jan 2020 23:27:00 +0000

One of the funny things one can learn when living with South Africans is their concept of time.
" Now now", " Just now" or " now" do mean very different things and can confuse the rest of the world terribly.
For an in-depth explanation don’t hesitate to contact your local Springbok or check this nice online article: South African Time explained: Just Now versus Now Now.

Conditionally unique

Fri, 22 Mar 2019 04:37:32 +0000

A common requirement for SQL DB modeling is to have something that could be called conditional unique constraint.
The idea is that certain combinations of column values should only occur once if at all, while other combinations are allowed to occur in any number.