Separate business logic from tables and avoid dynamic SQL
You want to apply your business logic to multiple tables in your DB but don’t want to use dynamic SQL? Good on you! Here’s how.
sql
Matchmaker – quick quick?
You’ve come up with a clever SQL to solve a problem but now you want to make it fast?
No worries! This post shows how I shaved off 50% runtime and memory by copy & paste.
Matchmaker
Finding alternative order-documents where the lineitems match a certain percentage of a reference document? In SQL? With no cursors? See how it’s done!
Be careful with dates and timestamps
Ever mixed timestamps and dates and wondered why your result wasn’t quite what you expected?
Find one possible answer to this in this blog post.
SAP Inside Track #sitMEL – Full Day Event in Melbourne
Looking for the content of Lars’ presentation from #sitMEL-2020? Look no further, it’s all here.
Types of NULL
In which I deal with non-obvious type conversion problems and NULLs.
Conditionally unique
How do implement unique constraints for only some of the table entries in SAP HANA.
New year, same issues and some tips.
Most folks working with SQL DBs for a while will likely come to see how beginners in this area struggle with “declaritive code” and “tell the DB what you want not how to do it” In my experience, this issue stems partly from the way SQL is tought – examples are often way too simplistic … New year, same issues and some tips.
SQL refactoring example
About a year ago I answered a question on the SAP Community Q&A site and have it on my posts-to-write list ever since to turn it into a blog post. I feel that I learn a lot from seeing applied examples of concepts and rules – for example from this great presentation from Kevlin Henney … SQL refactoring example
IF EXISTS would exist
A small function to implement the IF EXISTS option for DDL commands in SAP HANA.