Planviz on The Lars Breddemann Blog

Why are your scalar UDFs slow? (mine aren't)

Mon, 09 Nov 2020 07:29:53 +0000

What is this about? #

In his blog post Why are scalar UDFs so slow? Jörg Brandeis wonders why user defined scalar functions (scalar UDFs) are slow compared to plain SQL. This is an important question since UDFs would make for very convenient development objects. SQL could be a lot easier to read and maintain if one could put complex or often reused computations into an UDF and just use this in queries, procedures and BW transformations.

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.

One in a Million

Sat, 08 Feb 2020 03:45:03 +0000

Q&A forums can be a treasure trove of interesting questions that turn out to have counter-intuitive answers.

In “Why does select statement taking too long when primary key is present?” the OP made an interesting observation:

Get your data running simple

Tue, 26 May 2015 14:00:15 +0000

SAP runs simple.

And SAP HANA also runs simple.

Down to the very internal coding this mantra has been followed.

And not just simple, but actually easy and here’s the proof - right out of the SAP HANA JoinEngine :lol:

Show me the timelines, baby!

Wed, 19 Dec 2012 14:00:26 +0000

Based on revision 46 (SPS 5) of SAP HANA Studio and Database

Hello once again!

While reading through the recently released SPS 05 RKT material (here) (that is, IF you have access to this RKT material), specifically the “What’ New Admin & Monitoring” document I found that the authors mentioned that the plan visualization feature we got in SPS 04 had been improved by adding an execution timeline to the display.