SQL Notebook examples

SQL exercices

Employees
Boxes and warehouses

Einführung in die Datenanalyse mit SQL (Deutsch)

Charts

Chart library
Vertical bar chart, line chart, dots chart

More charts
Tree chart, slice chart, treemap

Logarithmic charts

Creating maps

Simplify maps

Color palettes

Design a dashboard

Advanced SQL

Formatting tables

Serialize and Deserialize

Moving average

Statistical functions

Fisher test

Analyzing REST API Data

Simple plagiarism detector

Sum preserving percentages

Chow segmentation

Multiple regression and the Longley data set

Math

Mathematical notation

Plots

Random cluster

Bisection interpolation

Graphics

Home made font tracing

Home made PostScript Type 3 fonts

Random dots in a square

Spiral

Clock

Pattern fill

Scribble fill

Periodic table of elements

3D rendering

Round polygons

The tiger image

Utilities

Adding new fonts

Translate PostScript code

How to use Linux on iPad to convert PNG to GIF

Sort function in PostScript

Persistance with IndexedDB

Plotter tests from PostScript to GCODE

Sylgram encoding for text similarity

Artwork

Random Optical 1

Random Optical 2

Random Optical 3

Random Optical 4

Random Optical 5

Random Optical 6

Random Dots 1

Swiss politics

Hochrechungstool für Volksabstimmungen

Reconstruction du panachage des votes aux municipales lausannoises 2026

Reconstruction du panachage des votes du deuxième tour aux municipales lausannoises 2026

Ständerat Europadebatte