How to Explode Arrays with Presto

How to Explode Arrays with Presto

Find out how to give each element of an array its own row

  • #SQL
  • #HowTo
How to Join DataFrames with PySpark

How to Join DataFrames with PySpark

Learn how to use the join() DataFrame method

  • #Python
  • #HowTo
Tableau Data Blending Saved Me Two Days' Work!

Tableau Data Blending Saved Me Two Days' Work!

Using a data blend to add metrics to your dashboard

  • #Tableau
Sketch Before You Build

Sketch Before You Build

Going back to basics with this month's SWD challenge

  • #SWDchallenge
  • #Tableau
How to Aggregate Data with PySpark

How to Aggregate Data with PySpark

Learn how to group your data and create summaries in PySpark

  • #Python
  • #HowTo
How to Query Data with PySpark

How to Query Data with PySpark

Learn the basics of selecting columns as well as filtering rows

  • #Python
  • #HowTo
What is PySpark and Why Should I Use It?

What is PySpark and Why Should I Use It?

An overview of how PySpark works and how it could help you

  • #Python
How to Label Measure Values and Names in Tableau

How to Label Measure Values and Names in Tableau

A step-by-step guide to labelling your measures

  • #HowTo
  • #Tableau
How to Make Label Colours Dynamic in Tableau

How to Make Label Colours Dynamic in Tableau

A guide to updating label colours based on their values

  • #Tableau
  • #HowTo
Critique Then Re-create

Critique Then Re-create

Re-creating a chart which shows progress against targets

  • #SWDchallenge
  • #Excel