Alternatives to Subqueries for Grouping by Count of Groups in Data Analysis

Optimizing Redshift SQL Performance for Filtering Values Using LIKE

Extracting Numerics from Strings in PostgreSQL 8.0.2 Amazon Redshift Using Regular Expressions

Calculating Customer Re-Order Percentage in SQL Using Lag Function and Case Logic.

Calculating User Retention with SQL and Amazon Redshift: A 7-Day Analysis Strategy