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

Understanding Delimited Strings and Pattern Matching in PostgreSQL

Understanding Redshift's Behavior with Trailing Whitespace in Text Columns: Optimizing Query Performance Without Ignoring Significance

Finding All Non-Existent Account Values in Unnormalized Data Using SQL

Creating Date Ranges from Multiple Rows Based on a Single Date