Finding Continuous Occurrences of Characters in a String

Counting Dates in Past: Optimizing Your SQL Queries with Efficient Filtering

Retrieving Course Data Based on User Count: A Comprehensive Approach

Extracting Specific Years from a Table: A Guide to Date Functions and Boolean Logic in SQL

Using an "Or" Conditional in the `n_distinct` Function of Dplyr: A Flexible Approach to Summarize Counts for Multiple Conditions

Conditional Aggregation in SQL: Counting Zero Results with COUNT(*) Aggregate