Ignoring Records for Certain Criteria Using SQL Queries

Counting Events Where a User is Not Present: A MySQL Query Problem

Counting Character Occurrences for Each Pandas Dataframe Record Using Regex and Flags

How to Fix MySQL COUNT IF Not Working and Giving All 0s with LEFT JOIN and Conditional Counting

Counting Missing Values from Two Columns in a R Data Frame

Counting Occurrences in One Variable Based on Another When Dealing with Duplicated Values in R Programming Language

Understanding the SQL Count Function: Why COALESCE Won't Work in MySQL

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

Using ORDER BY with LIMIT for Complex Queries: Strategies and Best Practices

Selecting and Counting Specific Values from a Pandas DataFrame Using Cumulative Sums and Loops