Handling Non-Matching Data with SQL JOINs: Strategies for Predictable Results

Replacing Columns in a Data Frame Based on Another Data Frame Using Multiple Methods in R

Efficient Data Merge: A Step-by-Step Approach to Finding Common Sets of Multiple IDs Using R

Mastering String Matching in R with strsplit and Regular Expressions

Converting Long Format DataFrames to Wide Formats in R Using dplyr