Package index • joinspy

Pre-Join Diagnostics

Analyze tables before joining

join_spy(): Comprehensive Pre-Join Diagnostic Report
key_check(): Quick Key Quality Check
key_duplicates(): Find Duplicate Keys

Post-Join Diagnostics

Understand what happened after a join

join_explain(): Explain Row Count Changes After a Join
join_diff(): Compare Data Frame Before and After Join

Safe Join Wrappers

Joins with built-in diagnostics

join_strict(): Strict Join with Cardinality Enforcement
left_join_spy(): Left Join with Diagnostics
right_join_spy(): Right Join with Diagnostics
inner_join_spy(): Inner Join with Diagnostics
full_join_spy(): Full Join with Diagnostics
last_report(): Get the Last Join Report

Auto-Repair

Fix common key issues automatically

join_repair(): Repair Common Key Issues
suggest_repairs(): Suggest Repair Code

Advanced Analysis

Cardinality detection and multi-table chains

detect_cardinality(): Detect Join Relationship Type
check_cartesian(): Detect Potential Cartesian Product
analyze_join_chain(): Analyze Multi-Table Join Chain

S3 Methods

Methods for JoinReport objects (print, plot, summary)

print(<JoinReport>): Print Method for JoinReport
summary(<JoinReport>): Summary Method for JoinReport
plot(<JoinReport>): Plot Method for JoinReport

Logging & Audit

Log reports for reproducibility

log_report(): Log Join Report to File
set_log_file(): Configure Automatic Logging
get_log_file(): Get Current Log File

Helpers

is_join_report(): Check if Object is a JoinReport