Full Join with Diagnostics

Performs a full join and automatically prints diagnostic information.

Usage

full_join_spy(x, y, by, verbose = TRUE, .quiet = FALSE, backend = NULL, ...)

x: A data frame (left table).
y: A data frame (right table).
by: A character vector of column names to join by.
verbose: Logical. If TRUE (default), prints diagnostic summary.
.quiet: Logical. If TRUE, suppresses all output (overrides verbose). Useful for silent pipeline operations. Use last_report() to access the diagnostics afterward.
backend: Character or NULL. The join backend to use. If NULL (default), auto-detects from input class: data.table inputs use data.table, tibble inputs use dplyr, otherwise base R merge(). Explicit values: "base", "dplyr", "data.table".
...: Additional arguments passed to the underlying join function.

The joined data frame with a "join_report" attribute.