Aggregation joins

CHANGELOG.md

@@ -1,7 +1,7 @@
 # Changelog
 
 ## [Unreleased]
-
+-   [ENH] Add `include_join_positions` parameter to `conditional_join`; added limited support for join aggregations via the `join_agg` function. - Issue #1497 @samukweku
 -   [ENH] Added `rle_id` function for run-length encoding IDs - Issue #1435 @emmanuel-ferdman
 
 ## [v0.32.3] - 2025-12-11

janitor/functions/__init__.py

@@ -35,7 +35,7 @@
 from .collapse_levels import collapse_levels
 from .complete import complete
 from .concatenate_columns import concatenate_columns
-from .conditional_join import conditional_join, get_join_indices
+from .conditional_join import conditional_join, get_join_indices, join_agg
 from .convert_date import (
     convert_excel_date,
     convert_matlab_date,
@@ -156,6 +156,7 @@
     "impute",
     "jitter",
     "join_apply",
+    "join_agg",
     "label_encode",
     "limit_column_characters",
     "min_max_scale",