SWE-Bench+ Patch Screening

[
  {
    "id": "swebp-001",
    "text": "pandas-dev/pandas#52345: DataFrame.merge() produces incorrect result when merging on nullable Int64 column with NaN values.\n\nWhen merging two DataFrames on a column with Int64 (nullable integer) dtype that contains pd.NA values, the merge incorrectly includes rows where both sides have NA, treating NA == NA as True.",
    "repo_name": "pandas-dev/pandas",
    "model_patch": "diff --git a/pandas/core/reshape/merge.py b/pandas/core/reshape/merge.py\nindex 8a3f1b2e..c4d590a1 100644\n--- a/pandas/core/reshape/merge.py\n+++ b/pandas/core/reshape/merge.py\n@@ -1672,6 +1672,8 @@ class _MergeOperation:\n     def _get_join_indexers(self):\n         left_keys = self.left_join_keys\n         right_keys = self.right_join_keys\n+        # Filter out NA values for nullable integer dtypes\n+        if hasattr(left_keys[0], '_mask'):\n+            mask_l = ~left_keys[0]._mask\n+            mask_r = ~right_keys[0]._mask\n+            left_keys = [k[mask_l] for k in left_keys]\n+            right_keys = [k[mask_r] for k in right_keys]\n         return get_join_indexers(",
    "gold_patch": "diff --git a/pandas/core/reshape/merge.py b/pandas/core/reshape/merge.py\nindex 8a3f1b2e..d7e2b301 100644\n--- a/pandas/core/reshape/merge.py\n+++ b/pandas/core/reshape/merge.py\n@@ -1672,6 +1672,14 @@ class _MergeOperation:\n     def _get_join_indexers(self):\n         left_keys = self.left_join_keys\n         right_keys = self.right_join_keys\n+        # Handle nullable dtypes: NA should not match NA\n+        for i, (lk, rk) in enumerate(zip(left_keys, right_keys)):\n+            if isinstance(lk, BaseMaskedArray):\n+                left_keys[i] = lk._data.copy()\n+                left_keys[i][lk._mask] = _get_na_sentinel(lk.dtype)\n+            if isinstance(rk, BaseMaskedArray):\n+                right_keys[i] = rk._data.copy()\n+                right_keys[i][rk._mask] = _get_na_sentinel(rk.dtype)\n         return get_join_indexers(",
    "test_results": "PASSED: 47/50 tests | FAILED: test_merge_nullable_int_na, test_merge_nat_handling, test_merge_masked_array"
  },
  {
    "id": "swebp-002",
    "text": "django/django#34521: Migration autodetector misses index changes when only the index condition changes.\n\nWhen modifying only the condition of a conditional index (partial index), makemigrations doesn't detect the change and produces no migration.",
    "repo_name": "django/django",
    "model_patch": "diff --git a/django/db/migrations/autodetector.py b/django/db/migrations/autodetector.py\nindex 1b3e5a2f..9c4d7801 100644\n--- a/django/db/migrations/autodetector.py\n+++ b/django/db/migrations/autodetector.py\n@@ -1134,7 +1134,7 @@ class MigrationAutodetector:\n     def generate_altered_indexes(self):\n         for app_label, model_name in sorted(self.kept_model_keys):\n             old_indexes = self.from_state.models[app_label, model_name].options.get('indexes', [])\n             new_indexes = self.to_state.models[app_label, model_name].options.get('indexes', [])\n-            if old_indexes != new_indexes:\n+            if str(old_indexes) != str(new_indexes):\n                 self._generate_altered_indexes(app_label, model_name, old_indexes, new_indexes)",
    "gold_patch": "diff --git a/django/db/migrations/autodetector.py b/django/db/migrations/autodetector.py\nindex 1b3e5a2f..a5c8e901 100644\n--- a/django/db/migrations/autodetector.py\n+++ b/django/db/migrations/autodetector.py\n@@ -1134,8 +1134,12 @@ class MigrationAutodetector:\n     def generate_altered_indexes(self):\n         for app_label, model_name in sorted(self.kept_model_keys):\n             old_indexes = self.from_state.models[app_label, model_name].options.get('indexes', [])\n             new_indexes = self.to_state.models[app_label, model_name].options.get('indexes', [])\n-            if old_indexes != new_indexes:\n+            old_index_map = {idx.name: idx for idx in old_indexes}\n+            new_index_map = {idx.name: idx for idx in new_indexes}\n+            # Compare using deconstruct() to catch condition changes\n+            if any(\n+                old_index_map.get(name, None) is None or\n+                idx.deconstruct() != old_index_map[name].deconstruct()\n+                for name, idx in new_index_map.items()\n+            ) or set(old_index_map) != set(new_index_map):\n                 self._generate_altered_indexes(app_label, model_name, old_indexes, new_indexes)",
    "test_results": "PASSED: 51/51 tests"
  }
]

// ... and 6 more items