Change Cache_tag_rowid to a partial index because we don't need to …

…query rows efficiently `where tag IS NULL` (#307) * Change `Cache_tag_rowid` to a partial index because we don't need to query rows efficiently `where tag IS NULL` * Fix formatting
grantjenks · Mar 3, 2024 · ebfa37c · ebfa37c
1 parent 9cd3816
commit ebfa37c
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/diskcache/core.py b/diskcache/core.py
@@ -2028,7 +2028,10 @@ def create_tag_index(self):
 
         """
         sql = self._sql
-        sql('CREATE INDEX IF NOT EXISTS Cache_tag_rowid ON Cache(tag, rowid)')
+        sql(
+            'CREATE INDEX IF NOT EXISTS Cache_tag_rowid ON Cache(tag, rowid) '
+            'WHERE tag IS NOT NULL'
+        )
         self.reset('tag_index', 1)
 
     def drop_tag_index(self):