no tag searching, add index to db.py

anki/db.py

@@ -25,7 +25,8 @@ except ImportError:
 sqlite.enable_shared_cache(True)
 
 from sqlalchemy import (Table, Integer, Float, Column, MetaData,
-                        ForeignKey, Boolean, String, Date, UniqueConstraint)
+                        ForeignKey, Boolean, String, Date,
+                        UniqueConstraint, Index)
 from sqlalchemy import create_engine
 from sqlalchemy.orm import mapper, sessionmaker, relation, backref, \
      object_session as _object_session
@@ -48,8 +49,7 @@ def newWarn(*args, **kwargs):
     oldWarn(*args, **kwargs)
 util.warn = newWarn
 
-
-
+# shared metadata
 metadata = MetaData()
 
 # this class assumes the provided session is called with transactional=False

anki/deck.py

@@ -1188,6 +1188,12 @@ from cards, facts, models where
 cards.factId == facts.id and facts.modelId == models.id
 %s""" % where)
 
+    def cardsWithNoTags(self):
+        return self.s.column0("""
+select cards.id from cards, facts where
+cards.tags = "" and facts.tags = ""
+and cards.factId = facts.id""")
+
     def allTags(self):
         "Return a hash listing tags in model, fact and cards."
         return list(set(parseTags(",".join([x[1] for x in self.tagsList()]))))