PrepareStatement(CHAR_DEL_NONEXISTENT_CHARACTER_GROUP_MEMBERS,"DELETE FROM group_member WHERE NOT EXISTS (SELECT guid FROM characters WHERE guid=memberGuid)");
PrepareStatement(CHAR_DEL_LEADERLESS_GROUPS,"DELETE FROM groups WHERE NOT EXISTS (SELECT guid FROM characters WHERE guid=leaderGuid)");
PrepareStatement(CHAR_DEL_TINY_GROUPS,"DELETE FROM groups WHERE guid NOT IN (SELECT guid FROM group_member GROUP BY guid HAVING COUNT(guid) > 1)");
PrepareStatement(CHAR_DEL_NONEXISTENT_GROUP_MEMBERS,"DELETE FROM group_member WHERE guid NOT IN (SELECT guid FROM groups)");
PrepareStatement(CHAR_DEL_NONEXISTENT_GROUP_INSTANCES,"DELETE FROM group_instance WHERE guid NOT IN (SELECT guid FROM groups)");