已知A，B两表，B表是A表aid = 1 构成的子表。现通过B表查询A表中哪些aid同时全部包含了B表中所有的bid。（参考数据库除运算）
表A：
表B：
查询结果：
查询SQL代码：
SELECT DISTINCT A2.AID FROM A AS A2 WHERE A2.AID NOT IN(
SELECT B2.BAID FROM (
SELECT A.AID AAID,A.BID ABID,B1.AID BAID,B1.BID BBID FROM (SELECT A1.AID,B.BID FROM ((SELECT DISTINCT A.AID FROM A) AS A1 CROSS JOIN B) ) AS B1
LEFT JOIN A USING(AID,BID)
) AS B2 WHERE B2.AAID IS NULL AND B2.BAID IS NOT NULL )
附录：
表A：
-- ----------------------------
-- Table structure for `a`
-- ----------------------------
DROP TABLE IF EXISTS `a`;
CREATE TABLE `a` (
`aid` int(11) NOT NULL,
`bid` int(11) NOT NULL,
PRIMARY KEY (`aid`,`bid`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
-- ----------------------------
-- Records of a
-- ----------------------------
INSERT INTO `a` VALUES ('1', '1');
INSERT INTO `a` VALUES ('1', '2');
INSERT INTO `a` VALUES ('1', '3');
INSERT INTO `a` VALUES ('1', '4');
INSERT INTO `a` VALUES ('2', '1');
INSERT INTO `a` VALUES ('2', '2');
INSERT INTO `a` VALUES ('3', '1');
INSERT INTO `a` VALUES ('3', '2');
INSERT INTO `a` VALUES ('3', '3');
INSERT INTO `a` VALUES ('3', '4');
INSERT INTO `a` VALUES ('3', '5');
INSERT INTO `a` VALUES ('4', '1');
INSERT INTO `a` VALUES ('4', '2');
INSERT INTO `a` VALUES ('4', '3');
INSERT INTO `a` VALUES ('4', '4');
表B：
-- ----------------------------
-- Table structure for `b`
-- ----------------------------
DROP TABLE IF EXISTS `b`;
CREATE TABLE `b` (
`AID` int(11) NOT NULL,
`BID` int(11) NOT NULL,
PRIMARY KEY (`AID`,`BID`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
-- ----------------------------
-- Records of b
-- ----------------------------
INSERT INTO `b` VALUES ('1', '1');
INSERT INTO `b` VALUES ('1', '2');
INSERT INTO `b` VALUES ('1', '3');
INSERT INTO `b` VALUES ('1', '4');