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DROP TABLE IF EXISTS `t_areainfo`;CREATE TABLE `t_areainfo` ( `id` int(11) NOT '0' AUTO_INCREMENT, `level` int(11) DEFAULT '0', `name` varchar(255) DEFAULT '0', `parentId` int(11) DEFAULT '0', `status` int(11) DEFAULT '0', PRIMARY KEY (`id`)) ENGINE=InnoDB AUTO_INCREMENT=65 DEFAULT CHARSET=utf8;

INSERT INTO `t_areainfo` VALUES ('1', '0', '中國', '0', '0');INSERT INTO `t_areainfo` VALUES ('2', '0', '華北區(qū)', '1', '0');INSERT INTO `t_areainfo` VALUES ('3', '0', '華南區(qū)', '1', '0');INSERT INTO `t_areainfo` VALUES ('4', '0', '北京', '2', '0');INSERT INTO `t_areainfo` VALUES ('5', '0', '海淀區(qū)', '4', '0');INSERT INTO `t_areainfo` VALUES ('6', '0', '豐臺(tái)區(qū)', '4', '0');INSERT INTO `t_areainfo` VALUES ('7', '0', '朝陽區(qū)', '4', '0');INSERT INTO `t_areainfo` VALUES ('8', '0', '北京XX區(qū)1', '4', '0');INSERT INTO `t_areainfo` VALUES ('9', '0', '北京XX區(qū)2', '4', '0');INSERT INTO `t_areainfo` VALUES ('10', '0', '北京XX區(qū)3', '4', '0');INSERT INTO `t_areainfo` VALUES ('11', '0', '北京XX區(qū)4', '4', '0');INSERT INTO `t_areainfo` VALUES ('12', '0', '北京XX區(qū)5', '4', '0');INSERT INTO `t_areainfo` VALUES ('13', '0', '北京XX區(qū)6', '4', '0');INSERT INTO `t_areainfo` VALUES ('14', '0', '北京XX區(qū)7', '4', '0');INSERT INTO `t_areainfo` VALUES ('15', '0', '北京XX區(qū)8', '4', '0');INSERT INTO `t_areainfo` VALUES ('16', '0', '北京XX區(qū)9', '4', '0');INSERT INTO `t_areainfo` VALUES ('17', '0', '北京XX區(qū)10', '4', '0');INSERT INTO `t_areainfo` VALUES ('18', '0', '北京XX區(qū)11', '4', '0');INSERT INTO `t_areainfo` VALUES ('19', '0', '北京XX區(qū)12', '4', '0');INSERT INTO `t_areainfo` VALUES ('20', '0', '北京XX區(qū)13', '4', '0');INSERT INTO `t_areainfo` VALUES ('21', '0', '北京XX區(qū)14', '4', '0');INSERT INTO `t_areainfo` VALUES ('22', '0', '北京XX區(qū)15', '4', '0');INSERT INTO `t_areainfo` VALUES ('23', '0', '北京XX區(qū)16', '4', '0');INSERT INTO `t_areainfo` VALUES ('24', '0', '北京XX區(qū)17', '4', '0');INSERT INTO `t_areainfo` VALUES ('25', '0', '北京XX區(qū)18', '4', '0');INSERT INTO `t_areainfo` VALUES ('26', '0', '北京XX區(qū)19', '4', '0');INSERT INTO `t_areainfo` VALUES ('27', '0', '北京XX區(qū)1', '4', '0');INSERT INTO `t_areainfo` VALUES ('28', '0', '北京XX區(qū)2', '4', '0');INSERT INTO `t_areainfo` VALUES ('29', '0', '北京XX區(qū)3', '4', '0');INSERT INTO `t_areainfo` VALUES ('30', '0', '北京XX區(qū)4', '4', '0');INSERT INTO `t_areainfo` VALUES ('31', '0', '北京XX區(qū)5', '4', '0');INSERT INTO `t_areainfo` VALUES ('32', '0', '北京XX區(qū)6', '4', '0');INSERT INTO `t_areainfo` VALUES ('33', '0', '北京XX區(qū)7', '4', '0');INSERT INTO `t_areainfo` VALUES ('34', '0', '北京XX區(qū)8', '4', '0');INSERT INTO `t_areainfo` VALUES ('35', '0', '北京XX區(qū)9', '4', '0');INSERT INTO `t_areainfo` VALUES ('36', '0', '北京XX區(qū)10', '4', '0');INSERT INTO `t_areainfo` VALUES ('37', '0', '北京XX區(qū)11', '4', '0');INSERT INTO `t_areainfo` VALUES ('38', '0', '北京XX區(qū)12', '4', '0');INSERT INTO `t_areainfo` VALUES ('39', '0', '北京XX區(qū)13', '4', '0');INSERT INTO `t_areainfo` VALUES ('40', '0', '北京XX區(qū)14', '4', '0');INSERT INTO `t_areainfo` VALUES ('41', '0', '北京XX區(qū)15', '4', '0');INSERT INTO `t_areainfo` VALUES ('42', '0', '北京XX區(qū)16', '4', '0');INSERT INTO `t_areainfo` VALUES ('43', '0', '北京XX區(qū)17', '4', '0');INSERT INTO `t_areainfo` VALUES ('44', '0', '北京XX區(qū)18', '4', '0');INSERT INTO `t_areainfo` VALUES ('45', '0', '北京XX區(qū)19', '4', '0');INSERT INTO `t_areainfo` VALUES ('46', '0', 'xx省1', '1', '0');INSERT INTO `t_areainfo` VALUES ('47', '0', 'xx省2', '1', '0');INSERT INTO `t_areainfo` VALUES ('48', '0', 'xx省3', '1', '0');INSERT INTO `t_areainfo` VALUES ('49', '0', 'xx省4', '1', '0');INSERT INTO `t_areainfo` VALUES ('50', '0', 'xx省5', '1', '0');INSERT INTO `t_areainfo` VALUES ('51', '0', 'xx省6', '1', '0');INSERT INTO `t_areainfo` VALUES ('52', '0', 'xx省7', '1', '0');INSERT INTO `t_areainfo` VALUES ('53', '0', 'xx省8', '1', '0');INSERT INTO `t_areainfo` VALUES ('54', '0', 'xx省9', '1', '0');INSERT INTO `t_areainfo` VALUES ('55', '0', 'xx省10', '1', '0');INSERT INTO `t_areainfo` VALUES ('56', '0', 'xx省11', '1', '0');INSERT INTO `t_areainfo` VALUES ('57', '0', 'xx省12', '1', '0');INSERT INTO `t_areainfo` VALUES ('58', '0', 'xx省13', '1', '0');INSERT INTO `t_areainfo` VALUES ('59', '0', 'xx省14', '1', '0');INSERT INTO `t_areainfo` VALUES ('60', '0', 'xx省15', '1', '0');INSERT INTO `t_areainfo` VALUES ('61', '0', 'xx省16', '1', '0');INSERT INTO `t_areainfo` VALUES ('62', '0', 'xx省17', '1', '0');INSERT INTO `t_areainfo` VALUES ('63', '0', 'xx省18', '1', '0');INSERT INTO `t_areainfo` VALUES ('64', '0', 'xx省19', '1', '0');

DROP FUNCTION IF EXISTS queryChildrenAreaInfo;CREATE FUNCTION queryChildrenAreaInfo(areaId INT)RETURNS VARCHAR(4000)BEGINDECLARE sTemp VARCHAR(4000);DECLARE sTempChd VARCHAR(4000);SET sTemp='$';SET sTempChd = CAST(areaId AS CHAR);WHILE sTempChd IS NOT NULL DOSET sTemp= CONCAT(sTemp,',',sTempChd);SELECT GROUP_CONCAT(id) INTO sTempChd FROM t_areainfo WHERE FIND_IN_SET(parentId,sTempChd)>0;END WHILE;RETURN sTemp;END;

SELECT queryChildrenAreaInfo(1);

SELECT * FROM t_areainfo WHERE FIND_IN_SET(id,queryChildrenAreaInfo(4));

DROP FUNCTION IF EXISTS queryChildrenAreaInfo1;CREATE FUNCTION queryChildrenAreaInfo1(areaId INT)RETURNS VARCHAR(4000)BEGINDECLARE sTemp VARCHAR(4000);DECLARE sTempChd VARCHAR(4000);SET sTemp='$';SET sTempChd = CAST(areaId AS CHAR);SET sTemp = CONCAT(sTemp,',',sTempChd);SELECT parentId INTO sTempChd FROM t_areainfo WHERE id = sTempChd;WHILE sTempChd <> 0 DOSET sTemp = CONCAT(sTemp,',',sTempChd);SELECT parentId INTO sTempChd FROM t_areainfo WHERE id = sTempChd;END WHILE;RETURN sTemp;END;

SELECT * from t_areainfo where FIND_IN_SET(id,queryChildrenAreaInfo1(7));