mysql遞迴查詢樹形表，mysql遞迴樹形表

mysql遞迴查詢樹形表，mysql遞迴樹形表

DROP TABLE IF EXISTS `t_areainfo`;CREATE TABLE `t_areainfo` ( `id` int(11) NOT NULL AUTO_INCREMENT, `level` int(11) DEFAULT 0, `name` varchar(255), `parentId` int(11), `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', '1', '0');INSERT INTO `t_areainfo` VALUES ('3', '0', '華南區', '1', '0');INSERT INTO `t_areainfo` VALUES ('4', '0', '北京', '2', '0');INSERT INTO `t_areainfo` VALUES ('5', '0', '海澱區', '4', '0');INSERT INTO `t_areainfo` VALUES ('6', '0', '丰台區', '4', '0');INSERT INTO `t_areainfo` VALUES ('7', '0', '朝陽區', '4', '0');INSERT INTO `t_areainfo` VALUES ('8', '0', '北京XX區1', '4', '0');INSERT INTO `t_areainfo` VALUES ('9', '0', '北京XX區2', '4', '0');INSERT INTO `t_areainfo` VALUES ('10', '0', '北京XX區3', '4', '0');INSERT INTO `t_areainfo` VALUES ('11', '0', '北京XX區4', '4', '0');INSERT INTO `t_areainfo` VALUES ('12', '0', '北京XX區5', '4', '0');INSERT INTO `t_areainfo` VALUES ('13', '0', '北京XX區6', '4', '0');INSERT INTO `t_areainfo` VALUES ('14', '0', '北京XX區7', '4', '0');INSERT INTO `t_areainfo` VALUES ('15', '0', '北京XX區8', '4', '0');INSERT INTO `t_areainfo` VALUES ('16', '0', '北京XX區9', '4', '0');INSERT INTO `t_areainfo` VALUES ('17', '0', '北京XX區10', '4', '0');INSERT INTO `t_areainfo` VALUES ('18', '0', '北京XX區11', '4', '0');INSERT INTO `t_areainfo` VALUES ('19', '0', '北京XX區12', '4', '0');INSERT INTO `t_areainfo` VALUES ('20', '0', '北京XX區13', '4', '0');INSERT INTO `t_areainfo` VALUES ('21', '0', '北京XX區14', '4', '0');INSERT INTO `t_areainfo` VALUES ('22', '0', '北京XX區15', '4', '0');INSERT INTO `t_areainfo` VALUES ('23', '0', '北京XX區16', '4', '0');INSERT INTO `t_areainfo` VALUES ('24', '0', '北京XX區17', '4', '0');INSERT INTO `t_areainfo` VALUES ('25', '0', '北京XX區18', '4', '0');INSERT INTO `t_areainfo` VALUES ('26', '0', '北京XX區19', '4', '0');INSERT INTO `t_areainfo` VALUES ('27', '0', '北京XX區1', '4', '0');INSERT INTO `t_areainfo` VALUES ('28', '0', '北京XX區2', '4', '0');INSERT INTO `t_areainfo` VALUES ('29', '0', '北京XX區3', '4', '0');INSERT INTO `t_areainfo` VALUES ('30', '0', '北京XX區4', '4', '0');INSERT INTO `t_areainfo` VALUES ('31', '0', '北京XX區5', '4', '0');INSERT INTO `t_areainfo` VALUES ('32', '0', '北京XX區6', '4', '0');INSERT INTO `t_areainfo` VALUES ('33', '0', '北京XX區7', '4', '0');INSERT INTO `t_areainfo` VALUES ('34', '0', '北京XX區8', '4', '0');INSERT INTO `t_areainfo` VALUES ('35', '0', '北京XX區9', '4', '0');INSERT INTO `t_areainfo` VALUES ('36', '0', '北京XX區10', '4', '0');INSERT INTO `t_areainfo` VALUES ('37', '0', '北京XX區11', '4', '0');INSERT INTO `t_areainfo` VALUES ('38', '0', '北京XX區12', '4', '0');INSERT INTO `t_areainfo` VALUES ('39', '0', '北京XX區13', '4', '0');INSERT INTO `t_areainfo` VALUES ('40', '0', '北京XX區14', '4', '0');INSERT INTO `t_areainfo` VALUES ('41', '0', '北京XX區15', '4', '0');INSERT INTO `t_areainfo` VALUES ('42', '0', '北京XX區16', '4', '0');INSERT INTO `t_areainfo` VALUES ('43', '0', '北京XX區17', '4', '0');INSERT INTO `t_areainfo` VALUES ('44', '0', '北京XX區18', '4', '0');INSERT INTO `t_areainfo` VALUES ('45', '0', '北京XX區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');--方式一：採用function擷取所有子節點的id--查詢傳入areaId及其以下所有子節點delimiter //DROP FUNCTION IF EXISTS queryChildrenAreaInfo;CREATE FUNCTION `queryChildrenAreaInfo` (areaId INT)RETURNS VARCHAR(4000)BEGINDECLARE sTemp VARCHAR(4000);DECLARE sTempChd VARCHAR(4000);SET sTemp = '$';SET sTempChd = cast(areaId as char);WHILE sTempChd is not NULL DOSET sTemp = CONCAT(sTemp,',',sTempChd);SELECT group_concat(id) INTO sTempChd FROM t_areainfo where FIND_IN_SET(parentId,sTempChd)>0;END WHILE;return sTemp;END//delimiter //2--調用方式select queryChildrenAreaInfo(1);select * from t_areainfo where FIND_IN_SET(id, queryChildrenAreaInfo(20)); /*delimiter //CREATE FUNCTION `queryChildrenAreaInfo`(rootId INT)RETURNS varchar(1000)BEGINDECLARE sTemp VARCHAR(1000);DECLARE sTempChd VARCHAR(1000);SET sTemp = '$';SET sTempChd =cast(rootId 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//delimiter ;*/