Mysql实现Oracle中的Start with...Connect by方式

CREATE FUNCTION queryChildrenAreaInfo(areaId INT)
RETURNS VARCHAR(4000)
BEGIN
DECLARE sTemp VARCHAR(4000);
DECLARE sTempChd VARCHAR(4000);

SET sTemp='$';
SET sTempChd = CAST(areaId AS CHAR);

WHILE sTempChd IS NOT NULL DO
SET sTemp= CONCAT(sTemp,',',sTempChd);
SELECT GROUP_CONCAT(id) INTO sTempChd FROM t_areainfo WHERE FIND_IN_SET(parentId,sTempChd)>0;
END WHILE;
RETURN sTemp;

CREATE PROCEDURE getChildList
IN rootId DECIMAL(65),
IN tablesname VARCHAR(6000),
OUT sTemp VARCHAR(6000)
BEGIN
DECLARE sTempChd VARCHAR(4000);

SET sTemp='$';
SET sTempChd = CAST(rootId AS CHAR);

WHILE sTempChd IS NOT NULL DO
SET sTemp= CONCAT(sTemp,',',sTempChd);
set @sqlexe = concat("SELECT GROUP_CONCAT(id) INTO sTempChd FROM " , tablesname , " WHERE FIND_IN_SET(parentId,sTempChd)>0;")
prepare sqlexe from @sqlexe;
execute sqlexe;
END WHILE;
END;

CREATE PROCEDURE `getParentList`( 
	IN rootId DECIMAL(65,0), 
	IN tablesname VARCHAR ( 500 ),
	OUT sTemp VARCHAR ( 6000 ) )
BEGIN
	DECLARE
		PARENTID DECIMAL(65);
	SET sTemp = '$';
	SET @sTempChd = cast(rootId as char);
	WHILE @sTempChd <> 0 DO
		SET sTemp = concat( sTemp, ',', @sTempChd );
		SET @sqlcmd = CONCAT("SELECT PARENTID into @sTempChd FROM " , tablesname , " WHERE CATEID = " , @sTempChd , ";");
		PREPARE stmt FROM @sqlcmd;
		EXECUTE stmt;
	END WHILE;
	DEALLOCATE PREPARE stmt;
END