mySQl递归存储过程

时间:2013-01-13 14:39:38

标签: mysql stored-procedures recursion

我在以下存储过程中使用递归

CREATE  PROCEDURE `SP_DeleteParentDirectory`(pParentID INT,pIsFolder INT,pReferenceID INT)
BEGIN       
    SET @IsFolder= NULL;
    SET @ChildID= NULL;
    SET @ReferenceID= NULL;
    IF ( pIsFolder= 2) THEN
                SELECT  FileID INTO @ChildID FROM filesinfo WHERE ParentID= pParentID LIMIT 1;
                WHILE (@ChildID IS NOT NULL) DO
                         SELECT  @IsFolder := filesinfo.IsFolder, @ReferenceID :=filesinfo.ReferenceID  FROM filesinfo WHERE filesinfo.FileID = @ChildID;
                        CALL SP_DeleteParentDirectory(@ChildID,@IsFolder,@ReferenceID);             
                        SELECT filesinfo.FileID INTO @ChildID FROM filesinfo WHERE ParentID= pParentID LIMIT 1;
                END While;
    END IF;
    CALL SP_DeleteFileInfo(pParentID,pReferenceID);     
END;;

但是当我尝试执行它时,我面临递归最大限制的错误,这迫使我添加以下语句:

SET @@SESSION.max_sp_recursion_depth = 100;

我可以在不添加此声明的情况下解决问题

0 个答案:

没有答案