Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

¸Ä¸ömysql¹ý³Ì - ÆäËûÊý¾Ý¿â¿ª·¢ / MySQL/Postgresql

CREATE PROCEDURE createChildLst (IN rootId INT,IN nDepth INT)
  BEGIN
  DECLARE done INT DEFAULT 0;
  DECLARE b INT;
  DECLARE cur1 CURSOR FOR SELECT id from treeNodes where pid=rootId;
  DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = 1;
   
  insert into tmpLst values (null,rootId,nDepth);
  OPEN cur1;  
  FETCH cur1 INTO b;
  WHILE done=0 DO
  CALL createChildLst(b,nDepth+1);
  FETCH cur1 INTO b;
  END WHILE;
   
  CLOSE cur1;
  END;

ÎÒÏëÈÃndepth ´óÓÚÊ® ºóÃæ¼Ç¼¾Í²»²é²»À´£¬Ò²¾ÍÊÇ˵Éî¶ÈÎÒÖ»²éµ½10ºóÃæ¾Í²»²îÁË¡£ ÎÒÓÃÁË loop ËÀÁË2´Î»ú ºÃÏñÊÇ¿¨ËÀ»úµÄ¡£°ïÎÒ½â¾öÏ£¬thk
²Î¿¼Õâ¸öÌù×ÓÖеķ½·¨Èý£ºÀûÓÃÖмä±íºÍ¹ý³Ì¡£

http://blog.csdn.net/ACMAIN_CHM/archive/2009/05/02/4142971.aspx

×Ô¼º¸Äһϣ¬ÁíÍâ¼ÓÈë¶ÔLevelµÄÅжϡ£

ÄÜÓ÷½·¨2 ½â¾öÂð£¿

·½±ãµÄ»° ¾Í°ïÎÒ¸Äһϡ£ÎÒ¶Ô¹ý³Ì³¬¼¶²»Á˽â


ÇëÎÊһϣ¬ÎÒÿ´Î
call showChildLst(3);
Ëû¶¼±¨Õâ¸ö´í ÎÒset max_sp_recursion_depth=225; ¾Í¿ÉÒÔÁË
  ÎÒ¶¼ÉèÁ˺ü¸´ÎÁË Ã¿´Î¶¼ÒªÕâÑùÂð£¿
 Recursive limit 0 (as set by the max_sp_recursion_depth variable) was exceeded for routine createChildLst

ÎÒд³ÌÐòµ÷ÓÃÕâ¸ö¹ý³ÌÊÇ Òª²»ÒªÔÚµ÷ÓÃǰ ¶¼ set max_sp_recursion_depth Ò»ÏÂ



Ïà¹ØÎÊ´ð£º

mysqlÊý¾Ý¿â - Java / JavaÏà¹Ø

CREATE DATABASE ADDRESSLIST;
USE ADDRESSLIST;
DROP TABLE IF EXISTS FRIEND;
CREATE TABLE FRIEND
  (FRIEND_ID INTEGER NOT NULL AUTO_INCREMENT PRIMARY KEY ,
FRIEND_NAME VARCHAR(20) NOT N ......

ÈçºÎʹÓÃMySQL - MS-SQL Server / »ù´¡Àà

¸Õ¸Õ½Ó´¥MySQL,²»ÖªµÀ¸ÃÈçºÎÈ¥²é¿´Êý¾Ý£¬²åÈëÊý¾Ý£¬´´½¨Êý¾Ý¿â¡¢±í£¬ÓÃÄÄΪǰ±²ÄÜÖ¸½ÌÒ»¶þ£¿

MySQL 5.1²Î¿¼ÊÖ²á

ÒýÓÃ
ÐÖµÜÄã»á½áÌùÂð£¿
mysql ²Î¿¼ÊÖ²á

baidu

MySQL¹Ù·½Îĵµ http://dev.mysql.com/doc ......

MYSQLµ÷¶ÈµÄÎÊÌâ - MS-SQL Server / ÒÉÄÑÎÊÌâ


3̨µçÄÔ£¬ÆäÖÐһ̨×÷ΪMYSQL·þÎñÆ÷£¬ÁíÍâ2̨ΪTOMCAT·þÎñÆ÷¡£
MYSQL·þÎñÆ÷ÀïÓÐÒ»Ìõ¼Ç¼£¬ IDΪ10.
ÏÖÔÚ2̨TOMCATͬʱ£¨100%£©·¢ÆðÐÞ¸ÄMYSQLÀïIDΪ10µÄÄÇÌõ¼Ç¼£¬±ÈÈçÐ޸ĴËID¼Ç¼ÀïijһÏîµÄÄÚÈÝ¡£ ±ÈÈçTOMCAT 1Ò ......

MYSQLÁ¬½ÓµÄÎÊÌâ - Java / Java SE

Java code:

com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: The last packet successfully received from the server was51093 seconds ago.The last packet sent successfully to the server was 5 ......

mysqlµÄ¸üÐÂÓï¾ä - Java / Java SE

id name datetime
1 a 2010-05-13 10:15:00
2 b 2010-05-14 09:10:00
3 d 2010-05-14 10:10:00
ÈçºÎ½«¾àÀëĿǰ×î½üµÄÄǸö¼Ç¼µÄname ¸üÐÂΪ¡°x¡±ÄØ
лл¿© °¡ ºÇºÇ
update table_n ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ