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

mysql ´æ´¢¹ý³Ì ÊÂÎñ

Ôõô²¶×½µ½´íÎó½øÐÐroolback
DELIMITER $$

DROP PROCEDURE IF EXISTS `test`.`transaction`$$

CREATE DEFINER=`root`@`localhost` PROCEDURE `transaction`()
BEGIN
set autocommit = 0;
/*start TRANSACTION;*/

insert into t3 (id) values(90000);
insert into t3 (id3) values(60000);

if ERRORS <> 0 then
  /*rollback to SAVEPOINT savepoint_1;*/
  rollback;
end if;

    END$$

DELIMITER ;
µÚ¶þÌõÊÇ´íÎóµÄ£¬µ«µÚÒ»ÌõÈ´Ö´ÐÐÁË£¬
ÔõôÈõÚÒ»ÌõÒ²rollback°¡£¿
±íµÄ½á¹ûÊÇinnodbÀàÐ͵Ä

insert IGNORE into t3 (id3) values(60000);
  if @@error_count <> 0 then

if @@ERRORS <> 0 then

µÚ¶þÌõÊÇ´íÎóµÄ£¬µ«µÚÒ»ÌõÈ´Ö´ÐÐÁË£¬

------------
Òª½øÐÐÒì³£´¦Àí£¬·ñÔò£¬ºóÃæµÄÓï¾ä¶¼Ö´Ðв»ÁË¡£
ʾÀý£º

SQL code:
DROP PROCEDURE IF EXISTS `p_test`;
CREATE DEFINER=`root`@`localhost` PROCEDURE `p_test`()
BEGIN
declare v_i int;
declare continue handler for 1062 set v_i=1;
set v_i=0;
start transaction;
insert into tb_test22 (id) values(90000);
insert into tb_test22 (id) values(90000);

if v_i <> 0 then
rollback;
else
commit;
end if;
END;


ÉÏÃæµÄʾÀý¼ÙÉè±ítb_test22µÄidÁÐΪÖ÷¼ü¡£
{{-


Ïà¹ØÎÊ´ð£º

c,c++Á¬½Ómysql ÕÒ²»µ½Í·²¿Îļþ£¨ÐÂÊÖ£©

±àÒëÆ÷£ºC-Free4
mysql µ¥¶À°²×°µÄ£¬ÏÖÔÚΪapache+php+mysql¿ÉÒÔʹÓá£
×î½üÔÚÁ·Ï°c£¬c++£»ÏëÓÃc£¬c++Á¬½ÓÏÂÎÒµÄmysql£¬ºÃ¶àµØ·½¶à˵mysql.hÕÒ²»µ½¡£¶øÇÒÎÒmysqlûÓÐËùνµÄincludeÎļþ¼Ð°¡¡£
Íü¸ßÊÖÖ¸µãÒ»¶ ......

apache+PHP+mysqlÔÚwin7ÏÂʹÓÃ

ÈçÌ⣬ÕâÈý¸öÔÚwin7ÏÂʹÓûáÓÐʲô¼æÈÝÐÔÎÊÌâÂð£¿
ÓÉÓÚÎÒ×î½üÔÚʹÓÃwin7£¬¾ÍÀÁµÃ½øxpÁË£¡
×Ô¼ºÓÃwindows 2008ÓÐÒ»Äê¶àÁË£¬Ã»³öÏÖÈκÎÎÊÌâ¡£

win7²âÊÔ°æÒ²Óùý£¬²»»áÓÐʲôÎÊÌâµÄ£¬·ÅÐÄ¡£

µ±È»Äã×î ......

MySQLÈëÃÅ

MySQLÈëÃÅ
¿ÉÒÔÏÈ¿´Ê²Ã´Êé¼®°¡£¿
ÏȶÁÈý±é¡¶Êý¾Ý¿âϵͳ¸ÅÂÛ¡·,ÕÆÎÕÊý¾Ý¿âµÄ»ù´¡ÀíÂÛ¡£
È»ºóÔÙ´Ö¿´Ò»±éMYSQLµÄ¹Ù·½Îĵµ¡£ MySQL¹Ù·½Îĵµ http://dev.mysql.com/doc/refman/5.1/zh/index.html

¾ÍÕÒÒ»±¾ºÜ»ù´ ......

mysql ¼òµ¥ÎÊÌâ

¼ÙÈçÊý¾Ý¿âÖÐÓиötest±í£¬±íÖÐÓÐid£¬Name£¬num£¬¼Ç¼ʱ¼ä
idΪ×ÔÔö³¤Ö÷¼ü£¬nameÊÇÃû×Ö£¬num±íʾÆäÊýÁ¿

1  nike  100        ϵͳʱ¼ä
2  nike  300  &n ......

mysql updateÓï¾äµÄÎÊÌâ

ÎÒÏëÒª¸üÐÂij¸ö±íÅÅÐòºó¿¿Ç°µÄÊý¾Ý£¬ÓÚÊÇдÁËÒ»¸öÓï·¨£º
update dcproduct set pOrder=pOrder+2 order by pOrder desc,id desc limit 6£»Õâ¸öÊÇ¿ÉÒÔÔËÐе쬽á¹ûÊǸüÐÂÁËǰÁùÌõ¼Ç¼¡£
ºóÀ´·¢ÏÖ©Á˸öÌõ¼þÒªÁ¬± ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ