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

mysql ´æ´¢¹ý³Ì ÓαêµÄÀý×Ó

create procedure getInfor2()
BEGIN
declare _abc varchar(200);
declare stopFlag int;
DECLARE cursor_name CURSOR
FOR
select zhuanyuan from server;
DECLARE CONTINUE HANDLER FOR NOT FOUND set stopFlag=1;
OPEN cursor_name;
REPEAT
FETCH cursor_name INTO _abc;
begin
if _abc='root'
then
insert t(s1) values(3333);
end if;
end;
UNTIL stopFlag = 1
END REPEAT;
CLOSE cursor_name;
END;


Ïà¹ØÎĵµ£º

mysqlÊý¾Ý¿âÈÕÆÚʱº¯ÊýÕûÀí


Ò»¡¢MySQL »ñµÃµ±Ç°ÈÕÆÚʱ¼ä º¯Êý
1.1 »ñµÃµ±Ç°ÈÕÆÚ+ʱ¼ä£¨date + time£©º¯Êý£ºnow()
mysql> select now();
+---------------------+
| now() |
+---------------------+
| 2008-08-08 22:20:46 |
+---------------------+
³ýÁË now() º¯ÊýÄÜ»ñµÃµ±Ç°µÄÈÕÆÚʱ¼äÍ⣬MySQL Öл¹ÓÐÏÂÃæµÄº¯Êý£º ......

mysql »ù±¾²Ù×÷º¯Êý

Ò» . °²×°ÓëÅäÖÃMYSQL
¶þ . ³£ÓÃmysqlÃüÁîÐÐÃüÁî
1 .mysqlµÄÆô¶¯ÓëÍ£Ö¹
Æô¶¯MYSQL·þÎñ net start mysql
Í£Ö¹MYSQL·þÎñ net stop mysql
2 . netstat –na | findstr 3306 ²é¿´±»¼àÌýµÄ¶Ë¿Ú , findstrÓÃÓÚ²éÕÒºóÃæµÄ¶Ë¿ÚÊÇ·ñ´æÔÚ
3 . ÔÚÃüÁîÐÐÖеǽMYSQL¿ØÖÆÌ¨ , ¼´Ê¹Óà MYSQL COMMEND LINE TOOL
 & ......

MYSQL my.cnfÅäÖÃÖÐÎÄÏê½â

MYSQL--my.cnfÅäÖÃÖÐÎÄÏê½â ZZ2007Äê08ÔÂ16ÈÕ ÐÇÆÚËÄ 15:53mysqld³ÌÐò--Ŀ¼ºÍÎļþ
ÒýÓÃ
basedir = path   ʹÓøø¶¨Ä¿Â¼×÷Ϊ¸ùĿ¼(°²×°Ä¿Â¼)¡£
character-sets-dir = path   ¸ø³ö´æ·Å×Å×Ö·û¼¯µÄĿ¼¡£
datadir = path   ´Ó¸ø¶¨Ä¿Â¼¶ÁÈ¡Êý¾Ý¿âÎļþ¡£
pid-file = filename   Î ......

MySQLѧϰ(5)IN,GRANT,MD5,EXISTS

1.INµÄÓ÷¨
IN(value,value1,...) valuesµÄ¸öÊý¸úmax_allowed_packetÏà¹Ø£¬SELECT 2 IN (2,4,'STRING');
NOT IN(value,..)ºÍINÓï·¨Ò»Ñù¡£
2.IF NOT EXISTS
CREATE ... IF NOT EXISTS stm; ...¿ÉÒÔʹDATABASE,TABLE,EVENT¡£ÈçCREATE TABLE IF NOT EXISTS t(id INT); 
3.MD5,MySQLÊý¾Ý¿âÌṩÁËmd5¼ÓÃܹ¦Ä ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ