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

python mysqlµ¼ÈëÊý¾Ý

[root@pku-fan MySQL]# cat limbs.sql
CREATE DATABASE cookbook;
USE cookbook;
DROP TABLE IF EXISTS limbs;
CREATE TABLE limbs
(
    thing   VARCHAR(20),    # what the thing is
    legs    INT,            # number of legs it has
    arms    INT             # number of arms it has
);
INSERT INTO limbs (thing,legs,arms) VALUES('human',2,2);
INSERT INTO limbs (thing,legs,arms) VALUES('insect',6,0);
INSERT INTO limbs (thing,legs,arms) VALUES('squid',0,10);
INSERT INTO limbs (thing,legs,arms) VALUES('octopus',0,8);
INSERT INTO limbs (thing,legs,arms) VALUES('fish',0,0);
INSERT INTO limbs (thing,legs,arms) VALUES('centipede',100,0);
INSERT INTO limbs (thing,legs,arms) VALUES('table',4,0);
INSERT INTO limbs (thing,legs,arms) VALUES('armchair',4,2);
INSERT INTO limbs (thing,legs,arms) VALUES('phonograph',0,1);
INSERT INTO limbs (thing,legs,arms) VALUES('tripod',3,0);
INSERT INTO limbs (thing,legs,arms) VALUES('Peg Leg Pete',1,2);
INSERT INTO limbs (thing,legs,arms) VALUES('space alien',NULL,NULL);
[root@pku-fan MySQL]#mysql -u root -p < limbs.sql
±à¼­python³ÌÐò
import MySQLdb
db_user = '²»ÄÜ˵'
db_pw   = 'ÃØÃÜ'
db = MySQLdb.connect('localhost', db_user, db_pw, 'cookbook')
c = db.cursor()
c.execute("select * from limbs")
print "%17s\t%7s\t%7s" % ('thing','legs','arms')
for thing,legs,arms in c.fetchall():
        print "%17s\t%7s\t%7s" %(thing,legs,arms)


Ïà¹ØÎĵµ£º

cÅÌÕûÀí Python½Å±¾

ÄÜÕûÀí´ó²¿·ÖÎÞÓÃÎļþ
#!/usr/bin/python
#syscleaner.py
import os
import os.path
#delete files and directory recursively
def itedel(dir):
print('in dir :'+dir)
for doc in os.listdir(dir):
try:
if(os.path.isdir(doc)):
itedel(dir+'\\'+doc)
......

MySQLµÄ×ÔÔö×Ö¶Î


1.¹Ø¼ü×Ö 
auto_increment
2.×ÔÔöÓ÷¨ 
Àý: 
CREATE TABLE animals ( id mediumint not null auto_increment, 
name char(30) not null, 
primary key (id));
3.¹ØÓÚ×ÔÔö
Q:Ôõô»ñµÃµ±Ç°µÄ×ÔÔöµÄ×î´óÖµ?
A:select @@identity
Q:Ôõô»ñµÃtableµÄµ±Ç°×ÔÔö×î´óÖµ? 
A:select max(i ......

×Ô¶¯½âѹ´óÁ¿Ñ¹ËõÎļþ Python ½Å±¾

֮ǰдÁËÒ»¸ö×Ô¶¯½âѹѹËõÎļþµ½Ñ¹ËõÎļþËùÔÚÎļþ¼ÐµÄ½Å±¾
ºó¸ù¾Ý×Ô¼ºÐèÒª£¬Ð´ÁËÁíÍâÁ½¸ö¡£Ô­ÀíÒ»Ñù
¶¼ÊÇʹÓÃwinrarµÄÃüÁî
µÚÒ»¸ö½Å±¾Ã»¿¼ÂÇÖܵ½£¬Ö»ÄܽâѹrarÎļþ
¸Ä½øºó¿ÉÒÔÖ§³ÖwinrarÖ§³ÖµÄ¸÷ÖÖÎļþ
°ÑÖ¸¶¨Îļþ¼ÐϵÄÎļþ±£´æµ½Ö¸¶¨Îļþ¼Ð
#rardir.py
import os
import sys
src=sys.argv[1]
dst=sys.argv[2]
......

LINUXÏÂmysql¿Í»§¶Ë²»ÄÜÊäÈëÖÐÎÄ

LINUXÏ mysql¿Í»§¶Ë²»ÄÜÊäÈëÖÐÎÄ
½ñÌìÓöµ½ÁËÕâ¸öÎÊÌ⣬ÔÚLINUXÏÂÊäÈëÖÐÎÄ£¬Ã»ÓÐÎÊÌ⣬µ«ÔÚMYSQL¿Í»§¶ËÉÏÎÞ·¨ÊäÈëÖÐÎÄ£¬ºÜÆæ¹Ö£¿
ÕÒÁ˺ܶà×ÊÁÏÖÕÓÚ½â¾öÁËÕâ¸öÎÊÌ⣬ÆäʵÕâ¸öºÍ×Ö·û¼¯Î޹ء£Í¨³£³öÏÖÔÚ×Ô¼º±àÒëµÄmysql°æ±¾ÉÏ£¬Èç¹ûÊÇREDHATµÄ»°£¬ÇëʹÓÃϵͳ×Ô´øMYSQL¿Í»§¶Ë¡£ÏµÍ³Ä¬ÈÏrpm°²×°µÄmysqlÔòûÓÐÕâ¸öÎÊÌâ³öÏÖ¡£
Á ......

mysqlÓÅ»¯×ܽá

Èç¹û´ó¼ÒÓÐÒìÒ飬¿ÉÒÔÔÚºóÃæ²¹³ä¡£ÎÒ»áËæÊ±¸üеġ£
ÏÖÔÚ´ó¸ÅÁгöÈçÏÂ:(Íû¸÷λ²¹³ä)
1.Êý¾Ý¿âµÄÉè¼Æ
¾¡Á¿°ÑÊý¾Ý¿âÉè¼ÆµÄ¸üСµÄÕ¼´ÅÅ̿ռä.
1).¾¡¿ÉÄÜʹÓøüСµÄÕûÊýÀàÐÍ.(mediumint¾Í±Èint¸üºÏÊÊ).
2).¾¡¿ÉÄ͍ܵÒå×Ö¶ÎΪnot null,³ý·ÇÕâ¸ö×Ö¶ÎÐèÒªnull.£¨Õâ¸ö¹æÔòÖ»ÊʺÏ×Ö¶ÎΪKEYµÄÇéÐΣ©
3).Èç¹ûûÓÐÓõ½±ä³¤×Ö¶ÎµÄ ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ