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

MySqlÊý¾Ý¿â°æ±¾²éѯ

MySql°æ±¾ÐÅÏ¢µÄ²éѯ£º
1¡¢Í¨¹ýmysql -VÃüÁî²éѯ
C:\mysql\bin>mysql -V
mysql  Ver 12.22 Distrib 4.0.18, for Win95/Win98 (i32)
2¡¢Í¨¹ýmysqlģʽϵÄstatusÃüÁî²é¿´×´Ì¬
mysql> status
--------------
mysql  Ver 12.22 Distrib 4.0.18, for Win95/Win98 (i32)
Connection id:          14933
Current database:       mysql
Current user:           root@localhost
SSL:                    Not in use
Server version:         4.0.18-nt
Protocol version:       10
Connection:             localhost via TCP/IP
Client characterset:    latin1
Server characterset:    latin1
TCP port:               3306
Uptime:                 19 hours 24 min 41 sec
Threads: 2  Questions: 37443  Slow queries: 0  Opens: 355  Flush tables: 1  Open
 tables: 9  Queries per second avg: 0.536
--------------
mysql>
 
3¡¢Í¨¹ýmysqlģʽϵÄselectÓï¾ä²éѯ
mysql> select version();
+-----------+
| version() |
+-----------+
| 4.0.18-nt |
+-----------+
1 row in set (0.00 sec)
mysql>
 
4¡¢Í¨¹ýmysql --helpÃüÁî½øÐв鿴
C:\mysql\bin>mysql --help
mysql  Ver 12.22 Distrib 4.0.18, for Win95/Win98 (i32)
Copyright (C) 2002 MySQL AB
......
 
תÌû£ºhttp://www.hackbase.com/tech/2009-06-25/53429.html


Ïà¹ØÎĵµ£º

shell Öе÷Óà mysql ²Ù×÷

#!/bin/bash
#ɾ³ý100¸öÊý¾Ý¿âÖеÄ1000¸ö±íµÄ¹ýÆÚÊý¾Ý
DBHOST="127.0.0.1"
DBPWD="pwd"
DBUSER="root"
MYSQLBIN="/usr/local/mysql/bin/mysql"
for((dbindex = 0;dbindex < 100;dbindex++))
do
   for((tabindex = 0;tabindex < 10;tabindex++))
   do
    if [&n ......

ÈçºÎÐÞ¸Ämysql rootÃÜÂë

1¡¢±à¼­MySQL(ºÍPHP´îÅäÖ®×î¼Ñ×éºÏ)ÅäÖÃÎļþ£º
windows»·¾³ÖУº%MySQL(ºÍPHP´îÅäÖ®×î¼Ñ×éºÏ)_installdir%\my.ini¡¡//Ò»°ãÔÚMySQL(ºÍPHP´îÅäÖ®×î¼Ñ×éºÏ)°²×°Ä¿Â¼ÏÂÓÐmy.ini¼´MySQL(ºÍPHP´îÅäÖ®×î¼Ñ×éºÏ)µÄÅäÖÃÎļþ¡£
linux»·¾³ÖУº/etc/my.cnf
ÔÚ[MySQL(ºÍPHP´îÅäÖ®×î¼Ñ×éºÏ)d]ÅäÖöÎÌí¼ÓÈçÏÂÒ»ÐУº
skip-grant-tables
......

MySQL³£ÓÃÄÚÖú¯Êý

1£º ASCII(str) ¡¡·µ»Ø×Ö·û´®strµÄµÚÒ»¸ö×Ö·ûµÄASCIIÖµ(strÊǿմ®Ê±·µ»Ø0) mysql> select ASCII('2'); ¡¡¡¡-> 50 mysql> select ASCII(2); ¡¡¡¡-> 50 mysql> select ASCII('dete'); ¡¡¡¡-> 100
2£ºORD(str) ¡¡Èç¹û×Ö·û´®str¾äÊ×Êǵ¥×Ö½Ú·µ»ØÓëASCII()º¯Êý·µ»ØµÄÏàֵͬ¡£¡¡Èç¹ûÊÇÒ»¸ö¶à×Ö½Ú×Ö·û,ÒÔ¸ñʽ·µ ......

¸ßÐÔÄÜMYSQL¶ÁÊé±Ê¼Ç£ºMYSQL×¼±¸Óï¾ä

MYSQL4.1¼°¸ü¸ß°æ±¾Ö§³Ö·þÎñÆ÷¶Ë×¼±¸Óï¾ä(Prepared Statements), ËüʹÓÃÔöÇ¿µÄ¶þ½øÖƿͻ§¶Ë/·þÎñÆ÷ЭÒéÔÚ¿Í»§¶ËºÍ·þÎñÆ÷Ö®¼ä¸ßЧµÄ·¢ËÍÊý¾Ý£¬¿ÉÒÔͨ¹ýÖ§³ÖÕâÖÖÐÐЭÒéµÄ±à³Ì¿âÀ´·ÃÎÊ×¼±¸Óï¾ä£¬ÁÐÈëMYSQL CAPI,MYSQL Connector/JºÍMYSQL Connector/NET ΪJAVAºÍ.NETÌṩÁËͬÑùµÄ·ÃÎʽӿڡ£ËüÒ²ÓÐSQLÓïÑԵķÃÎʽӿڡ£
´´½¨×¼ ......

PHPÖеÄmysql_real_escape_stringº¯Êý

¸ù¾ÝÄãµÄʹÓÃÄ¿µÄÎÒ¾õµÃÕâ¸öº¯ÊýÓÐÁ½·½ÃæµÄÓÃ;£º
·ÀÖ¹SQL Injection¹¥»÷£¬Ò²¾ÍÊÇÄã±ØÐëÑéÖ¤Óû§µÄÊäÈë
²Ù×÷Êý¾ÝµÄʱºò±ÜÃâ²»±ØÒªµÄ×Ö·ûµ¼Ö´íÎó
mysql_real_escape_string() º¯ÊýתÒå SQL Óï¾äÖÐʹÓõÄ×Ö·û´®ÖеÄÌØÊâ×Ö·û¡£
ÏÂÁÐ×Ö·ûÊÜÓ°Ï죺
\x00
\n
\r
\
'
"
\x1a
Èç¹û³É¹¦£¬Ôò¸Ãº¯Êý·µ»Ø±»×ªÒåµÄ×Ö·û´ ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ