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

Backup and Restore MySQL Database Using mysqldump


Backup and Restore MySQL Database Using mysqldump
by Ramesh Natarajan on September 22, 2008ShareThis
[mysqldump - MySQL Backup & Restore]mysqldump is an effective tool to backup MySQL database. It creates a *.sql file with DROP table, CREATE table and INSERT into sql-statements of the source database. To restore the database,  execute the *.sql file on destination database.  For MyISAM, use mysqlhotcopy method that we explained earlier, as it is faster for MyISAM tables.
Using mysqldump, you can backup a local database and restore it on a remote database at the same time, using a single command. In this article, let us review several practical examples on how to use mysqldump to backup and restore.
For the impatient, here is the quick snippet of how backup and restore MySQL database using mysqldump:
backup: # mysqldump -u root -p[root_password] [database_name] > dumpfilename.sql
restore:# mysql -u root -p[root_password] [database_name] < dumpfilename.sql
How To Backup MySQL database
1. Backup a single database:
This example takes a backup of sugarcrm database and dumps the output to sugarcrm.sql
# mysqldump -u root -ptmppassword sugarcrm > sugarcrm.sql
# mysqldump -u root -p[root_password] [database_name] > dumpfilename.sql
The sugarcrm.sql will contain drop table, create table and insert command for all the tables in the sugarcrm database. Following is a partial output of sugarcrm.sql, showing the dump information of accounts_contacts table:
--
-- Table structure for table `accounts_contacts`
--
DROP TABLE IF EXISTS `accounts_contacts`;
SET @saved_cs_client     = @@character_set_client;
SET character_set_client = utf8;
CREATE TABLE `accounts_contacts` (
`id` varchar(36) NOT NULL,
`contact_id` varchar(36) default NULL,
`account_id` varchar(36) default NULL,
`date_modified` datetime default NULL,
`deleted` tinyint(1) NOT NULL default '0',
PRIMARY KEY  (`id`),
KEY `idx_account_contact` (`ac


Ïà¹ØÎĵµ£º

UbuntuϳöÏÖMysql error(2002)µÄ½â¾ö·½·¨

      ¹ýÁËÒ»Õó×Óºó£¬ÎªÁËд·Ö²¼Ê½×÷Òµ£¬ÖØÐÂʹÓÃMysqlʱ£¬·¢ÏÖËäÈ»Æô¶¯³É¹¦ÁË£¬µ«ÊÇÁ¬½ÓµÄʱºòÈ¥³öÏÖÈçÏ´íÎó
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)
¸ù¾ÝÌáʾÊÇ/var/run/mysqld/mysqld.sockÎļþ²»´æÔÚ¡£
Ϊʲô»áÕâÑùÄØ£¿
  ......

MySQLÊÂÎñ´¦Àí

START TRANSACTION, COMMITºÍROLLBACKÓï·¨
START TRANSACTION | BEGIN [WORK]
COMMIT [WORK] [AND [NO] CHAIN] [[NO] RELEASE]
ROLLBACK [WORK] [AND [NO] CHAIN] [[NO] RELEASE]
SET AUTOCOMMIT = {0 | 1}
START
TRANSACTION»òBEGINÓï¾ä¿ÉÒÔ¿ªÊ¼Ò»ÏîеÄÊÂÎñ¡£COMMIT¿ÉÒÔÌá½»µ±Ç°ÊÂÎñ£¬ÊDZä¸ü³ÉΪÓÀ¾Ã±ä¸ü¡£ROLLBACK ......

¹ØÓÚmysqlµÄ¾Û¼¯Ë÷Òý

·­Ò룺
InnoDB±í»á°üº¬Ò»¸ö¾Û¼¯Ë÷Òý£¨Êý¾Ý±íµÄÎïÀí´æ´¢Ë³ÐòºÍ±íµÄÂß¼­´æ´¢Ë³ÐòÒ»Ö£©
Ò»°ãÊǰ´ÕÕÏÂÃæµÄ¹æÔòÀ´É趨¾Û¼¯Ë÷ÒýµÄ£º
1£¬¼ÙÈç±í°üº¬PRIMARY KEY£¬InnoDBʹÓÃËü×÷Ϊ¾Û¼¯Ë÷Òý
2£¬¼ÙÈç±íûÓж¨ÒåPRIMARY KEY£¬InnoDB½«µÚÒ»¸öÖ»°üº¬NOT NULLÊôÐÔÁеÄUNIQUE index×÷ΪÖ÷¼ü²¢ÇÒ½«ËüÉèÖÃΪ¾Û¼¯Ë÷Òý
3£¬Ç°Á½Õß¶¼²»Âú× ......

MysqlµÄ´æ´¢ÒýÇæ


<!--
/* Font Definitions */
@font-face
{font-family:ËÎÌå;
panose-1:2 1 6 0 3 1 1 1 1 1;
mso-font-alt:SimSun;
mso-font-charset:134;
mso-generic-font-family:auto;
mso-font-pitch:variable;
mso-font-signature:3 135135232 16 0 262145 0;}
@font-face
{font-family:"\@ËÎÌå" ......

MysqlÊýѧº¯Êý½âÎö

ËùÓеÄÊýѧº¯ÊýÔÚÒ»¸ö³ö´íµÄÇé¿öÏ·µ»ØNULL¡£ 

µ¥Ä¿¼õ¡£¸Ä±ä²ÎÊýµÄ·ûºÅ¡£ 
mysql> select - 2; 
×¢Ò⣬Èç¹ûÕâ¸ö²Ù×÷·ûÓëÒ»¸öBIGINTʹÓ㬷µ»ØÖµÊÇÒ»¸öBIGINT£¡ÕâÒâζ×ÅÄãÓ¦¸Ã±ÜÃâÔÚÕûÊýÉÏʹÓÃ-£¬ÄÇ¿ÉÄÜÓÐÖµ-2^63£¡ 
ABS(X)
·µ»ØXµÄ¾ø¶ÔÖµ¡£ 
mysql> select ABS(2);&n ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ