How to restore a database and a table from a MySQL full database backup

In the official MySQL dump tool, how can I restore only a certain database?

Full database backup

[root@HE1 ~]# mysqldump -uroot -p --single-transaction -A --master-data=2 >dump.sql

Only restore the contents of the erp library

[root@HE1 ~]# mysql -uroot -pMANAGER erp --one-database <dump.sql

It can be seen that the main parameter used here is the --one-database abbreviated as -o, which greatly facilitates our recovery flexibility.

So how do we extract a table from the full database backup? Restoring the entire database and then restoring a table is OK for a small database, but it is very troublesome for a large database. Then we can use regular expressions for quick extraction. The specific implementation method is as follows:

Extract the table structure of table t from the full database backup

[root@HE1 ~]# sed -e'/./{H;$!d;}' -e 'x;/CREATE TABLE `t`/!d;q' dump.sql

DROP TABLE IF EXISTS `t`;

/*!40101 SET @saved_cs_client = @@character_set_client */;

/*!40101 SET character_set_client = utf8 */;

CREATE TABLE `t` (

 `id` int(10) NOT NULL AUTO_INCREMENT,

 `age` tinyint(4) NOT NULL DEFAULT '0',

 `name` varchar(30) NOT NULL DEFAULT '',

 PRIMARY KEY (`id`)

)ENGINE=InnoDBAUTO_INCREMENT=4 DEFAULT CHARSET=utf8;

/*!40101 SETcharacter_set_client = @saved_cs_client */;

Extract the contents of the t table from the full database backup

[root@HE1 ~]# grep'INSERT INTO `t`' dump.sql

INSERT INTO `t`VALUES (0,0,''),(1,0,'aa'),(2,0,'bbb'),(3,25,'helei');

The above is the full content of this article. I hope it will be helpful for everyone’s study. I also hope that everyone will support 123WORDPRESS.COM.