一.导出一张表数据
把test_time表中的数据导出成txt 文件
mysql> show global variables like '%secure%';+--------------------------+-----------------------+
| Variable_name | Value |
+--------------------------+-----------------------+
| require_secure_transport | OFF |
| secure_auth | ON |
| secure_file_priv | /var/lib/mysql-files/ | 这个是导出目录
+--------------------------+-----------------------+
3 rows in set (0.01 sec)
进行导出操作：
mysql> select * from test_time into outfile '/var/lib/mysql-files/test_time.txt';
Query OK, 1 row affected (0.00 sec)
会在目录下生成数据文件：
[root@master mysql-files]# more test_time.txt
1 no -03-26 11:29:04 -03-26 11:30:55
可以进行格式的调整：
SELECT * INTO OUTFILE '/var/lib/mysql-files/test_time.txt'FIELDS TERMINATED BY',' OPTIONALLY ENCLOSED BY '"'LINES TERMINATED BY'\n'FROM test_time;
此刻生成的数据文件：
[root@master mysql-files]# more test_time.txt
1,"no","-03-26 11:29:04","-03-26 11:30:55"
二 导出SQL文件的数据
[root@master mysql-files]# mysqldump -u root -p mydb test_time >test_time.txt
Enter password:
以上命令创建的文件内容如下：
-- MySQL dump 10.13 Distrib 5.7.25, forLinux (x86_64)--
--Host: localhost Database: mydb-- ------------------------------------------------------
-- Server version 5.7.25
/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT*/;/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS*/;/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION*/;/*!40101 SET NAMES utf8*/;/*!40103 SET @OLD_TIME_ZONE=@@TIME_ZONE*/;/*!40103 SET TIME_ZONE='+00:00'*/;/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0*/;/*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0*/;/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO'*/;/*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0*/;--
-- Table structure fortable `test_time`--DROP TABLE IF EXISTS `test_time`;/*!40101 SET @saved_cs_client = @@character_set_client*/;/*!40101 SET character_set_client = utf8*/;
CREATE TABLE `test_time` (
`id`int(11) NOT NULL,
`status` varchar(24) DEFAULT NULL,
`create_time` datetime DEFAULT CURRENT_TIMESTAMP,
`update_time` datetime DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1 COMMENT='测试时间表';/*!40101 SET character_set_client = @saved_cs_client*/;--
-- Dumping data fortable `test_time`--LOCK TABLES `test_time` WRITE;/*!40000 ALTER TABLE `test_time` DISABLE KEYS*/;
INSERT INTO `test_time` VALUES (1,'no','-03-26 11:29:04','-03-26 11:30:55');/*!40000 ALTER TABLE `test_time` ENABLE KEYS*/;
UNLOCK TABLES;/*!40103 SET TIME_ZONE=@OLD_TIME_ZONE*/;/*!40101 SET SQL_MODE=@OLD_SQL_MODE*/;/*!40014 SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS*/;/*!40014 SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS*/;/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT*/;/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS*/;/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION*/;/*!40111 SET SQL_NOTES=@OLD_SQL_NOTES*/;-- Dump completed on -03-26 11:59:06
如果你需要导出整个数据库的数据，可以使用以下命令：
[root@master mysql-files]# mysqldump -u root -p mydb>mydb.txt
Enter password:
如果需要备份所有数据库，可以使用以下命令：
[root@master mysql-files]# mysqldump -u root -p --all-databases >database_dump.txt
Enter password:
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