mysqldump

Why is a mysqldump with single-transaction more consistent than a one without?

由 心不动则不痛 提交于 2019-12-07 00:57:34
问题 I have gone through the manual and it was mentioned that every transaction will add a BEGIN statement before it starts taking the dump. Can someone elaborate this in a more understandable manner? Here is what I read: This option issues a BEGIN SQL statement before dumping data from the server. It is useful only with transactional tables such as InnoDB and BDB, because then it dumps the consistent state of the database at the time when BEGIN was issued without blocking any applications." Can

mysqldump command not working?

由 浪尽此生 提交于 2019-12-06 20:34:15
问题 I am using mysqldump to take backup of my database, but the command is not working.. the command i am using is mysqldump -u root dbname> 'c:\backupdatafolder\backup.sql' i am running this command in MySQL cli but not running,..is there any thing wrong in the command? 回答1: You are supposed to run that on the command line of your operating system not on the MySQL CLI. cd to the bin folder of MySQL first, something like C:\mysql\bin or wherever your MySQL is installed on 回答2: If the mysqldump

mysql日志、数据备份与恢复

由 江枫思渺然 提交于 2019-12-06 15:17:34
Mysql体系结构 MySQL属于Client/Server结构，Server端程序为mysqld，该服务启动后，Client端程序从本地或者远程连接Server 常见的Client程序，例如：mysql、mysqldump、mysqlshow、mysqlbinlog等，也包括通过MySQL API和连接器连接到MySQLD的各类编程语言程序 mysqld程序为服务器进程可以划分为下面三个层 连接层：处理连接 SQL 层：处理所连接的应用程序发送的 SQL 查询 存储层：处理数据存储，MySQL数据可以按不同格式和结构存储在不同物理介质上，也称为存储引擎 mysql连接层 通过多种通信方式接受来自客户机的连接请求 包括如下协议 | 方式 | 连接类型 | 支持的操作系统 | | -------------- | ---------- | -------------- | | TCP/IP | 本地、远程 | 所有 | | UNIX套接字文件 | 仅本地 | UNIX | | 共享内存 | 仅本地 | Windows | | 命名管道 | 仅本地 | Windows | sql层 建立连接后，MySQL 服务器将处理以下任务： 授权和解析器：解析器验证语法是否正确，然后，授权验证是否允许所连接的用户运行特定查询 (已验证通过的用户是否具有访问数据库对象的权限) 优化器

Mysql 定时备份(mysqldump)

由 扶醉桌前 提交于 2019-12-06 14:23:33
#!/bin/bash today=`date +%Y-%m-%d` deleday=`date -d '7 day ago' +%Y-%m-%d` path=/home/data/mysqlbackup cd $path mysqldump -P3307 -h192.168.2.202 -uroot -p123456 --opt x1 | gzip > x1.sql.$today.gz mysqldump -h192.168.2.209 -uroot -proot123 --opt x2 | gzip > x2.sql.$today.gz sleep 2 scp -P 65000 x1.sql.$today.gz 192.168.2.109:$path/ scp -P 65000 x2.sql.$today.gz 192.168.2.109:$path/ sleep 2 rm -f x1.sql.$deleday.gz rm -f x2.sql.$deleday.gz ssh -p 65000 192.168.2.109 /bin/rm -f $path/x1.sql.$deleday.gz ssh -p 65000 192.168.2.109 /bin/rm -f $path/x2.sql.$deleday.gz 来源： https://www.cnblogs.com

mysql escaping single and double quotes

由 我的未来我决定 提交于 2019-12-06 12:18:53
I have a script that i am writing to move certain fields to a new db like $results = mysql_query ( "SELECT body, title FROM $source_db.Post" ); while ($row = mysql_fetch_array($results)) { if(mysql_num_rows($users_result) > 0){ $insert = "INSERT INTO wp_posts (`body`,`title`) VALUES ('{$row['body']}', '{$row['row']}')"; mysql_query($insert); } } but as you can see the query will break everytime due to the single and double quotes, is there a solution to this problem like herdok or something INSERT INTO wp_posts (`body`,`title`) VALUES ('Here are the final returns from today's ...<br /><br />he

mysql用mysql workbench导出sql报错MySQL Workbench: mysqldump version mismatch

由 流过昼夜 提交于 2019-12-06 10:23:17
MySQL Workbench: mysqldump version mismatch Windows10 64bit系统下，步骤就是： Edit --> preferences --> Administrator --> Path to mysqldump tool: 将其路径设为：C:\Program Files\MySQL\MySQL Server 5.7\bin\mysqldump.exe 来源： https://www.cnblogs.com/yanqb/p/11977330.html

Unable to restore a MYSQL backup to a new Database

由 纵饮孤独 提交于 2019-12-06 09:51:54
问题 I successfully created a mysqldump file myDump.sql of a myDb1 database using guidelines from this thread. Also I created a second database myDb2 , navigated to the directory containing myDump.sql and trying to restore it into the new database myDb2 but failing, Two methods I tried: > mysql -u root -p myDb2 < myDump.sql; > -- entered password and: > mysql -u root -p mysql> -- entered password mysql> USE myDb2; mysql> SOURCE myDump.sql; Both have the same error message: ERROR: ASCII '\0'

MYSQL DBDump Error message

由 梦想的初衷 提交于 2019-12-06 09:46:43
I need to get a DBDUMP, i am using MySQL. I get the following error when i try to get a DB Dump. Any clue what it did wrong. C:\Program Files\MySQL\MySQL Server 5.1\bin>mysqldump -u root -p xxx myDB e > dump.sql Enter password: *** mysqldump: Got error: 1049: Unknown database 'xxx' when selecting the database JMM That command is saying you want to enter the password at the prompt and dump the myDB table from the xxx database. If you get rid of the "xxx" part and enter the password at the prompt, it should work. If you actually want to specify the password on the command line, you have to do

Split string into row

由 邮差的信 提交于 2019-12-06 09:40:24
问题 I am using MySQL. I have a table named " class ", the " class " table has three columns name , year and class_code like following: Class table: Now I would like to use the above table to create a new table named " temp ", which contains class_code and value columns. The rule is that each string value in each column field of a row of the above " class " table will be split into words, and each word will be inserted to the " temp " table as value column of a temp table record like following:

常用mysql命令大全

由 孤街醉人 提交于 2019-12-06 08:03:33
常用的MySQL命令大全 连接MySQL 格式： mysql -h主机地址 -u用户名 －p用户密码 1、例1：连接到本机上的MYSQL。 首先在打开DOS窗口，然后进入目录 mysqlbin，再键入命令mysql -uroot -p，回车后提示你输密码，如果刚安装好MYSQL，超级用户root是没有密码的，故直接回车即可进入到MYSQL中了，MYSQL的提示符是： mysql>。 2、例2：连接到远程主机上的MYSQL。假设远程主机的IP为：110.110.110.110，用户名为root,密码为abcd123。则键入以下命令： mysql -h110.110.110.110 -uroot -pabcd123 （注:u与root可以不用加空格，其它也一样） 3、退出MYSQL命令： exit （回车）。 修改密码 格式：mysqladmin -u用户名 -p旧密码 password 新密码 1、例1：给root加个密码ab12。首先在DOS下进入目录mysqlbin，然后键入以下命令： mysqladmin -uroot -password ab12 注：因为开始时root没有密码，所以-p旧密码一项就可以省略了。 2、例2：再将root的密码改为djg345。 mysqladmin -uroot -pab12 password djg345 增加新用户。（注意：和上面不同
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