mysqldump

How to Check for Multiple Conditions in Xpath

匿名 (未验证) 提交于 2019-12-03 02:33:02
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试): 问题: I want to retrive PName of the row/field whose id =2 and pAddress=INDIA <?xml version="1.0"?> <mysqldump > <database name="MyDb"> <table name="DescriptionTable"> <row> <field name="id">1</field> <field name="pName">XYZ</field> <field name="pAddress">INDIA</field> <field name="pMobile">1234567897</field> </row> <row> <field name="id">2</field> <field name="pName">PQR</field> <field name="pAddress">UK</field> <field name="pMobile">755377</field> </row> <row> <field name="id">3</field> <field name="pName">ABC</field> <field name="pAddress">USA<

MySQL dump by query

匿名 (未验证) 提交于 2019-12-03 02:11:02
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试): 问题: Is it possible to do mysqldump by single SQL query ? I mean to dump the whole database, like phpmyadmin does when you do export to SQL 回答1: not mysqldump, but mysql cli... mysql -e "select * from myTable" -u myuser -pxxxxxxxxx mydatabase you can redirect it out to a file if you want : mysql -e "select * from myTable" -u myuser -pxxxxxxxx mydatabase > mydumpfile.txt Update: Original post asked if he could dump from the database by query. What he asked and what he meant were different. He really wanted to just mysqldump all tables. mysqldump -

mysqldump with --where clause is not working

匿名 (未验证) 提交于 2019-12-03 02:06:01
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试): 问题: mysqldump -t -u root -p mytestdb mytable --where=datetime LIKE '2014-09%' This is what I am doing and it returns: mysqldump: Couldn't find table: "LIKE" I am trying to return all the rows where the column datetime is like 2014-09 meaning "all September rows". 回答1: You may need to use quotes: mysqldump -t -u root -p mytestdb mytable --where="datetime LIKE '2014-09%'" 文章来源: mysqldump with --where clause is not working

MySQL面试题

不想你离开。 提交于 2019-12-03 01:47:04
1、MySQL的复制原理以及流程 (1)、复制基本原理流程 1. 主:binlog线程——记录下所有改变了数据库数据的语句,放进master上的binlog中; 2. 从:io线程——在使用start slave 之后,负责从master上拉取 binlog 内容,放进 自己的relay log中; 3. 从:sql执行线程——执行relay log中的语句; (2)、MySQL复制的线程有几个及之间的关联 MySQL 的复制是基于如下 3 个线程的交互( 多线程复制里面应该是 4 类线程): 1. Master 上面的 binlog dump 线程,该线程负责将 master 的 binlog event 传到slave; 2. Slave 上面的 IO 线程,该线程负责接收 Master 传过来的 binlog,并写入 relay log; 3. Slave 上面的 SQL 线程,该线程负责读取 relay log 并执行; 4. 如果是多线程复制,无论是 5.6 库级别的假多线程还是 MariaDB 或者 5.7 的真正的多线程复制, SQL 线程只做 coordinator,只负责把 relay log 中的 binlog读出来然后交给 worker 线程, woker 线程负责具体 binlog event 的执行; (3)

mysqldump generates 0kb sql file

匿名 (未验证) 提交于 2019-12-03 01:36:02
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试): 问题: I am working on backup and recovery of mySQL database using mysqldump. My code generates an sql file but its empty. Here's my complete code. Thanks a lot. <? shell_exec("mysqldump -u root -p ilamdb > db/ilamdb.sql"); echo "Back up complete."; ?> 回答1: You used the option -p which tells mysqldump shell_exec("mysqldump -u root --password=yourpassword ilamdb > db/ilamdb.sql"); If you don't use a password, simply leave out this parameter: shell_exec("mysqldump -u root ilamdb > db/ilamdb.sql"); 回答2: MySQL backup syntax should be as below mysqldump

Mysqldump: create column names for inserts when backing up

旧巷老猫 提交于 2019-12-03 01:34:14
问题 How do I instruct mysqldump to backup with column names in insert statements? In my case I didn’t a normal back up with insert sql’s resulting in LOCK TABLES `users` WRITE; /*!40000 ALTER TABLE `users` INSERT INTO `users` VALUES (1 structure. Now I went ahead and removed a column from the schema in users. After this when I run the backup sql’s I get a column number mismatch error . To fix this how do I go about instructing mysqldump to write column names too? Here is how I do it now mysqldump

mysqldump: Error 2020: Got packet bigger than &#039;max_allowed_packet&#039; bytes when dumping table

匿名 (未验证) 提交于 2019-12-03 01:22:02
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试): 问题: mysqldump: Error 2020: Got packet bigger than 'max_allowed_packet' bytes when dumping table happens, when I do a mysqldump -u root -p database >dumpfile.sql I increased max_allowed_packet to the max value already (1073741824) to no avail. How come that one cannot dump a database with mysqls on board means? Cause may be a longblob in a data row/column which may be maximum size of 4 GB (4294967295 bytes). Could it be the network transport being used? Would there be another transport? 回答1: Use below command mysqldump --max_allowed_packet=512M

How to Export & Import Existing User (with its Privileges!)

谁都会走 提交于 2019-12-03 00:58:45
I have an existing MySQL instance (test), containing 2 databases and a few users each having different access privileges to each database. I now need to duplicate one of the databases (into production) and the users associated with it. Duplicating the database was easy : Export: mysqldump --no-data --tables -u root -p secondb >> secondb_schema.sql Import: mysql -u root -p -h localhost secondb < secondb_schema.sql I didn't find, however, a straightforward way to export and import users , from the command line (either inside or outside mysql). How do I export and import a user , from the command

mysqldump exports only one table

邮差的信 提交于 2019-12-03 00:51:59
问题 I was using mysqldump to export the database, like this: mysqldump -u root -ppassword my_database > c:\temp\my_database.sql Somehow, it only exports one table. Is there something I'm doing wrong? 回答1: try this. There are in general three ways to use mysqldump— in order to dump a set of one or more tables, shell> mysqldump [options] db_name [tbl_name ...] a set of one or more complete databases shell> mysqldump [options] --databases db_name ... or an entire MySQL server—as shown here: shell>

Can MySQL reliably restore backups that contain views or not?

此生再无相见时 提交于 2019-12-03 00:14:07
Environment: Ubuntu 11.10, MySQL 5.1.58 I have a small database with views. When I try to dump and restore, I get ERROR 1356 (HY000) at line 1693: View 'curation2.condition_reference_qrm_v' references invalid table(s) or column(s) or function(s) or definer/invoker of view lack rights to use them However, I can connect to the partially-restored database and create the view myself. Therefore, I suspect that the error message results from an issue unrelated to the view itself (but rather how it's restored, perhaps). Here's the simple approach I use to demonstrate the problem: MYSQL_PWD='xxx'