I'm moving a locally developed wordpress site to a client's server so I'm trying to export the local database and import it to the server. I exported the .sql file according to the instructions here http://codex.wordpress.org/Backing_Up_Your_Database but I keep getting this error when importing:
DROP TABLE IF EXISTS `wp_commentmeta` ;
MySQL said: Documentation
#1046 - No database selected
Any help very much appreciated. Thanks!
Like the two other answers say: I wasn't importing the backup file to a particular database. I had to create a new database and upload the file to that, and it worked fine.
Try sticking a use statement in front of it:
USE MyWordpressDBName;
DROP TABLE IF EXISTS `wp_commentmeta` ;
MySql Use Reference
You posted a link describing how to backup your database. But the problem you have is not with the backup but with the restore, so you should look at the instructions on how to restore your database.
Luckily that site also has instructions on how to restore a database from a backup (any guide which only tells you how to backup but not how to restore is IMHO a waste of time). Try following the instructions on this page:
http://codex.wordpress.org/Restoring_Your_Database_From_Backup
In particular notice this command near the end of the tutorial:
mysql -h mysqlhostserver -u mysqlusername -p databasename < blog.bak.sql
The database name must be specified.
Related
I am using MYSQL Workbench and I want to clone a database on the same server with different name. It should duplicate the all the tables structure and data into the new database.
I know the usual way is probably using data export to generate a sql script of the database and then run the script on the new database but I encounter some issues with it.
Anyway, is there any better way or easier way to do so?
You can use migration wizard from MySQL Workbench. Just choose the same local connection in both source and target selection, then change schema name on manual editing step. If nothing appears on manual editing step click next and the source and targets will appear. Click slowly on the source database name and edit to the correct name. Go thorough to the end and voilà - you have two identical databases with different names. Note you must have created the target database already and granted permissions to it for the MySQL Workbench user.
I tried to do it in MySQL Workbench 8.0. However I kept receiving an error regarding column-statics. The main idea is to use mysqldump.exe, located in the installation directory of MySQL Workbench, to export the data. So, supposing a Windows oriented platform:
Open Powershell, navigate to mysqldump.exe directory. In my case the command is:
cd C:\Program Files\MySQL\MySQL Workbench 8.0 CE
Export database by executing mysqldump providing the right arguments:
./mysqldump.exe --host=[hostServerIP] --protocol=tcp --user=[nameOfUser] --password=[yourPassword] --dump-date=FALSE --disable-keys=FALSE --port=[portOfMysqlServer] --default-character-set=utf8 --skip-triggers --column-statistics=0 "[databaseName]"
Without changing directory, import the exported file (.sql) by using the following command in Powershell:
Get-Content "[pathToExportedDataFile]" | ./mysql.exe --user=[nameOfUser] --password=[yourPassword] --port=[portOfMysqlServer] --host=[hostServerIP] --database=[nameOfNewDatabase] --binary-mode=1
You can check in the documentation here for more information regarding the mysqldump options.
Please note the following:
Do not forget to replace the values in [] with your own values and remove the []. Do not remove the quotes("") where the are present.
Do not switch Powershell for cmd or something like git-bash, since the above will not work.
As far as step 3 is concerned, I created the new database from MySQL Workbench and then ran the powershell command.
List item First, create a new database using CREATE DATABASE statement.
Second, export all the database objects and data of the database from which you want to copy using mysqldump tool.
Third, import the SQL dump file into the new database.
I have a problem when I backup my database from old server to the new one. Both run Ubuntu. The difference is the old database is using phpmyadmin 1.6.3 and the new one is 5.7.21. I lost some tables but it appear in the sidebar. Can anyone describe to me what is going on with my db? Here is the screenshot.
to be clear, here is the screenshot of my old database phpmyadmin interface.
You may try stop and start the mysqld service.
If the error still exists then back up the database file and drop it then import again to a newly created database.
**commands may be OS specific
follow instructions from : MySQL Site
The problem is, that one MYI and one MYD file from MySQL database has been accidentally deleted. The only file left intact is FRM one. Only one table from the whole database is damaged that way, all other tables are OK and the database works generally fine, except the table with deleted files, which is obviously inaccessible.
There's a full database dump in pure SQL format available.
The question is, how do I re-create these files and table in safe and proper manner?
My first idea was to extract the full create table command from the dump and run it on live database. It's not so easy, as the whole dump file has over 10GB, so any operations within its content are really pain in . Yes, I know about sed and know how to use it - but I consider it the last option to choose.
Second and current idea is to create copy of this database on independent server, make a dump of the table in question and then use resulting SQL file to create the table again on the production server. I'm not quite experienced with MySQL administration tasks (well, just basic ones), but for me this option seems to be safe and reasonable.
Will the second option work as I expect?
Is it the best option, or are there any more recommendable solutions?
Thank you in advance for your help.
The simplest solution is to copy the table you deleted. There's a chance mysqld still has an open file handle to the data files you deleted. On UNIX/Linux/OS X, a file isn't truly deleted while some process still has an open file handle to it.
So you might be able to do this:
mysql> CREATE TABLE mytable_copy LIKE mytable;
mysql> INSERT INTO mytable_copy SELECT * FROM mytable;
If you've restarted MySQL Server since you deleted the files, this won't work. If the server has closed its file handle to the data file, this won't work. If you're on Windows, I have no idea.
The next simplest solution is to restore your existing 10GB dump file to a temporary instance of MySQL Server, as you said. I'd use MySQL Sandbox but some people would use a virtual machine, or if you're using an AWS environment, launch a spot EC2 instance or a small RDS instance.
Then dump just the table you need:
mysqldump -h tempserver mydatabase mytable > mytable.sql
Then restore it to your real server.
mysql -h realserver mydatabase < mytable.sql
(I'm omitting the user & password options, I prefer to put those in .my.cnf anyway)
I have set up a new database with phpMyAdmin, but when I log in to MySQL through terminal (Mac OS X 10.9.5) it doesnt show up the new database i created. it only shows 'information_schema' and 'test'.
Is there a certain directory I should go to in terminal before starting mySQL?
You might be using two different schemas for MySQL server and in phpMyAdmin.
As a check, you can try creating a table from terminal, and see if it gets reflected in phpMyAdmin, create table A (a varchar(), b varchar() ). If the new table doesnot appear from the browser (phpMyAdmin) probably you are logging in from two different schemas.
Also FYI: It doesnot matter from which directory do you login to MySQL.
Hope it helps.. :)
When I log into mySQL using "mysql -u root -p" i can access all the databases.
I'm trying to learn SQL and I downloaded a database to practice. I downloaded two files of extension .sql, one is the schema and the other one the actual data. I've also installed MySQL Workbench. I've been googling and I've been trying things to solve this but I don't understand Workbench and I can't load the database.
Where do I import the schema and the data in order to try queries ?
Any help would be really appreciated.
This is simple in Workbench, and I'll use the freely available sakila database as an example. Feel free to apply this to your situation:
Download "sakila" from here: http://dev.mysql.com/doc/index-other.html
Extract it somewhere, in my case, onto the Desktop into a new sakila-db/ directory
Open Workbench
In the Schema Navigator, right-click an empty area and choose "Create Schema"
In the schema creation wizard, name it "sakila", keep the defaults, hit "Apply", finish wizard
Go to "File" -> "Run SQL Script..."
Choose "sakila-schema.sql", make sure "Default Schema Name" is blank or select "sakila", execute
Go to "File" -> "Run SQL Script..."
Choose "sakila-data.sql", execute
Click the "refresh" icon in the Workbench Schema Navigator (or restart Workbench)
Now, use the populated sakila database :)
Steps (4) and (5) are optional in this case (as executing sakila-schema.sql creates the schema), but the idea is worth mentioning.
Here's how it would look when loading th script into the SQL IDE:
The accepted answer is from 4 years ago, so I thought I'd give an update as in MySQL Workbench 6.3 the procedure is a bit different.
You have to select the menu item Server -> Data Import -> Import from Self-Contained File and select the SQL file containing the database you want to import.
In Default Target Schema, select the database you want to import the SQL dump to, or create a new empty database via New...
Then click on Start Import.
You could use mysql console from terminal. Login through the user id and pass. Then create a Database from the following command is the .sql file does not have one such command to create so.
Create database db-name
use db-name;
SOURCE xyz.sql;
Source command would load the the content from xyz.sql to your database created. This would be reflected later in workbench indeed.
Its very easy on Linux platform just follow below mentioned steps, After downloading zip file of sakila-db, extract it. Now you will have two files, one is sakila-schema.sql and other one is sakila-data.sql.
Open terminal
Enter command mysql -u root -p < sakila-schema.sql
Enter command mysql -u root -p < sakila-data.sql
Now enter command mysql -u root -p and enter your password, now you have entered into mysql system with default database.
To use sakila database, use this command use sakila;
To see tables in sakila-db, use show tables command
Please take care that extracted files are present in home directory else provide the absolute path of these files in all above commands.