Home Can I restore a single table from a full mysql mysqldump file?

# Can I restore a single table from a full mysql mysqldump file?

Mobius
1#
Mobius Published in 2009-06-18 16:50:32Z
 I have a mysqldump backup of my mysql database consisting of all of our tables which is about 440 megs. I want to restore the contents of just one of the tables form the mysqldump. Is this possible? Theoretically, I could just cut out the section that rebuilds the table I want but I don't even know how to effectively edit a text document that size.
sjas
2#
 You can try to use sed in order to extract only the table you want. Let say the name of your table is mytable and the file mysql.dump is the file containing your huge dump: $sed -n -e '/CREATE TABLE.*mytable/,/CREATE TABLE/p' mysql.dump > mytable.dump  This will copy in the file mytable.dump what is located between CREATE TABLE mytable and the next CREATE TABLE corresponding to the next table. You can then adjust the file mytable.dump which contains the structure of the table mytable, and the data (a list of INSERT). sjas 3# sjas Reply to 2016-08-10 09:55:33Z  I used a modified version of uloBasEI's sed command. It includes the preceding DROP command, and reads until mysql is done dumping data to your table (UNLOCK). Worked for me (re)importing wp_users to a bunch of Wordpress sites. sed -n -e '/DROP TABLE.*mytable/,/UNLOCK TABLES/p' mydump.sql > tabledump.sql  Chris Forrence 4# Chris Forrence Reply to 2013-04-25 12:58:25Z  This can be done more easily? This is how I did it: Create a temporary database (e.g. restore): mysqladmin -u root -p create restore Restore the full dump in the temp database: mysql -u root -p restore < fulldump.sql Dump the table you want to recover: mysqldump restore mytable > mytable.sql Import the table in another database: mysql -u root -p database < mytable.sql Brom558 5# Brom558 Reply to 2013-08-08 09:34:24Z  A simple solution would be to simply create a dump of just the table you wish to restore separately. You can use the mysqldump command to do so with the following syntax: mysqldump -u [user] -p[password] [database] [table] > [output_file_name].sql  Then import it as normal, and it will only import the dumped table. JCCyC 6# JCCyC Reply to 2009-06-18 16:57:00Z  One way or another, any process doing that will have to go through the entire text of the dump and parse it in some way. I'd just grep for INSERT INTO the_table_i_want  and pipe the output into mysql. Take a look at the first table in the dump before, to make sure you're getting the INSERT's the right way. Edit: OK, got the formatting right this time. Maxime Biette 7# Maxime Biette Reply to 2013-09-18 12:40:00Z  You should try @bryn command but with the  delimiter otherwise you will also extract the tables having a prefix or a suffix, this is what I usually do: sed -n -e '/DROP TABLE.*mytable/,/UNLOCK TABLES/p' dump.sql > mytable.sql  Also for testing purpose, you may want to change the table name before importing: sed -n -e 's/mytable/mytable_restored/g' mytable.sql > mytable_restored.sql  To import you can then use the mysql command: mysql -u root -p'password' mydatabase < mytable_restore.sql  vicvicvic 8# vicvicvic Reply to 2015-02-23 11:10:33Z  Backup $ mysqldump -A | gzip > mysqldump-A.gz  Restore single table $mysql -e "truncate TABLE_NAME" DB_NAME$ zgrep ^"INSERT INTO \TABLE_NAME" mysqldump-A.gz | mysql DB_NAME 
Tim Hoolihan
9#
Tim Hoolihan Reply to 2009-06-18 16:57:48Z
 One possible way to deal with this is to restore to a temporary database, and dump just that table from the temporary database. Then use the new script.
user1097790
10#
 This tool may be is what you want: tbdba-restore-mysqldump.pl https://github.com/orczhou/dba-tool/blob/master/tbdba-restore-mysqldump.pl e.g. Restore a table from database dump file: tbdba-restore-mysqldump.pl -t yourtable -s yourdb -f backup.sql
peter
11#
 This may help too. # mysqldump -u root -p database0 > /tmp/database0.sql # mysql -u root -p -e 'create database database0_bkp' # mysql -u root -p database0_bkp < /tmp/database0.sql # mysql -u root -p database0 -e 'insert into database0.table_you_want select * from database0_bkp.table_you_want' 
Bryan Migliorisi
12#
Bryan Migliorisi Reply to 2009-06-18 16:58:53Z
 Most modern text editors should be able to handle a text file that size, if your system is up to it. Anyway, I had to do that once very quickly and i didnt have time to find any tools. I set up a new MySQL instance, imported the whole backup and then spit out just the table I wanted. Then I imported that table into the main database. It was tedious but rather easy. Good luck.
mqqn
13#
 wouldn't it be much easier to just create a test database, restore the whole database, then dump the single table to a file - then restore the data to your "production" database?
mtoloo
14#
 You can use vi editor. Type: vi -o mysql.dump mytable.dump  to open both whole dump mysql.dump and a new file mytable.dump. Find the appropriate insert into line by pressing / and then type a phrase, for example: "insert into mytable", then copy that line using yy. Switch to next file by ctrl+w then down arrow key, paste the copied line with pp. Finally save the new file by typing :wq and quite vi editor by :q. Note that if you have dumped the data using multiple inserts you can copy (yank) all of them at once using Nyy in which N is the number of lines to be copied. I have done it with a file of 920 MB size.
Cameron
15#
 Get a decent text editor like Notepad++ or Vim (if you're already proficient with it). Search for the table name and you should be able to highlight just the CREATE, ALTER, and INSERT commands for that table. It may be easier to navigate with your keyboard rather than a mouse. And I would make sure you're on a machine with plenty or RAM so that it will not have a problem loading the entire file at once. Once you've highlighted and copied the rows you need, it would be a good idea to back up just the copied part into it's own backup file and then import it into MySQL.
Kuyenda
16#
 The chunks of SQL are blocked off with "Table structure for table my_table" and "Dumping data for table my_table." You can use a Windows command line as follows to get the line numbers for the various sections. Adjust the searched string as needed. find /n "for table " sql.txt The following will be returned: ---------- SQL.TXT [4384]-- Table structure for table my_table [4500]-- Dumping data for table my_table [4514]-- Table structure for table some_other_table ... etc. That gets you the line numbers you need... now, if I only knew how to use them... investigating.
JaredC
17#
 Back in '08 I had a need to do this too. I wrote a Perl script that'll do it, and it's now my method of choice. Also summarized how to do it in awk or how to restore elsewhere and extract. Recently I added this sed method to the list as well. You can find the script and the other methods here: http://blog.tsheets.com/2008/tips-tricks/extract-a-single-table-from-a-mysqldump-file.html
Community
18#
 sed -n -e '/-- Table structure for table my_table_name/,/UNLOCK TABLES/p' database_file.sql > table_file.sql  This is a better solution than some of the others above because not all SQL dumps contain a DROP TABLE statement. This one will work will all kinds of dumps.
 The 'sed' solutions mentioned earlier are nice but as mentioned not 100% secure You may have INSERT commands with data containing: ... CREATE TABLE...(whatever)...mytable... or even the exact string "CREATE TABLE mytable;" if you are storing DML commands for instance! (and if the table is huge you don't want to check that manually) I would verify the exact syntax of the dump version used, and have a more restrictive pattern search: Avoid ".*" and use "^" to ensure we start at the begining of the line. And I'd prefer to grab the initial 'DROP' All in all, this works better for me: sed -n -e '/^DROP TABLE IF EXISTS \mytable\;/,/^UNLOCK TABLES;/p' mysql.dump > mytable.dump `