SQL Notes

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Revision as of 19:47, 5 June 2019 by Andre (talk | contribs) (Created page with " = How to pull and load data from SELECT query = 05.06.2019 * login to mariadb use wiki2016; SELECT * INTO OUTFILE 'pages.dat' FROM wiki2016.page WHERE page_id < 10 AND p...")
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How to pull and load data from SELECT query

05.06.2019

  • login to mariadb
use wiki2016;
SELECT * INTO OUTFILE 'pages.dat' FROM wiki2016.page WHERE page_id < 10 AND page_namespace = 0;

Pages pages.dat stored in /var/lib/mysql/wiki2016

dump only the db schema without data

$ mysqldump --user=andre --default-character-set=utf8 --no-data --skip-triggers "wiki2016" -p

create a new db

CREATE DATABASE wikitest;

and import the import schema

$ mysql --user=andre wikitest -p < wiki2016.sql 
LOAD DATA INFILE '/var/lib/mysql/wiki2016/pages.dat' REPLACE INTO TABLE wikitest.page;
use wikitest;
SELECT * FROM page;
use wikitest;
SELECT * FROM page;