Difference between revisions of "Mysql examples"

Revision as of 16:54, 19 June 2015

create a database with a dedicated localhost only user

CREATE DATABASE database;
CREATE USER 'newuser'@'localhost' IDENTIFIED BY 'password';
GRANT ALL ON database.* TO 'newuser'@'localhost';

Change the password of a user

SET PASSWORD FOR 'user'@'host' = PASSWORD('new pw');

add a column to a table

ALTER TABLE exports ADD level VARCHAR(20);

rename or change a colume data type

ALTER TABLE exports CHANGE hostname name  INT

insert some values

INSERT INTO exports (hostname, export) VALUES('fuego', 'sec=sys,rw' )

output to csv

Directly from the mysql cli, or when piped to the mysql client:

SELECT * FROM employees INTO OUTFILE '/tmp/employees.csv' FIELDS TERMINATED BY ',' ENCLOSED BY '"' LINES TERMINATED BY '\n'

With echo in a single line:

echo SELECT \* FROM employees   INTO OUTFILE  \'/tmp/employees.csv\' FIELDS TERMINATED BY \',\' ENCLOSED BY \'\"\' LINES TERMINATED BY \'\\n\' | mysql -u root -p company