Difference between revisions of "Mysql examples"
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echo SELECT \* FROM employees INTO OUTFILE \'/tmp/employees.csv\' FIELDS TERMINATED BY \',\' ENCLOSED BY \'\"\' LINES TERMINATED BY \'\\n\' | mysql -u root -p company | echo SELECT \* FROM employees INTO OUTFILE \'/tmp/employees.csv\' FIELDS TERMINATED BY \',\' ENCLOSED BY \'\"\' LINES TERMINATED BY \'\\n\' | mysql -u root -p company | ||
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| + | or using a here string and cleaner quotes: | ||
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| + | mysql -p company <<< "SELECT * FROM employees INTO OUTFILE '/tmp/employees.csv' FIELDS TERMINATED BY ',' ENCLOSED BY '\"' LINES TERMINATED BY '\n'" | ||
Revision as of 17:16, 20 June 2015
Contents
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
or using a here string and cleaner quotes:
mysql -p company <<< "SELECT * FROM employees INTO OUTFILE '/tmp/employees.csv' FIELDS TERMINATED BY ',' ENCLOSED BY '\"' LINES TERMINATED BY '\n'"
