Often times you’ll get requests for a CSV dump of something in your database. From the CLI, I often just run a SELECT statement by hand to see what it is that I want then I get stuck thinking, “now how do I get this to CSV again?”.
Selecting into a CSV outfile isn’t hard, and I’ve done it many times, but everytime I do it I have to look it up so I’ll just blog it here for next time.
SELECT a,b,a+b INTO OUTFILE '/tmp/result.txt' FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '"' LINES TERMINATED BY '\\n' FROM test_table;
When in doubt, blog it out.