Database

These are all for MySQL

MySQL can have quite messy output when running queries from the mysql cli. You can terminate a statement with \G instead of ; to format as a list instead of table.

SELECT * FROM users\G

replace *.* with schema.table if needed

GRANT ALL PRIVILEGES ON *.* TO 'username'@'localhost';

UPDATE employees SET email = 'user@domain.com' WHERE id = 123;

SELECT 
  a.*
FROM 
  map_ads_categories m
  JOIN ads a ON (m.ad_id = a.id)
WHERE
  m.category_id = 28;

SELECT 
  *
FROM 
  map_ads_categories m
  JOIN ads a ON (m.ad_id = a.id)
  JOIN categories c ON (m.category_id = c.id)
WHERE
  c.id = 28;