group by month and year, count from another table

Question

im trying to get my query to group rows by month and year from the assignments table, and count the number of rows that has a certain value from the leads

Answer 1

Start with

SELECT 
  MONTHNAME(FROM_UNIXTIME(a.date_assigned)) as d_month, 
  YEAR(FROM_UNIXTIME(a.date_assigned)) as d_year, 
  SUM(IF(l.website='newsite.com',1,0) AS d_new,
  SUM(IF(l.website IS NOT NULL AND l.website!='newsite.com',1,0) AS d_subprime
FROM assignments AS a
LEFT JOIN leads AS l ON l.id = a.id_lead
WHERE id_dealership='$id_dealership2'
GROUP BY 
  d_month, 
  d_year
ORDER BY
    d_year asc,
    MONTH(FROM_UNIXTIME(a.date_assigned)) asc

and work from here: The field id_dealership is neither in leads nor in assignments, so you need more work.

If you edit your question to account for id_dealership we might be able to help you further.