Question

My SQL

SELECT nce.id, nce.send, count( * ) AS total
FROM `newsletter_email` nce
WHERE 1
GROUP BY nce.id, nce.send

Produces the result:

id  send    total
4   0       6
4   1       1
5   0       2
6   1       7
7   1       4
8   0       2
8   1       4
9   1       1

But I want the result to be:

id  send    no_send     total
4   6       1           7
5   0       2           2
6   7       0           7
7   4       0           4
8   4       2           6
9   1       0           1

I have tried several ways but it did not give the expected result. Can you help?

Answer 1

Assuming Send has value of 1 for send and 0 for no_send, you can simply sum values of send:

SELECT nce.id, 
   sum(nce.send) as Send, 
   sum(1 - nce.send) as NO_send, 
   count(nce.send) as Total
FROM `newsletter_email` nce
GROUP BY nce.id

However, general pattern would be:

SELECT nce.id, 
   sum(case when nce.send = 1 then 1 end) as Send, 
   sum(case when nce.send = 0 then 1 end) as NO_send, 
   count(nce.send) as Total
FROM `newsletter_email` nce
GROUP BY nce.id