Join Queries together in one - mysql

Question

I have a two queries that I joined together with UNION ALL to do a count one for mobile leads and the other for web leads. But not exactly sure how to join the two results into one. Here is my query:
SELECT CAST( submitdate AS DATE ) as submitdate, COUNT( DISTINCT name, email, phone, `make` , `model` , `mdlyr` , `miles` ) AS webcount FROM leads WHERE email <> '' and mobile = '0' GROUP BY CAST( submitdate AS DATE )
UNION ALL
SELECT CAST( submitdate AS DATE ) as submitdate, COUNT( DISTINCT name, email, phone, `make` , `model` , `mdlyr` , `miles` ) AS mobilecount FROM leads WHERE email <> '' and mobile = '1' GROUP BY CAST( submitdate AS DATE )
But my results are two columns that says submitdate, webcount and the dates are duplicated and with counts next to them like this:
submitdate | webcount
2014-03-19 | 30
2014-03-19 | 15
2014-03-18 | 59
2014-03-18 | 37
When I am trying to get it to look like this:
submitdate | webcount | mobilecount
2014-03-19 | 30 | 15
2014-03-18 | 59 | 37
What am I doing wrong?

Answer 1

Here is a pivot approach. Use your union, but as a "PreQuery". I added one extra column to identify the origin as web or mobile by a character. From that, I use that at the outer level and do a group by date, but a sum of whatever count, but only based on the web or mobile flag value.
select
PQ.submitdate,
sum( case when PQ.leadOrigin = 'W' then PQ.DateCnt else 0 end ) as WebCount,
sum( case when PQ.leadOrigin = 'M' then PQ.DateCnt else 0 end ) as MobileCount
from
( SELECT
CAST( submitdate AS DATE ) as submitdate,
MAX( 'W' ) as leadOrigin,
COUNT( DISTINCT name, email, phone, `make` , `model` , `mdlyr` , `miles` ) AS DateCnt
FROM
leads
WHERE
email <> ''
and mobile = '0'
GROUP BY
CAST( submitdate AS DATE )
UNION ALL
SELECT
CAST( submitdate AS DATE ) as submitdate,
MAX( 'M' ) as leadOrigin,
COUNT( DISTINCT name, email, phone, `make` , `model` , `mdlyr` , `miles` ) AS DateCnt
FROM
leads
WHERE email <> ''
and mobile = '1'
GROUP BY CAST( submitdate AS DATE ) ) PQ
group by
PQ.submitdate

Answer 2

I was able to do this query:
SELECT a.submitdate, b.webcount, c.mobilecount
FROM (
SELECT DISTINCT CAST( submitdate AS DATE ) AS submitdate FROM leads) AS a
INNER JOIN
(SELECT CAST( submitdate AS DATE ) AS submitdate, COUNT( DISTINCT name, email, phone, `make` , `model` , `mdlyr` , `miles` ) AS webcount FROM leads WHERE email <> '' AND mobile = '0' GROUP BY CAST( submitdate AS DATE )) AS b ON a.submitdate = b.submitdate
INNER JOIN
(SELECT CAST( submitdate AS DATE ) AS submitdate, COUNT( DISTINCT name, email, phone, `make` , `model` , `mdlyr` , `miles` ) AS mobilecount FROM leads WHERE email <> '' AND mobile = '1' GROUP BY CAST( submitdate AS DATE )) AS c ON b.submitdate = c.submitdate
ORDER BY a.submitdate DESC
But it only gives me dates from 3/16/2014, which is when Mobile has a count higher than 0. Is there something to add to this that will include all dates and default to 0 if there is none?