mysql subquery for charts - mysql

Question

I have 2 tables with the following data
inviteTable
inviteDate | contractAmount | status
2014-01-01 1500 awarded
2015-01-01 2000 awarded
2015-01-02 4000 closed
2015-02-01 6000 awarded
2015-02-02 8000 awarded
2015-03-01 8500 awarded
quoteTable
quoteDate | quoteAmount | status
2014-03-01 1500 awarded
2015-01-02 2000 awarded
2015-01-03 4000 sent
2015-01-04 6000 awarded
2015-02-03 8000 awarded
2015-02-10 8500 sent
2015-02-11 9000 awarded
2015-03-01 9500 awarded
I want to make ONE query that gives me the following data structure
month | quotedTotal | quotedCount | awardedTotal | awardedCount
January 8000 2 2000 1
February 17000 2 14000 2
March 9500 1 8500 1
currently i have written this code...but it doesn't work
SELECT
MONTHNAME(t1.due_date) as month,
(select sum(`amount`) from quoteTable where awarded= 1 ) as estimatedAmount,
sum(t1.contactAmount) AS sumContactAmount,
COUNT(*) as `noOfAwarded`
FROM inviteTable t1
where
t1.status = "Awarded" and
t1.inviteDate between '2014-11-01' and '2015-10-31'
GROUP BY MONTH(due_date)
;
basically I want to have ONE query that gives me the following:
volume that got awarded - sum of contractAmount and status awarded
count of how many awarded - count of inviteTable.status=awarded
volume that got quoted - sum of quoteAmount and status awarded
count of how many quoted - count of quotedTable.status=awarded
all grouped by month and in a date range
my query doesn't work. Your help would be highly appreciated as I am stuck!

Answer 1

Your schema is unfortunate; it would be easier if you have just one table with an extra column to record what type of record you have. However, if you first collect the two tables into one table via union all, you can use a fairly simple query to produce the results to want:
select
monthname(_date) month,
sum(quoteAwarded * amount) quotedTotal,
sum(quoteAwarded) quotedCount,
sum(contractAwarded * amount) awardedTotal,
sum(contractAwarded) awardedCount
from (select inviteDate _date, contractAmount amount, status = 'awarded' contractAwarded, 0 quoteAwarded from inviteTable
union all
select quoteDate, quoteAmount, 0, status = 'awarded' from quoteTable) x
where _date between '2014-11-01' and '2015-10-31'
group by 1
order by month(_date)
See SQLFiddle using your sample data, and producing you expected output.
At the core of this query is the convenient fact that (in mysql) "true" is 1 and "false" is 0 - allowing the use of sum() instead of count(), and more importantly avoiding the use of case by using sum() over some simple math.

Answer 2

Here is a way you can do it, note that you have dates in both tables and you need to use join preferably left join , so this will ensure that the dates present in the left table is always returned in this case the month name.
select
t1.month,
t1.awardedTotal,
t1.awardedCount,
t2.quotedTotal,
t2.quotedCount
from(
select
monthname(t1.inviteDate) as month,
month(t1.inviteDate) as m,
sum(
case
when t1.status = 'awarded' then t1.contractAmount else 0
end
) as awardedTotal,
sum(
case
when t1.status = 'awarded' then 1 else 0
end
) as awardedCount
from inviteTable t1
where t1.inviteDate between '2014-11-01' and '2015-10-31'
group by month
)t1
left join(
select
monthname(t2.quoteDate) as month,
sum(
case
when t2.status = 'awarded' then t2.quoteAmount else 0
end
) as quotedTotal,
sum(
case
when t2.status = 'awarded' then 1 else 0
end
) as quotedCount
from quoteTable t2
where t2.quoteDate between '2014-11-01' and '2015-10-31'
group by month
)t2 on
t1.month = t2.month
order by t1.m
http://sqlfiddle.com/#!9/a863a/10
UPDATE:
Yes since you want dates present in both tables it can not be done with the above process since it always consider one table as left table and will get all the dates from that table. For getting data for all the dates across both tables you first need to get the dates from both tables and then using left join get the calculation part something as
select
t1.month,
coalesce(t2.awardedTotal,0) as awardedTotal,
coalesce(t2.awardedCount,0) as awardedCount,
coalesce(t3.quotedTotal,0) as quotedTotal,
coalesce(t3.quotedCount,0) as quotedCount
from(
select month(inviteDate) as m,monthname(inviteDate) as month
from inviteTable where inviteDate between '2014-11-01' and '2015-10-31'
union
select month(quoteDate) as m,monthname(quoteDate) as month
from quoteTable where quoteDate between '2014-11-01' and '2015-10-31'
)t1
left join(
select
monthname(inviteDate) as month,
sum(
case
when status = 'awarded' then contractAmount else 0
end
) as awardedTotal,
sum(
case
when status = 'awarded' then 1 else 0
end
) as awardedCount
from inviteTable
group by month
)t2 on t1.month = t2.month
left join(
select
monthname(quoteDate) as month,
sum(
case
when status = 'awarded' then quoteAmount else 0
end
) as quotedTotal,
sum(
case
when status = 'awarded' then 1 else 0
end
) as quotedCount
from quoteTable
group by month
)t3 on t1.month=t3.month
order by t1.m
http://sqlfiddle.com/#!9/ddaac/14