Combining data from SQL query

Question

Hoping there is a SQL guru out there that can help me with this
I have two tables that I want to pull data from and display a report, based on a particular date range, for this example let's say 08/01/2011 to 08/31/2011
In one table there would be an affiliate ID - AFF_UID and also the date and a counter for that date, IMP_COUNTER , now there may only be a few records not every day might be covered, say
TABLE IMP
date,aff_uid,imp_counter
08/01/2011,999,2000
08/02/2011,999,2050
08/20/2011,999,2030
etc
I then have another date, similar set up only there are multiple records in here for a single day, again not all days covered, I would need to total up each row for each day to get a count. So it might be:
TABLE LEAD
date,aff_uid
08/01/2011,999
08/01/2011,999
08/01/2011,999
08/01/2011,999
08/12/2011,999
So we have different dates covered, sometimes the same date, I need the counter from the first table, and from the second table I need to add them up for a total, and then display any date that has a value and put both counter and lead count together
Result from above
date,imp total,lead total
08/01/2011,2000,4
08/02/2011,2050,0
08/12,2011,0,1
08/20/2011,2030,0
I am sure there must be a SQL command that can gel all of this together with some grouping? Last thing I need is a ton of SQL statements in a loop!
My alternative is to add a counter to the IMP table for each lead, so every time I update the lead table with a record, I will also update the counter, but that's unncessary storage of data I already have an an extra update statement that I might be able to do without, but maybe it would make generating reports faster, just pulling to counters with no 'addition' required.
Appreciate any feedback
Thanks
Mark

Answer 1

Well I thought that I had this one up and running, but once it went into production I found that it didn't give the desired results.
I have an account that has 3 'tracking'/aff accounts, so what it's doing is giving out 3 lines for each date rather than join them together into one. The values are also incorrect, I'm still trying to figure out just where it's even getting those numbers, I manually added up the numbers in the dbase and it didn't match
Here's the command
<CFQUERY name="GetStats" DATASOURCE="#datasource#">
SELECT
COALESCE(IMP.imp_date, LEAD.lead_date) AS report_date
, COALESCE(IMP.imp_counter,0) AS imp_counter
, COALESCE(LEAD.lead_count,0) AS lead_count
, COALESCE(LEAD.lead_aff_payment,0) AS lead_aff_payment
FROM
SELECT
imp_date
, imp_counter
FROM impressions
WHERE imp_date BETWEEN #createODBCdate(form_from)# AND #createODBCdate(form_to)#
<CFIF #val(ListGetAt(form_aff_UID,1))# IS "3">
AND imp_aff_uid  IN (SELECT aff_uid FROM aff WHERE aff_master_uid = #session.aff_uid#)
<CFELSEIF #val(ListGetAt(form_aff_UID,1))# IS "2">
AND imp_aff_uid  = #val(ListGetAt(form_aff_UID,2))#
<CFELSE>
AND imp_aff_uid  IN (SELECT aff_uid FROM aff WHERE aff_sub_uid = #val(ListGetAt(form_aff_uid,2))# AND aff_master_uid = #session.aff_uid#)
</CFIF>
) AS IMP
FULL OUTER JOIN
SELECT
lead_date, COUNT(*) AS lead_count, SUM(lead_aff_payment) AS lead_aff_payment
FROM leads
WHERE lead_date BETWEEN #createODBCdate(form_from)# AND #createODBCdate(form_to)#
AND lead_data_status = 1
<CFIF #val(ListGetAt(form_aff_UID,1))# IS "3">
AND lead_aff_uid  IN (SELECT aff_uid FROM aff WHERE aff_master_uid = #session.aff_uid#)
<CFELSEIF #ListGetAt(form_aff_UID,1)# IS "2">
AND lead_aff_uid = #val(ListGetAt(form_aff_uid,2))#
<CFELSE>
AND lead_aff_uid  IN (SELECT aff_uid FROM aff WHERE aff_sub_uid = #val(ListGetAt(form_aff_uid,2))# AND aff_master_uid = #session.aff_uid#)
</CFIF>
GROUP BY lead_date
) AS LEAD
ON ( IMP.imp_date = LEAD.lead_date )
ORDER BY report_date;
</CFQUERY>
and here are the results
TRAFFIC REPORT: 01/01/2012 - 01/21/2012
All Accounts
Date
Offers
Served
Total
Leads
Revenue
  01/19/2012
249
1
$0.38       
  01/19/2012
11
1
$0.38       
  01/19/2012
30
1
$0.38       
  01/20/2012
1,006
7
$2.66       
  01/20/2012
40
7
$2.66       
  01/20/2012
1,090
7
$2.66       
  01/21/2012
582
6
$2.28       
  01/21/2012
33
6
$2.28       
  01/21/2012
515
6
$2.28       
Total
3,556
42
Sub-Total
$15.96       
Referral Revenue
$0.00       
Total
$15.96  
$15.96 is NOT correct, I need to find out whats going on there, but the other issue is look how it's duplicating the dates, it's one line for each account by the look of it
Can anybody help! This SQL command already got a little beyond me
Thanks
Mark