SQL group by within sum() - sql

Question

I have the following sql statement which produces the following output (filtered result for 7/8 DueDate)
SELECT
JobType.BillingCategory,
Jobs.DueDate,
Sum(Impressions.PRINTtot) AS SumOfPRINTtot,
Sum(Impressions.PRINTrem) AS SumOfPRINTrem,
Sum(Impressions.CARDtot) AS SumOfCARDtot,
Sum(Impressions.CARDrem) AS SumOfCARDrem,
Sum(Impressions.BOOKtot) AS SumOfBOOKtot,
Sum(Impressions.BOOKrem) AS SumOfBOOKrem
FROM
(
Impressions
INNER JOIN Jobs ON Impressions.JobNo = Jobs.JobNo
)
INNER JOIN JobType ON (Jobs.AccountName = JobType.AccountName)
AND (Jobs.Product = JobType.Product)
GROUP BY
Jobs.DueDate,
JobType.BillingCategory;
I am trying to get all of these results on one line: the identifier would be the DueDate and the sums of the values in the Impressions table would be summed for each BillingCategory. Example below (omitting CARD & BOOK sums just for visual purposes w/ too many columns)

Answer 1

You could use a CASE expression to summarize your data as such. You could modify your query to sum for only that billing category, I have used CARD in the example below to summarize the metrics for Impressions.PRINTtot and SumOfPRINTrem
SELECT
Jobs.DueDate,
Sum(CASE WHEN JobType.BillingCategory='CARD' THEN Impressions.PRINTtot ELSE 0 END) AS SumOfPRINTtotCard,
Sum(CASE WHEN JobType.BillingCategory='CARD' THEN Impressions.PRINTrem ELSE 0 END) AS SumOfPRINTremCard,
....<repeat>
FROM
(
Impressions
INNER JOIN Jobs ON Impressions.JobNo = Jobs.JobNo
)
INNER JOIN JobType ON (Jobs.AccountName = JobType.AccountName)
AND (Jobs.Product = JobType.Product)
GROUP BY
Jobs.DueDate
Edit 1:
Based on the Billing Categories listed in your question
A complete example may look like:
SELECT
Jobs.DueDate,
SUM(CASE WHEN JobType.BillingCategory='CARD' THEN Impressions.PRINTtot ELSE 0 END) AS SumOfPRINTtotCARD,
SUM(CASE WHEN JobType.BillingCategory='CARD' THEN Impressions.PRINTrem ELSE 0 END) AS SumOfPRINTremCARD,
SUM(CASE WHEN JobType.BillingCategory='CARD' THEN Impressions.CARDtot ELSE 0 END) AS SumOfCARDtotCARD,
SUM(CASE WHEN JobType.BillingCategory='CARD' THEN Impressions.CARDrem ELSE 0 END) AS SumOfCARDremCARD,
SUM(CASE WHEN JobType.BillingCategory='CARD' THEN Impressions.BOOKtot ELSE 0 END) AS SumOfBOOKtotCARD,
SUM(CASE WHEN JobType.BillingCategory='CARD' THEN Impressions.BOOKrem ELSE 0 END) AS SumOfBOOKremCARD,
SUM(CASE WHEN JobType.BillingCategory='CARDTIPON' THEN Impressions.PRINTtot ELSE 0 END) AS SumOfPRINTtotCARDTIPON,
SUM(CASE WHEN JobType.BillingCategory='CARDTIPON' THEN Impressions.PRINTrem ELSE 0 END) AS SumOfPRINTremCARDTIPON,
SUM(CASE WHEN JobType.BillingCategory='CARDTIPON' THEN Impressions.CARDtot ELSE 0 END) AS SumOfCARDtotCARDTIPON,
SUM(CASE WHEN JobType.BillingCategory='CARDTIPON' THEN Impressions.CARDrem ELSE 0 END) AS SumOfCARDremCARDTIPON,
SUM(CASE WHEN JobType.BillingCategory='CARDTIPON' THEN Impressions.BOOKtot ELSE 0 END) AS SumOfBOOKtotCARDTIPON,
SUM(CASE WHEN JobType.BillingCategory='CARDTIPON' THEN Impressions.BOOKrem ELSE 0 END) AS SumOfBOOKremCARDTIPON,
SUM(CASE WHEN JobType.BillingCategory='EOB' THEN Impressions.PRINTtot ELSE 0 END) AS SumOfPRINTtotEOB,
SUM(CASE WHEN JobType.BillingCategory='EOB' THEN Impressions.PRINTrem ELSE 0 END) AS SumOfPRINTremEOB,
SUM(CASE WHEN JobType.BillingCategory='EOB' THEN Impressions.CARDtot ELSE 0 END) AS SumOfCARDtotEOB,
SUM(CASE WHEN JobType.BillingCategory='EOB' THEN Impressions.CARDrem ELSE 0 END) AS SumOfCARDremEOB,
SUM(CASE WHEN JobType.BillingCategory='EOB' THEN Impressions.BOOKtot ELSE 0 END) AS SumOfBOOKtotEOB,
SUM(CASE WHEN JobType.BillingCategory='EOB' THEN Impressions.BOOKrem ELSE 0 END) AS SumOfBOOKremEOB,
SUM(CASE WHEN JobType.BillingCategory='MEMBERGUIDE' THEN Impressions.PRINTtot ELSE 0 END) AS SumOfPRINTtotMEMBERGUIDE,
SUM(CASE WHEN JobType.BillingCategory='MEMBERGUIDE' THEN Impressions.PRINTrem ELSE 0 END) AS SumOfPRINTremMEMBERGUIDE,
SUM(CASE WHEN JobType.BillingCategory='MEMBERGUIDE' THEN Impressions.CARDtot ELSE 0 END) AS SumOfCARDtotMEMBERGUIDE,
SUM(CASE WHEN JobType.BillingCategory='MEMBERGUIDE' THEN Impressions.CARDrem ELSE 0 END) AS SumOfCARDremMEMBERGUIDE,
SUM(CASE WHEN JobType.BillingCategory='MEMBERGUIDE' THEN Impressions.BOOKtot ELSE 0 END) AS SumOfBOOKtotMEMBERGUIDE,
SUM(CASE WHEN JobType.BillingCategory='MEMBERGUIDE' THEN Impressions.BOOKrem ELSE 0 END) AS SumOfBOOKremMEMBERGUIDE,
SUM(CASE WHEN JobType.BillingCategory='MEMBERGUIDEHD' THEN Impressions.PRINTtot ELSE 0 END) AS SumOfPRINTtotMEMBERGUIDEHD,
SUM(CASE WHEN JobType.BillingCategory='MEMBERGUIDEHD' THEN Impressions.PRINTrem ELSE 0 END) AS SumOfPRINTremMEMBERGUIDEHD,
SUM(CASE WHEN JobType.BillingCategory='MEMBERGUIDEHD' THEN Impressions.CARDtot ELSE 0 END) AS SumOfCARDtotMEMBERGUIDEHD,
SUM(CASE WHEN JobType.BillingCategory='MEMBERGUIDEHD' THEN Impressions.CARDrem ELSE 0 END) AS SumOfCARDremMEMBERGUIDEHD,
SUM(CASE WHEN JobType.BillingCategory='MEMBERGUIDEHD' THEN Impressions.BOOKtot ELSE 0 END) AS SumOfBOOKtotMEMBERGUIDEHD,
SUM(CASE WHEN JobType.BillingCategory='MEMBERGUIDEHD' THEN Impressions.BOOKrem ELSE 0 END) AS SumOfBOOKremMEMBERGUIDEHD
FROM
(
Impressions
INNER JOIN Jobs ON Impressions.JobNo = Jobs.JobNo
)
INNER JOIN JobType ON (Jobs.AccountName = JobType.AccountName)
AND (Jobs.Product = JobType.Product)
GROUP BY
Jobs.DueDate
With a specific database/tool there may be various functions that may prove useful. However, I find in these cases especially since your billing categories may change over time, a script where you can run anywhere is sometimes helpful. I've included the script I used to generate the code below
var types='CARD,CARDTIPON,EOB,MEMBERGUIDE,MEMBERGUIDEHD'.split(',');
var metrics = metrics='PRINTtot,PRINTrem,CARDtot,CARDrem,BOOKtot,BOOKrem'.split(',');
var metricTemplate="SUM(CASE WHEN JobType.BillingCategory='[TYPE]' THEN Impressions.[METRICNAME] ELSE 0 END) AS SumOf[METRICNAME][TYPE]";
var summary_lines = []
for(var i=0;i < types.length;i++){
for(var j=0;j<metrics.length;j++){
summary_lines.push(metricTemplate.replaceAll('[TYPE]',types[i]).replaceAll('[METRICNAME]',metrics[j]))
}
}
complete_metrics = summary_lines.join(",\n");
console.log(complete_metrics)

Answer 2

The simplest option is to use your query as a CTE (Common Table Expression) and then you can use it as a base for another query.
For example:
with
q as (
-- your query here
)
select
max(DueDate) as DueDate,
sum(case when BillingCategory = 'CARD' then SumOfPRINTtot else 0 end) as SumOfPRINTtotC,
sum(case when BillingCategory = 'CARD' then SumOfPRINTrem else 0 end) as SumOfPRINTremC,
sum(case when BillingCategory = 'CARDTIPON' then SumOfPRINTtot else 0 end) as SumOfPRINTtotCT,
sum(case when BillingCategory = 'CARDTIPON' then SumOfPRINTrem else 0 end) as SumOfPRINTremCT,
sum(case when BillingCategory = 'EOB' then SumOfPRINTtot else 0 end) as SumOfPRINTtotE,
sum(case when BillingCategory = 'EOB' then SumOfPRINTrem else 0 end) as SumOfPRINTremE,
sum(case when BillingCategory = 'MEMBERGUIDE' then SumOfPRINTtot else 0 end) as SumOfPRINTtotMG,
sum(case when BillingCategory = 'MEMBERGUIDE' then SumOfPRINTrem else 0 end) as SumOfPRINTremMG,
sum(case when BillingCategory = 'MEMBERGUIDEHD' then SumOfPRINTtot else 0 end) as SumOfPRINTtotMGH,
sum(case when BillingCategory = 'MEMBERGUIDEHD' then SumOfPRINTrem else 0 end) as SumOfPRINTremMGH
from q
In some databases you can use the FILTER clause as well. You don't mention which specific database, so this solution will work on virtually all databases.