Need help with calc from tables

Question

I have a table that contains query #1 and have another table
that contains a field that needs to use the result of the cfset in
another calc.
The new calc in query #2 needs to divide the Num_Checks_Trans
from query #1 by the by the Weekly_Hours_Recorded in query #2.
Can anyone help me figure this out?
<b>1.</b>
<cfquery name="QryEmployeeDetail"
datasource="NBProdReports">
SELECT TblContractInfo_SubMenuTable.User_ID,
TblContractInfo_SubMenuTable.Contract_Number,
TblContractInfo_SubMenuTable.Transaction_Type,
TblContractInfo_SubMenuTable.Num_Checks_Trans, TblTransType.Value,
TblContractInfo_SubMenuTable.Notes, TblMasterTrans.Date_Opened
from TblContractInfo_SubMenuTable, TblMasterTrans,
TblTransType
WHERE TblContractInfo_SubMenuTable.Task_Number =
TblMasterTrans.Task_Number
and TblTransType.Transaction_Type =
TblContractInfo_SubMenuTable.Transaction_Type
And TblMasterTrans.Date_Opened BETWEEN
#createODBCDate(DED_startDate)# AND #createODBCDate(DED_endDate)#
order BY TblMasterTrans.Date_Opened ASC,
TblContractInfo_SubMenuTable.User_id ASC
</cfquery>
<cfset totalTrans = 0 />
<cfloop query="QryEmployeeDetail">
<cfset totalTrans = totalTrans +
(QryEmployeeDetail.Num_Checks_Trans * QryEmployeeDetail.Value)
/></cfloop>
Text
2.
<cfquery name="QryEmployeeDetail"
datasource="NBProdReports">
SELECT TblContractInfo_SubMenuTable.User_ID,
TblContractInfo_SubMenuTable.Contract_Number,
TblContractInfo_SubMenuTable.Transaction_Type,
TblContractInfo_SubMenuTable.Num_Checks_Trans, TblTransType.Value,
TblContractInfo_SubMenuTable.Notes, TblMasterTrans.Date_Opened
from TblContractInfo_SubMenuTable, TblMasterTrans,
TblTransType
WHERE TblContractInfo_SubMenuTable.Task_Number =
TblMasterTrans.Task_Number
and TblTransType.Transaction_Type =
TblContractInfo_SubMenuTable.Transaction_Type
And TblMasterTrans.Date_Opened BETWEEN
#createODBCDate(DED_startDate)# AND #createODBCDate(DED_endDate)#
order BY TblMasterTrans.Date_Opened ASC,
TblContractInfo_SubMenuTable.User_id ASC
</cfquery>

Answer 1

This can be rewritten as a single query which is good for a
number of reasons, including we only make one trip to the database
and we do our calculations on the SQL backend, which is faster than
doing them in CFML.
What you're going to want to do is SUM() the total
transaction values by having a column like SUM(Num_Checks_Trans *
Value) AS totalTrans. To get the value for your other column you
can calculate that like Num_Checks_Trans / Weekly_Hours_Recorded. I
didn't see the latter in either of your queries so I'm not sure
where it comes from, but you can definitely use it in your SELECT
clause when calculating.
Since SUM() is an aggregate function, you'll have to use a
GROUP BY clause to make it work. You'll have to GROUP BY each
column in the SELECT statement. If some of the columns have
differing data that you won't want to use in the GROUP, you can
always use a nested subquery as part of your FROM clause and then
join that to the original queries with the totals.
I hope that helps.
- William