SQL Server : select on Multiple table with join not completing [closed] - sql

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I have this query which should give this kind of output -
NAME DATE_JOINED TOTAL_GROUPS_FORMED LOANS_ADVANCES TOTAL_ISSUED_AMOUNT TOTAL_LOAN_AMT_REPAID TOTAL_ACCOUNT TOTAL_CLIENTS_RECRUITED TOTAL_AMT_DEPOSITS TOTAL_AMT_WITHDRAWALS NUMBER_DROPOUTS REPORT_DATE
This is my query.
SELECT
D.NAME,
0.0 AS DATE_JOINED,
0 AS TOTAL_GROUPS_FORMED,
COUNT(LOAN_NUMBER) AS LOANS_ADVANCES,
SUM(ISSUED_AMOUNT) AS TOTAL_ISSUED_AMOUNT,
0.0 AS TOTAL_LOAN_AMT_REPAID,
COUNT(A.ACCOUNT_NUMBER) AS TOTAL_ACCOUNT,
COUNT(C.CUSTOMER_CODE) AS TOTAL_CLIENTS_RECRUITED,
0.0 AS TOTAL_AMT_DEPOSITS,
0.0 AS TOTAL_AMT_WITHDRAWALS,
COUNT(CH.ACCOUNT_NUMBER) AS NUMBER_DROPOUTS,
D.REPORT_DATE FROM SALES_OFFICER D
LEFT JOIN LOANS L ON D.SALES_OFFICER_CODE=L.OFFICER_CODE
LEFT JOIN OPEN_ACCOUNT A ON D.SALES_OFFICER_CODE=A.OFFICER_CODE
LEFT JOIN CUSTOMERS C ON D.SALES_OFFICER_CODE=C.OFFICER_CODE
LEFT JOIN CLOSED_ACCOUNT CH ON D.SALES_OFFICER_CODE=CH.OFFICER_CODE
GROUP BY D.NAME,D.REPORT_DATE
This query is not completing probably because all the tables have a lot of data.
Is there another way to have the same output where one Sales Officer's information can be viewed from multiple tables and aggregated together as a single record, grouped by the reporting date.

Answer 1

You are getting a cartesian product for each sales officer -- the number of loans TIMES the number of open accounts TIME the number of customers TIMES the number of closed accounts.
You need to summarize each dimension prior to doing the join. Here is a start:
from sales_offices so left join
(select l.OFFICER_CODE, COUNT(*) AS LOANS_ADVANCES,
SUM(ISSUED_AMOUNT) AS TOTAL_ISSUED_AMOUNT
from loans l
group by l.OFFICER_CODE
)
on so.SALES_OFFICER_CODE = l.OFFICER_CODE
This is just a guess, because you don't use table aliases on all the columns.