qlikview query taking long time to execute - qlikview

Question

I am Loading data in qlikview through a flat file, the data is loaded in the table called imported. from the table imported a table called Transaction_details loads data.
the query I am using is
Transaction_details:
Load
KEY,
Line_number,
KEY&Line_number AS Line_key,
currency,
ExchRate,
Account,
[Account Text],
[Cost Ctr],
[WBS Element],
[Line Text],
[TC Amount],
[LC Amount],
[D/C],
[Tax Code],
[Account Type],
CoCode
Resident imported ;
after that I want to do some calculations in another table and Join it back to the main table transaction_details
the table I have created for calculations is called sums:
SUMS:
load
distinct KEY
resident Transaction_details;
LEFT JOIN (SUMS)
Load
KEY,
SUM([LC Amount]) as [LC AMOUNT SUM]
RESIDENT Transaction_details
GROUP BY KEY;
the original table transactions_details have around 400 million rows, for some reason this simple group and sum in sums table is taking long time, I am running from past 4 hours now. is there a better way of doing this , and can some one guide me to the qlikview query performance.

Answer 1

You don't need the first SUMS Load statement, just try:
SUMS:
Load
KEY,
SUM([LC Amount]) as [LC AMOUNT SUM]
RESIDENT Transaction_details
GROUP BY KEY;
You could then join other calculations to this table.
However, I wonder why you want this because QlikView will aggregation on the fly in charts.