Duplicated data in incremental table

[#1]

Hi i have writed a qlikview script for an incremental table, but i have a problem with duplicated data.

The counter is right for data with date equal to date of execution of scipt, but this counter is double in the future execution.

SCRIPT:

SET ThousandSep='.';

SET DecimalSep=',';

SET MoneyThousandSep='.';

SET MoneyDecimalSep=',';

SET MoneyFormat='€ #.##0,00;-€ #.##0,00';

SET TimeFormat='hh:mm:ss';

SET DateFormat='DD/MM/YYYY';

SET TimestampFormat='DD/MM/YYYY hh:mm:ss[.fff]';

SET MonthNames='gen;feb;mar;apr;mag;giu;lug;ago;set;ott;nov;dic';

SET DayNames='lun;mar;mer;gio;ven;sab;dom';

load max(date(START_DATE,'DD/MM/YYYY')) as  LAST_DATE_GROUP

from

(QVD);

LET VCurrentMinStartDate = peek('LAST_DATE_GROUP') ;

load max(date(START_DATE,'DD/MM/YYYY')) as  LAST_DATE_SUB

from

(QVD);

LET VCurrentMaxStartDate = peek('LAST_DATE_SUB') ;

if len('$(VCurrentMinStartDate)')=0 then

DATA_START:

LOAD OPERATOR_ID, MERCHANT_ID, PRODUCT_ID, date(START_DATE,'DD/MM/YYYY') as START_DATE, count(SUBSCRIPTION_ID) as NUM

FROM

(QVD)

WHERE date(START_DATE,'DD/MM/YYYY') < '$(VCurrentMaxStartDate)'

GROUP BY OPERATOR_ID, MERCHANT_ID, PRODUCT_ID, date(START_DATE,'DD/MM/YYYY')

;

STORE DATA_START into (QVD);

ELSEIF '$(VCurrentMinStartDate)' <> date('$(VCurrentMaxStartDate)'-1, 'DD/MM/YYYY') then

DATA_START:

LOAD * from (QVD);

DATA_START_NEW:

CONCATENATE(DATA_START)

LOAD OPERATOR_ID, MERCHANT_ID, PRODUCT_ID, date(START_DATE,'DD/MM/YYYY')  as START_DATE, count(SUBSCRIPTION_ID) as NUM

FROM

(QVD)

WHERE (date(START_DATE,'DD/MM/YYYY') < '$(VCurrentMaxStartDate)' and date(START_DATE,'DD/MM/YYYY')> '$(VCurrentMinStartDate)')

GROUP BY OPERATOR_ID, MERCHANT_ID, PRODUCT_ID, date(START_DATE,'DD/MM/YYYY')

;

STORE DATA_START into (QVD);

end if;

[ziadm]

Incremental loading - All scenarios

[#3]

any solution?