Increment Month in While loop

Mon, 05 Dec 2016 17:00:24 GMT

LET vDate = null;

LET vStartDate = MonthStart(AddMonths(Date(Today()),-21));

LET vEndDate = Monthend(AddMonths(Date(Today()),-1));

LET vDDStartDate = Num(Date#(MonthEnd(addmonths(today()-1,-2)),'MM/DD/YYYY'))-3;

LET vTest =Date(monthend($(vEndDate)));

Do while vStartDate <= vEndDate // Need the data from past 21 month to last month.

FOR vDate = date(AddMonths('$(vStartDate)',-2),'YYYY-MM-DD') to date(MonthEnd('$(vStartDate)'),'YYYY-MM-DD'); // FOR each month i need to look back at 2 months of data to get repeat customer in the last 3 months

LET vDate = Date($(vDate), 'YYYY_MM_DD');

Customer:

LOAD ID

FROM [lib://QVD/QVD/E_Cust$(vDate).qvd](qvd); // FILES ARE SAVED DAILY FOR PREVIOUS DAY _ NEED TO LOOP THROUGH 3 month of data to get all cust and ID

Next vDate;

CUSTFINAL:

LOAD DISTINCT

ID,

date(MonthEnd('$(vStartDate)'),'YYYY-MM-DD') as [Month Date] // save the date of the month ran

RESIDENT Customer;

CONCATENATE (CUSTFINAL)

LOAD *

FROM [lib://QVD/A.qvd](qvd);

STORE (CUSTFINAL) into [lib://QVD/A.qvd] ;

DROP TABLES Customer ;

LET vStartDate = date(AddMonths('$(vStartDate)',1),'YYYY-MM-DD'); // This is the issue - not when the loop run i want the next month data to be extracted- when but once increment it - the top vStart Vaiable replaced this date

LOOP

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Increment Month in While loop