topic Re: Unable to fetch value using peek function in Qlikview 12 in QlikView

Unable to fetch value using peek function in Qlikview 12

Wed, 25 Nov 2020 16:16:04 GMT

DateRange:

LOAD

MIN(OrderDate) as MinDate,

MAX(OrderDate) as MaxDate

Resident Orders;

LET vMinDate = Peek('MinDate',0,'DateRange')

returning NULL after debugging.I have checked DataRange table has got the values

Re: Unable to fetch value using peek function in Qlikview 12

oscar_ortiz — Sat, 28 May 2016 06:58:01 GMT

The only issue I'm seeing here is that you don't have a semicolon after your Let statement.

What version of 12 are you running?

I just taught that exercise this week and I know it works on the latest version.

Re: Unable to fetch value using peek function in Qlikview 12

sunny_talwar — Sat, 28 May 2016 21:58:53 GMT

Have you tried using TRACE statement to see what vMinDate evaluates to?

DateRange:

LOAD

MIN(OrderDate) as MinDate,

MAX(OrderDate) as MaxDate

Resident Orders;

LET vMinDate = Peek('MinDate',0,'DateRange');

TRACE $(vMinDate);

Re: Unable to fetch value using peek function in Qlikview 12

Mon, 27 Jun 2016 15:44:51 GMT

Same situation here...I am using v12 SR3.

Error: Error in expression:

PEEK is not a valid function

Couldn't find PEEK in the function drop down list.

Re: Unable to fetch value using peek function in Qlikview 12

sunny_talwar — Mon, 27 Jun 2016 16:20:46 GMT

Are you trying to use this on the front end of the application?

Re: Unable to fetch value using peek function in Qlikview 12

Mon, 27 Jun 2016 16:23:55 GMT

No I tried them in the back end. The error message was generated because I was testing the validity of the expression.

Re: Unable to fetch value using peek function in Qlikview 12

sunny_talwar — Mon, 27 Jun 2016 16:25:51 GMT

Would you be able to share the script you have tried thus far?

Re: Unable to fetch value using peek function in Qlikview 12

Mon, 27 Jun 2016 16:29:44 GMT

QuartersMap:

MAPPING LOAD

rowno() as Month,

'Q' & Ceil (rowno()/3) as Quarter

AUTOGENERATE (12);

Temp:

Load

Date#(min([Request Date]),'YYYY-MM-DD') as minDate,

Date#(max([Request Date]),'YYYY-MM-DD') as maxDate

Resident Request;

Let varMinDate = Num(Peek('minDate', 0, 'Temp'));

Let varMaxDate = Num(Peek('maxDate', 0, 'Temp'));

DROP Table Temp;

TempCalendar:

LOAD

$(varMinDate) + Iterno()-1 As Num,

Date($(varMinDate) + IterNo() - 1) as TempDate

AutoGenerate 1 While $(varMinDate) + IterNo() -1 <= $(varMaxDate);

MasterCalendar:

Load

Date(TempDate,'M/D/YYYY') AS [Request Date],

num(Date(TempDate,'M/D/YYYY')) AS [ReqRequestDateNum],

week(TempDate) As Week,

Year(TempDate) As Year,

Month(TempDate) As Month,

Day(TempDate) As Day,

YeartoDate(TempDate)*-1 as CurYTDFlag,

YeartoDate(TempDate,-1)*-1 as LastYTDFlag,

inyear(TempDate, Monthstart($(varMaxDate)),-1) as RC12,

date(monthstart(TempDate), 'MMM-YYYY') as MonthYear,

ApplyMap('QuartersMap', month(TempDate), Null()) as Quarter,

Week(weekstart(TempDate)) & '-' & WeekYear(TempDate) as WeekYear,

WeekDay(TempDate) as WeekDay

Resident TempCalendar

Order By TempDate ASC;

Drop Table TempCalendar;

Re: Unable to fetch value using peek function in Qlikview 12

sunny_talwar — Mon, 27 Jun 2016 16:35:45 GMT

See if this makes any difference:

Temp:

Load min(Date#([Request Date], 'YYYY-MM-DD')) as minDate,

max(Date#([Request Date],'YYYY-MM-DD')) as maxDate

Resident Request;

Notice the change of order of Date#() and Min/Max for the minDate and maxDate

Re: Unable to fetch value using peek function in Qlikview 12

Mon, 27 Jun 2016 16:53:34 GMT

It's working! Thank you!

Re: Unable to fetch value using peek function in Qlikview 12

sunny_talwar — Mon, 27 Jun 2016 16:57:48 GMT

Awesome