topic SV:Previous() function in script in QlikView

Previous() function in script

Thu, 28 Apr 2011 10:35:51 GMT

t1:
Load Week,
Material,
[Weekly Material Stock] as Stock1,
[Weekly Material Demand] as Demand1
Resident Temp_Table
where WOCHE = $(vFieldValue_1)
;

Let Stock = Previous('Stock1');

Trace $(Stock);

I wanted to see what values Stock takes in my loop

I see only stock1 in the trace but not the values it is taking. Anyidea how to change my trace so that I can see the values it is taking??

Regards

Sravan

SV:Previous() function in script

Fri, 29 Apr 2011 14:06:02 GMT

previous() references the field and values in the input table, which means that it can't be used outside of a load statement.

I would suggest that you use peek() instead.
To get the last record read:

LET Stock = peek('Stock1', -1, 't1');

SV:Previous() function in script

Fri, 29 Apr 2011 14:19:36 GMT

Hi Steffan,

with Peek also it does not work

see here in this thread

http://community.qlik.com/forums/t/44670.aspx

Thanks

Sravan

SV:Previous() function in script

Fri, 29 Apr 2011 14:31:09 GMT

It was quite a lengthy thread 🙂

However, I couldn't see that you had tested the exact same syntax that I suggested.
I saw the following row, but you are not defining the table as a string (with single quotation marks):
Let Stock = Peek('Stock1',-1,t1);

Try my suggestion in the example above and let me know if this works.

Kind regards

SV:Previous() function in script

Fri, 29 Apr 2011 14:50:31 GMT

HI Steffan,

Thanks and sorry for confusing. I edited the Script in the other thread and yes as in the example which I have attached in the other thread, I used the same syntax which you wrote here. The problem is that peek and concatenate somehow seems not to work. I described extensively my problem in other thread.

Thanks anyway for your help.

Regards

Sravan

SV:Previous() function in script

Miguel_Angel_Baeyens — Fri, 29 Apr 2011 14:54:34 GMT

Hello Sravan,

I may have got you wrong, but if you want a list of possible values for field "Stock", once the whole table has been loaded, you can do as follows:

AllStockValues:LOAD CONCAT(DISTINCT Stock, ',') AS ValuesForStockRESIDENT t1;

If you mean you are within a loop and you want to know the last loaded value of "Stock", just do

LET vLastStockValue = Peek('Stock'); // No need for additional parameters

Hope that helps

SV:Previous() function in script

Fri, 29 Apr 2011 15:44:50 GMT

Hi Miguel,

I dont get you. I am attaching the Example and I explained my problem in the application. can you please help?

[View:http://community.qlik.com/cfs-file.ashx/__key/CommunityServer.Components.UserFiles/00.00.00.49.52/StockReporting.qvw]

Thanks

sravan

SV:Previous() function in script

Mon, 02 May 2011 10:13:21 GMT

Any Ideas profis Here:)

SV:Previous() function in script

Mon, 02 May 2011 10:19:14 GMT

Hi,

As the week changed I tried to change the present .qvw and upload. somehow it does not change Here is the new one.

[View:http://community.qlik.com/cfs-file.ashx/__key/CommunityServer.Components.UserFiles/00.00.00.49.52/StockReportingLatest.qvw]

Regards

Sravan