topic Re: How to create a script variable from table values to use it with the "from" command? in QlikView

How to create a script variable from table values to use it with the "from" command?

robert_dolezych — Wed, 24 May 2017 09:39:46 GMT

Hi Community

I have some file names in my table. I would like to use them as variables within the "from" command?
Is there any possibility to create such variables?

Thank you for your help

Robert

Re: How to create a script variable from table values to use it with the "from" command?

Peter_Cammaert — Wed, 24 May 2017 15:21:58 GMT

Yes, for example like this. Imagine that we have a table called Filenames with a single field called FName. Every row contains a different QVD file name.

FOR i = 0 TO NoOfRows('Filenames')-1

LET vFName = peek('FName', i);

Table:

LOAD * FROM [$(vFName)] (qvd);

There are many more complex examples available in the community,

Re: How to create a script variable from table values to use it with the "from" command?

micheledenardi — Wed, 24 May 2017 15:28:52 GMT

You have first to read the table as is than use peek function inside a for statement to reach the goal.

Something like:

OriginalTab:

Load

Field1,

Field2,

...

From db.table1;

For n=0 to NoOfRow(OriginalTab)

Let vSource = peek('Field1',n,'OriginalTab');

if n=0 then

NewTable:

NoConcatenate

Load

From $(vSource);

Else

Concatenate(NewTable)

Load

From $(vSource);

End if

drop table OriginalTab;

Re: How to create a script variable from table values to use it with the "from" command?

robert_dolezych — Wed, 07 Jun 2017 07:11:51 GMT

Thank you Michele

Regards

Robert

Re: How to create a script variable from table values to use it with the "from" command?

robert_dolezych — Wed, 07 Jun 2017 07:17:23 GMT

Thank you Peter

it was realy helpful

regards

Robert

Re: How to create a script variable from table values to use it with the "from" command?

prma7799 — Wed, 07 Jun 2017 07:19:32 GMT

Hi Robert ,

If you get right answer then please close this thread to mark right answer.

Thanks

Re: How to create a script variable from table values to use it with the "from" command?

micheledenardi — Wed, 07 Jun 2017 07:20:22 GMT

Please,

when applicable please mark the appropriate replies as CORRECT. This will help community members and Qlik Employees know which discussions have already been addressed and have a possible known solution. Please mark threads as HELPFUL if the provided solution is helpful to the problem, but does not necessarily solve the indicated problem. You can mark multiple threads as HELPFUL if you feel additional info is useful to others.

Regards