topic Re: Auto load source file and generate qvd with same name in QlikView

Auto load source file and generate qvd with same name

sachinryeola — Thu, 08 Jan 2015 11:34:42 GMT

Hi Guys,

Query :

I have two folders (Source) and (Source QVD)

Now, I am trying load new source files from (source) folder where only new source files will be fetched whose QVD is not generated in (Source QVD) folder.

example :

i have a.txt , b.txt files in (Source) folder and a.qvd in (source QVD) folder

now after i reload i want only qvd generated of b.txt source file

condition:

Source file name and generated QVD of that file must have same name

My Script: I am trying with following script but failing somewhere

FOR Each File in filelist ('C:\Users\Sachin\Desktop\Test\Autoload\source\*.txt')

FileDirectory:

LOAD

subfield(SubField('$(File)','\',8),'.',1) as Name

autogenerate 1;

NEXT File

FOR Each File in filelist ('C:\Users\Sachin\Desktop\Test\Autoload\SourceQVD\*.qvd')

Left Join

LOAD

subfield(SubField('$(File)','\',8),'.',1) as Name,

1 as flag

autogenerate 1;

NEXT File

NewSource:

load RowNo(),

Name,

flag

Resident FileDirectory

where flag <> 1;

DROP Table FileDirectory;

let vSourceFileCount = NoOfRows('NewSource');

for i=0 to $(vSourceFileCount)

let vQvdFileName = Peek('Name',$(i),'NewSource');

// qvd logic

NEXT i;

//QVD GENERATE LOGIC

for j=0 to $(vSourceFileCount)

let vSourcefilename = Peek('Name',$(j),'NewSource');

'$(vSourcefilename)':

load *

from C:\Users\Sachin\Desktop\Test\Autoload\qvwfilename autoload source data\*.txt;

store $(vSourcefilename) into C:\Users\Sachin\Desktop\Test\Autoload\qvwfilename auto load source data\$(vSourcefilename).qvd;

next j

Thanks and Regards,

Sachin

Re: Auto load source file and generate qvd with same name

Peter_Cammaert — Thu, 08 Jan 2015 12:43:42 GMT

IMHO the following simpler version does what you ask. Unless I missed some obvious requirements.

LET vSourcePath = 'C:\Users\Sachin\Desktop\Test\Autoload\';

FOR Each File in filelist('$(vSourcePath)\Source\*.txt')

LET vBaseName = mid(subfield('$(File)', '\', -1), 1, index(subfield('$(File)', '\', -1), '.', -1)-1);

IF IsNull(filetime('$(vSourcePath)\SourceQVD\$(vBaseName).qvd')) THEN

TrfTable:

LOAD * FROM [$(vSourcePath)\Source\$(vBaseName).txt] (txt, codepage is 1252, embedded labels, delimiter is ',', msq);

STORE TrfTable INTO [$(vSourcePath)\SourceQVD\$(vBaseName).qvd] (qvd);

DROP Table TrfTable;

END IF

LET vBaseName=;

LET File=;

You must adjust the file options in the LOAD statement to correspond to the contents of your text files. These match my test data, and may not suit your situation.

Best,

Peter

Re: Auto load source file and generate qvd with same name

sachinryeola — Thu, 08 Jan 2015 15:27:41 GMT

Thanks Peter,

you Rocked

Re: Auto load source file and generate qvd with same name

Peter_Cammaert — Thu, 08 Jan 2015 16:28:51 GMT

Thanks, Sachin.

BTW you have an original way to close the discussion.