topic How to interrupt reload and throw error if field is empty? in QlikView

How to interrupt reload and throw error if field is empty?

Fri, 23 Apr 2010 08:49:32 GMT

Hello.

I load data from excel files and I want to interrupt reload and throw error if some of column cell is empty.

Some ideas?

How to interrupt reload and throw error if field is empty?

Fri, 23 Apr 2010 09:07:04 GMT

this dont throw error:

load
if(len(column1)=0, 1/0, column1) as Column1
from ......

How to interrupt reload and throw error if field is empty?

Fri, 23 Apr 2010 09:19:17 GMT

Hi,

In order to interrupt script execution you can use "exit script".
With the trace statement you can write error messages into log file and script execution progress window.

Alex

Re: How to interrupt reload and throw error if field is empty?

Thu, 05 Jul 2012 13:33:36 GMT

I haven't found a command to throw exceptions but instead i use a dummy call to a sub that does not exist:

if someError then
call ThrowException('Error: some kind of error'); // the sub doesn't exist ==> qv error
end if

This will propagate an error back to the publisher and report the task as failed. If sometime in the future qliktech will implement a (or I learn how of) way to throw exceptions, for instance by letting us set "ScriptError", then it is easy to create the sub ThrowException to use that feature.

Re: How to interrupt reload and throw error if field is empty?

Anonymous — Wed, 09 Oct 2013 09:30:59 GMT

load

if(len(column1)=0, 'error', '') as event // this won't pickup null values.

let idxevent=FieldIndex('event','error');

if idxevent>0 then

error:

load

from 'field is zero'(qvd); // should be a non existing file.

endif