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johanfo2
Creator
Creator

List boxes with 30M unique entries makes Qlikview crawl

So far I have quite good experience with Qlikview.  However,  I feel now I have ran into a serious issue with large list boxes.

Take this simple script:

Load

RecNo() as A, round(rand()*100000000) as B

autogenerate(30000000);

It generated 30 million rows.  First column is a pure counter, and the second are random figures between 0 and 100 Million.

Now, If I create two listboxes of the two, and start to search for a number in column B,  the system grinds to a holdt as soon as I start typing. It seems as the system tries to search for each keystroke, and freezes between the.  Very annoyong indeed, though it eventually recovers perhaps 10 seconds.

Why do I need this?  Well, in my real application I have 30M rows.  One of the columns of the row is a unique transaction number of approximately 10 digits, and I want to search this occationally.

My questions are as follows:

* Am I pushing the boundries of Qlikview? Is this normal beaviour? 

* How should I otherwise solve this problem?

I'm running this on a i7-2600k with plenty of ram

3 Replies
magavi_framsteg
Partner - Creator III
Partner - Creator III

Hi Johanfo2.

Which version of QV are you using?

I have never seen this when I have plenty of RAM and CPU available.

I've only seen this on very slow machines.

johanfo2
Creator
Creator
Author

Both Qlikview 11 Beta, Personal Edition (64 bit) and Qv 10 SR3 (64 bit).

I just tried it on QlikView 10 SR3:

* Ran the script above

* Added two listboxes (A,B)

* Clicked on the frame of B and wrote '33456' (or whatever number)

Result:  Total freeze, which recovers after 15 second.  This is on a 4-core i7-2600K with 8 GB ram.

I believe everybody will get this problem, regardless hardware.

JF

johanfo2
Creator
Creator
Author

I'll add my own findings.  It seems as, since column "B" is a number, and my search (F3) enters a string-of-numbers, the system tries to convert all the numbers to strings before comparing.  If I on load wite:

Load

RecNo() as A, Text(round(rand()*100000000)) as B

autogenerate(30000000);

So that column B is text, not numbers, then the system doesn't hang on search!  Not a very easy "bug" to see.