Exclude only negative value

[safik003]

I'm fetching data from below table. 

TableA:

ID, Value

1, 58

2, 80

3, 90

4, - 50

5, - 45

6, 

7,

8, 78;

I want to fetch all the data excluding negative values. I have used below condition in Qlik script. 

Load * from TableA where values>0;

But it also excluding null values but I want those null values as well. ID 7,8 contain null values. Please suggest. 

[bharathadde · Accepted solution]

Load *

from TableA 

where if(len(Values)>0,Values>0) or Len(Values)=0;

[Vegar]

What if you turn the logic around  like this

Load * from TableA where NOT values<0;

[safik003]

This condition is also excluding null values.