Field-condition in table

[vebjornsvare]

Hi, 

How can I solve this problem?

I have a table like this with a task and a number connected.

22-3

22-4

22-5

23-6

24-7

25-3

25-4

How can I sort out just the first of each task so that the table will look like this:

22-3

23-6

24-7

25-3

Is it possible to implement a condition in the field dimension, and not in the script?

This must work for a long list of numbers, not only this example. 

[Gysbert_Wassenaar]

Perhaps like this:

Tasks:
LOAD
    Task,
    SubField(Task,'-',1) as TaskNumber, 
    SubField(Task,'-',2) as Number 
INLINE [
Task
22-3
22-4
22-5
23-6
24-7
25-3
25-4
];

Result:
LOAD
    Task
WHERE
    Index = 1
    ;
LOAD
    Task,
    If(TaskNumber=Previous(TaskNumber), Peek(Index)+1,1) as Index
RESIDENT
    Tasks
ORDER BY
    TaskNumber,
    Number
    ;

DROP TABLE Tasks;

[vebjornsvare]

But it is possible to solve this without coding in the script, only use the user interface?