Problem with Peek() function - it returns inproper values

[mszerema01]

Hello everyone,

I have problem with Peek function. I try to create rank (OT_TOIL_RANK) for particular ID ordered by Day column .

LOAD
*,
if(Previous(Key_TOIL_baza) = Key_TOIL_baza, Peek(OT_TOIL_RANK) + 1, 1) as OT_TOIL_RANK
Resident table
order by Key_TOIL_baza, Day ASC;

For two Staff IDs function do not work - it do not assingn any number of rank, it just pass over those IDs:

Do you have idea why it's happening?

[marcus_malinow · Accepted solution]

You're missing some single quotes in your Peek, also set row number to retrieve previous row (-1)

I'd also be inclined to change the Previous to a Peek, but that's purely personal preference

if(Peek('Key_TOIL_baza', -1) = Key_TOIL_baza, Peek('OT_TOIL_RANK', -1) + 1, 1) as OT_TOIL_RANK

[mszerema01]

Marcus thanks a lot !!