[mg4]

Hey, thanks for the reply.

So I think the above is quite close however it only allows you run sum, not appending to iteration id as required.

Following similar to above:
q)summer1:{[x;y] .m.x:x; x:x+y}

q)750 summer1[;2]/2;
q).m.x
1500

 

I’m probably missing something obvious but is there a way to manipulate this to append to ID per iteration so that:
q)summer:{[ID;y;z] y:y+z;.m.id:.m.id,ID;.m.y:y; ID:ID+1}

q).m.y

1500 (as above)

q).m.ID

750 (missing piece)

 

Thanks again!

[mg4]

The very one.

Fair play and thanks!