Create table with substrackt values

r_vdbraak — Wed, 25 Jun 2014 14:55:38 GMT

Hello all,

I'm having a table with date (Datum) and a value (Stand).

What I need is to add a column named Verbruik, containing the difference between Stand and Stand of the Previous Datum.

I hope sombody can help me.

Re: Create table with substrackt values

alexandros17 — Wed, 25 Jun 2014 14:58:47 GMT

order by datum then use this expression

sum(Stand)-Above(Stand)