Re: aggregate function for median calculation

Thalis A. Kalfigopoulos writes:

> So is there a way I can actually have a variable (the array with the elements) maintained between calls of the same function? I'm trying to figure how to design the aggregate's state_function that will do the element accumulation (before actually passing this array to the final to calculate the median).

Sure, you create a (static) global variable and reallocate memory for it
in each call and free it by the finalizer function.

-- 
Peter Eisentraut   peter_e@gmx.net   http://funkturm.homeip.net/~peter