I am moving some of my old MS Access functions to plpgsql.
My function was made to return coordinates, X,Y,Z for a point along a curved line. So it is not the fastest of functions because it has to call and query data from 3 different tables. I used to just create 3 wrapper functions for my main function which would return the x, y, and z values seperately but that requires the main function to be called 3 seperate times. So here is my bottle neck. Of course I need to update +50,000 records.
What should I do to speed this up. What is the best way to update 3 columns from one function call.
It's realy very hard say something without the involving tables schema. You can: - change the function to return x,y,z in one call only ? - join the tables? - what is the function language?
In MSACCESS I once rig the function to cycle through the records with a curser but that was slow and would crap out due to the shear number.