On Wed, Mar 4, 2020 at 4:21 PM stan <stanb@panix.com> wrote:
Probably a bit off topic, but I suspect someone on this list knows how to do this.
I am in the process of writing a plperl function. In this function I need to compare the data in the NEW versus OLD structures. I am writing this as a generic subroutine, so I am looping through and comparing the 2 to see what is different. Problem is, that I need to know whether to us n != or a ne comparison.
how can I determine what the data type of the value element is?
Not up to speed on Perl but you basically want everything to be done using string equality - can't you just use "ne" everywhere and not worry about comparing numbers using string comparison logic? Might want to disabled warnings...
That would have to be faster than executing a type_of function on every single column.
Then measure performance and decide whether a generic routine is performant enough. If not you might try creating custom function dynamically using the catalogs as input.
