Matthew Peter <survivedsushi(at)yahoo(dot)com> writes:
> What I'm trying to do is create a function that accepts a list then sorts and groups the values (like in sql)... I will have an unique list I can convert it to an array later or leave it a list
There is no "list" data structure in SQL. There are tables, and there
are arrays, but it's not especially easy to pass an arbitrary table
value to a function. So you almost certainly need to define your
problem as "create a function that accepts an array then ...".
regards, tom lane