RETURN multiple columns in FUNCTION

Hi!


How can i create a function who returned more than one data.

For example if i do SELECT data1,data2 FROM table; i get two columns.

Now i want to have some function witn one argument and execute 4
queries and return data like if i manual execute those 4 queries.

data1       data2
something   something
.
.
.



Thanks

Uros