Someone explain to me Make_Set() please!

[ratass2002]

I am very confused at the usefulness of Make_Set()

select make_set(1,"a","b","c");

a
select make_set(2,"a","b","c");
b
select make_set(3,"a","b","c");
a,b
select make_set(4,"a","b","c");
c
select make_set(5,"a","b","c");
a,c
select make_set(6,"a","b","c");
b,c
select make_set(7,"a","b","c");
a,b,c

So in god's name enlighten me, why would I need such a function? There must be a mathematical explanation😃

[ultraslacker]

Perhaps in using a bit value to specify access levels similar to unix -

SELECT make_set(4, "Owner", "Group", "Other") AS write_access.

[ratass2002]

You are absolutely correct. Now it makes more sense now.