What is the differences between to and = in set search_path? I have different schemas in my database like,

public
Hotel_Management
Hospital_Management

My default schema is Public. So I try to change from default schema to another schema.
I know how to change the schema from one to another.
set search_path to Hotel_Management;

But my doubt is, What is the real difference between to and = in set search_path?.
For example:
Set search_path to Hotel_Management;

and
Set search_path = Hotel_Management;

Thanks in Advance...
There is no difference. 

If you look at the manual one is the alternative to the other. { TO | = } means either TO or = 

The meaning of that is explained at the start of the manual


  and vertical lines | indicate that you must choose one alternative