Join multiple sql in postgresql

I have below 3 sql but I need 1 sql that can show all 3 result as 1 output

Sql : select current_database();
Output : dbname

Sql : select inet_server_addr();
Output : 101.99.234.20

Sql : select user;
Output : userA

Above is 3 different output but I need 1 sql that can give 1 output like below.

Output
Current_database,ip,user
Dbname, 101.99.234.20, userA

Is it possible to join these sql.