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Join multiple sql in postgresql

Newton asked
Last Modified: 2020-03-03
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 :

Sql : select user;
Output : userA

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

Dbname,, userA

Is it possible to join these sql.
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