-- List all available commands
\\?
-- List all database schema
SELECT schema_name
FROM information_schema.schemata;
-- List all databases
\\l
-- Switch database
\\c
-- List all table in database
\\dt
-- List all index
\\di
-- List all users
\\du
-- List all groups
\\dg
-- Get commands historic
\\s
-- Get postgresql settings
SELECT name, setting FROM pg_settings;