命令 Command 作用 Action
\h [NAME] help on syntax of SQL commands, * for all commands
\d[S+] list tables, views, and sequences
\d[S+] NAME describe table, view, sequence, or index
` \l[+] [PATTERN]` list databases
\echo [-n] [STRING] write string to standard output (-n for no newline)
\i FILE execute commands from file
\cd [DIR] change the current working directory
` \c[onnect]` connect to new database
\conninfo display information about current connection
\q quit psql