psql复制到csv

Question

in postgresql when running like this I get successful result...

\copy (select * from user) To 'test.csv' DELIMITER ',' CSV Header;

but when I run like this it fails...

\copy
(select * from user)
To 'test.csv' DELIMITER ',' CSV Header;

LINE 2: To 'test.csv' DELIMITER ',' CSV Header;

can someone suggest how to execute with second pattern...

Answer 1

psql (the PostgreSQL command line client) commands are preceded with a backslash and terminated by return, not a semicolon. A semicolon terminates SQL commands, but \\COPY is not SQL command. COPY without a leading backslash would be a SQL command. psql commands are written on a single line.

psql commands are run in your client machine, while SQL commands are run in the server. If you connected to a remote server, \\COPY would use a csv file on your client filesystem and COPY a file on server filesystem.