问题
So I regularly backup and restore databases and schema's using pgadmin4. I would like to do it with a batch file using commands as pg_dump and pg_restore. I however always fail to succeed in this and could use some help. The way I try to dump one schema (with data) is the following:
pg_dump -U postgres -F c -d database -n schema > mw2
Then I try to restore it with pg_restore:
pg_restore -U postgres -d otherdatabase -n schema mw2
First I tried to use .dump in stead of tar but the result stays the same; which is an empty schema in my database.
Or the following error message:
pg_restore: [archiver] input file does not appear to be a valid archive
回答1:
https://www.postgresql.org/docs/current/static/app-pgrestore.html
--format=format Specify format of the archive. It is not necessary to specify the format, since pg_restore will determine the format automatically. If specified, it can be one of the following:
custom, directory and tar
https://www.postgresql.org/docs/current/static/app-pgdump.html
--format=format
Selects the format of the output. format can be one of the following:
p plain Output a plain-text SQL script file (the default).
others are custom, directory and tar
in short - you used defualt plain format, which is meant for using with psql, not pg_restore. So either specify different format with pg_dump or use your file as
psql -f mw2.tar
来源：https://stackoverflow.com/questions/48746723/using-pg-dump-and-pg-restore-correctly