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I'm trying to restore my dump file, but it caused an error:

psql:psit.sql:27485: invalid command \N

Is there a solution? I searched, but I didn't get a clear answer.

1 Answer

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by (40.4k points)

In Postgres, "\N" is used as a substitute symbol for a NULL value. 

But all the psql commands start with backslash "\" symbol. Therefore, you may get the messages like a copy statement fails, but the loading of dump continues. This message will be a false alarm. 

You need to search the lines before,  for the reason why the COPY statement fails.

It's possible to switch psql to "stop on first error" mode and to find error like this:

psql -v ON_ERROR_STOP=1

If you wish to learn SQL then visit this SQL Training.

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