The following documentation comment has been logged on the website:
Page: https://www.postgresql.org/docs/14/sql-copy.html
Description:
When copying a csv file into a table, ifthere is a string missing a double
quote in the end, COPY will return an error saying the string is infinitely
long. But placing quote '''' (quote and four single quotes) resolves the
issue. The documentation does not explain why that mechanism would work,
and instead refers to fixing the csv file.