> On 22/11/2022 20:11 CET pbj@cmicdo.com <pbj@cmicdo.com> wrote:
>
> On Tuesday, November 22, 2022 at 01:16:02 PM EST, Peter J. Holzer <hjp-pgsql@hjp.at> wrote:
>
> > On 2022-11-22 17:39:04 +0000, Alastair McKinley wrote:
> > > > \copy footable from 'input.json' (format csv, escape '^B', delimieter '^C
> ', quote '^E')
> > > >
> > > > where the control characters are the actual control char, not the
> > > > caret-letter, and it requires no escaping escapes. I realize this
> > > > won't work for all
> > > > situations.
> > >
> > > Thanks for the suggestion, this is interesting to me to try but I am
> > > not quite sure how this works.
> > > As far as I understand, escape/quote/delimiter have to be a single
> > > character, and CTRL-C etc. are multiple characters.
> >
>
> Yes, Alastair, Peter said what I would have...
>
> > You may have to hit several Keys[1] on your keyboard, but Ctrl-C is a
> > single character, just like Shift-C is (the former has code 0003, the
> > latter 0043).
> >
> > On Unix-like systems you can usually type the control characters by
> > typing Ctrl-V first:
> >
> > At the psql prompt, type
> > select ascii('
> > then hit V while holding the ctrl key
> > then hit C while holding the ctrl key
> > The terminal should display that as ^C
> > then complete the line with
> > ');
> > so that it looks like
> > select ascii('^C');
> > and hit return:
> >
> >
> > [1] There are usually four Ctrl-Characters which need only a single
> > key: Ctrl-I (TAB), Ctrl-M (CR), Ctrl-[ (ESC) and Ctrl-H (BS) or Ctrl-?
> > (DEL).
> >
> > (On Unix systems CR is normally translated to LF, on Windows to CRLF)
> >
Or use C-style escapes[1]:
\copy footable from 'input.json' (format csv, escape e'\2', delimiter e'\3', quote e'\5')
[1] https://www.postgresql.org/docs/current/sql-syntax-lexical.html#SQL-SYNTAX-STRINGS-ESCAPE
--
Erik
