COPY CSV keywords

[ discussion moved to hackers.]

Peter Eisentraut wrote:
> Bruce Momjian wrote:
> > I have applied the attached patch that complete TODO item:
> >
> > o -Allow dump/load of CSV format
> >
> > This adds new keywords to COPY and \copy:
> >
> > CSV - enable CSV mode
> > QUOTE - specify quote character
> > ESCAPE - specify escape character
> > FORCE - force quoting of specified columns
>
> FORCE QUOTE
>
> > LITERAL - prevent NULL checks for specific columns
>
> NO NULL CHECK

I considered going this direction, but it broke the WITH clause style of
COPY. Previously it was "WITH keyword value". Now it is also "WITH
keyword value, value" too. This would add "WITH keyword keyword value,
value".

It would change:

COPY pg_language TO '/tmp/x' WITH CSV FORCE lanname
LITERAL lanacl
to:
COPY pg_language TO '/tmp/x' WITH CSV FORCE QUOTE lanname NO
NULL CHECK lanacl

If folks like it, I can make the change.

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