Stef <svb@ucs.co.za> writes:
> Here's what I did to recreate the problem :
> ...
> Welcome to psql 7.3.4, the PostgreSQL interactive terminal.
Ah. I was checking it in 7.4. I thought we'd fixed this issue further
back than 7.4, but some digging in the CVS logs shows not:
2003-10-05 22:38 tgl
* doc/src/sgml/ref/copy.sgml, src/backend/commands/copy.c: Modify
COPY FROM to match the null-value string against the column value
before it is de-backslashed, not after. This allows the null
string \N to be reliably distinguished from the data value \N
(which must be represented as \\N). Per bug report from Manfred
Koizar ... but it's amazing this hasn't been reported before ...
Also, be consistent about encoding conversion for null string: the
form specified in the command is in the server encoding, but what
is sent to/from client must be in client encoding. This never
worked quite right before either.
regards, tom lane
