COPY FROM FORMAT CSV FORCE_NULL(*) ?

Started by jian heover 3 years ago3 messages
#1jian he
jian.universality@gmail.com

Hi, there.

copy force null git commit
<https://git.postgresql.org/gitweb/?p=postgresql.git;a=commit;h=3b5e03dca2afea7a2c12dbc8605175d0568b5555&gt;
didn't attach a discussion link. So I don't know if it's already been
discussed.

Current seem you cannot do
COPY forcetest FROM STDIN WITH (FORMAT csv, FORCE_NULL(*));

can we have FORCE_NULL(*)? Since We already have FORCE_QUOTE(*).

--
I recommend David Deutsch's <<The Beginning of Infinity>>

Jian

#2Andrew Dunstan
andrew@dunslane.net
In reply to: jian he (#1)
Re: COPY FROM FORMAT CSV FORCE_NULL(*) ?

On 2022-07-25 Mo 00:18, jian he wrote:

Hi, there.

copy force null git commit
<https://git.postgresql.org/gitweb/?p=postgresql.git;a=commit;h=3b5e03dca2afea7a2c12dbc8605175d0568b5555&gt;
didn't attach a discussion link. So I don't know if it's already been
discussed.

Current seem you cannot do
    COPY forcetest  FROM STDIN WITH (FORMAT csv,  FORCE_NULL(*));

can we have FORCE_NULL(*)? Since We already have FORCE_QUOTE(*). 

We only started adding discussion links in later years. Here's a link to
the original discussion.

</messages/by-id/CAB8KJ=jS-Um4TGwenS5wLUfJK6K4rNOm_V6GRUj+tcKekL2=GQ@mail.gmail.com&gt;

Offhand I don't see why we shouldn't have this. Someone interested
enough would need to submit a patch.

cheers

andrew

--
Andrew Dunstan
EDB: https://www.enterprisedb.com

#3Zhang Mingli
zmlpostgres@gmail.com
In reply to: Andrew Dunstan (#2)
Re: COPY FROM FORMAT CSV FORCE_NULL(*) ?

Hi,

Agree, FORCE_NULL(*) is useful as well as FORCE_NOT_NULL(*).

We can have them both.

They are useful when users copy tables that have many columns.

Regards,
Zhang Mingli

Show quoted text

On Jul 25, 2022, 21:28 +0800, Andrew Dunstan <andrew@dunslane.net>, wrote:

On 2022-07-25 Mo 00:18, jian he wrote:

Hi, there.

copy force null git commit
<https://git.postgresql.org/gitweb/?p=postgresql.git;a=commit;h=3b5e03dca2afea7a2c12dbc8605175d0568b5555&gt;
didn't attach a discussion link. So I don't know if it's already been
discussed.

Current seem you cannot do
    COPY forcetest  FROM STDIN WITH (FORMAT csv,  FORCE_NULL(*));

can we have FORCE_NULL(*)? Since We already have FORCE_QUOTE(*).

We only started adding discussion links in later years. Here's a link to
the original discussion.

</messages/by-id/CAB8KJ=jS-Um4TGwenS5wLUfJK6K4rNOm_V6GRUj+tcKekL2=GQ@mail.gmail.com&gt;

Offhand I don't see why we shouldn't have this. Someone interested
enough would need to submit a patch.

cheers

andrew

--
Andrew Dunstan
EDB: https://www.enterprisedb.com