Thread: COPY FROM FORMAT CSV FORCE_NULL(*) ?

COPY FROM FORMAT CSV FORCE_NULL(*) ?

From
jian he
Date:
Hi, there.

copy force null git commit 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


Re: COPY FROM FORMAT CSV FORCE_NULL(*) ?

From
Andrew Dunstan
Date:
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>
> 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.



<https://www.postgresql.org/message-id/flat/CAB8KJ%3DjS-Um4TGwenS5wLUfJK6K4rNOm_V6GRUj%2BtcKekL2%3DGQ%40mail.gmail.com>


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




Re: COPY FROM FORMAT CSV FORCE_NULL(*) ?

From
Zhang Mingli
Date:
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
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>
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.


<https://www.postgresql.org/message-id/flat/CAB8KJ%3DjS-Um4TGwenS5wLUfJK6K4rNOm_V6GRUj%2BtcKekL2%3DGQ%40mail.gmail.com>


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