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From: David G. Johnston <[email protected]>
To: Jim Jones <[email protected]>
Cc: jian he <[email protected]>
Cc: Yugo NAGATA <[email protected]>
Cc: torikoshia <[email protected]>
Cc: PostgreSQL Hackers <[email protected]>
Subject: Re: Change COPY ... ON_ERROR ignore to ON_ERROR ignore_row
Date: Fri, 16 Feb 2024 13:31:25 -0700
Message-ID: <CAKFQuwaYNw8U-9JkFdyOX4i4Y3J1sp6+dk-sh8YmZGCq8gMeVQ@mail.gmail.com> (raw)
In-Reply-To: <[email protected]>
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On Fri, Feb 16, 2024 at 1:16 PM Jim Jones <[email protected]> wrote:

> In case all columns of a record have been set to null due to data type
> incompatibility, should we insert it at all?


Yes.  In particular not all columns in the table need be specified in the
copy command so while the parsed input data is all nulls the record itself
may not be.

The system should allow the user to exclude rows with incomplete data by
ignoring a not null constraint violation.

In short we shouldn't judge non-usefulness and instead give tools to the
user to decide for themselves.

David J.


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