Re: Error code missing for "wrong length of inner sequence" error

From: Daniel Gustafsson <daniel(at)yesql(dot)se>
To: Heikki Linnakangas <hlinnaka(at)iki(dot)fi>
Cc: pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Error code missing for "wrong length of inner sequence" error
Date: 2020-10-02 12:06:48
Message-ID: 03C6B5AE-69E1-46BB-B230-302CE97035BE@yesql.se
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> On 2 Oct 2020, at 13:44, Heikki Linnakangas <hlinnaka(at)iki(dot)fi> wrote:
>
> On 01/10/2020 14:21, Daniel Gustafsson wrote:
>>> On 1 Oct 2020, at 12:54, Heikki Linnakangas <hlinnaka(at)iki(dot)fi> wrote:
>>> Most checks when converting between SQL and Python types use the PLy_elog() function, which uses the genericc ERRCODE_EXTERNAL_ROUTINE_EXCEPTION error code, but I think ERRCODE_ARRAY_SUBSCRIPT_ERROR is better.
>> On that note, wouldn't the dimension check errors in PLySequence_ToArray be
>> just as well off using normal ereport()'s? Only one of them seem to error out
>> in a way that could propagate an error from Python to postgres.
>
> Yes, you are right. I was going to say that we are not very consistent on when to use ereport() and when PLy_elog() in general, but looking closer, we are. Outside the array-conversion functions, PLy_elog() is only used when a Python C API call fails, and ereport() is used otherwise.

I did another scan as well and couldn't find any other offenders.

> Patch attached.

LGTM.

cheers ./daniel

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