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

Daniel Gustafsson <daniel@yesql.se>

From: Daniel Gustafsson <daniel@yesql.se>
To: Heikki Linnakangas <hlinnaka@iki.fi>
Cc: pgsql-hackers <pgsql-hackers@postgresql.org>
Date: 2020-10-02T12:06:48Z
Lists: pgsql-hackers
> On 2 Oct 2020, at 13:44, Heikki Linnakangas <hlinnaka@iki.fi> wrote:
> 
> On 01/10/2020 14:21, Daniel Gustafsson wrote:
>>> On 1 Oct 2020, at 12:54, Heikki Linnakangas <hlinnaka@iki.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


Commits

  1. Tidy up error reporting when converting PL/Python arrays.