[postgis-users] [postgis-devel] Upgrade issues

[James Sewell]

>
>
>> >  I can't answer is how this has not been hit before???
>>
>> Yeah, hard to believe, this is very old code… I guess people just don’t
>> use non-WGS84 geography very often, or if they do they don’t think to set
>> up their type constraints to enforce it. Or they’ve never got around to
>> upgrading.
>>
>> Anyways, the offending code is very old, and here it is:
>>
>>
>> https://github.com/postgis/postgis/blob/svn-trunk/postgis/gserialized_typmod.c#L296
>>
>> When reading in the string “geography(point, 4267)” a typmod string, in
>> the case of geography, the system checks that the provided SRID number is
>> in fact a geodetic coordinate system and WHoops, if this is running in the
>> context of pg_upgrade, that means it needs to read spatial_ref_sys, even
>> though it’s still at the “setting up the schemas” stage of the process.
>>
>> Since this problem has been around forever, that kind fo points to the
>> fact that maybe enforcing the geodetic nature of geography typmods isn’t
>> the most important piece of data integrity checking we have to do, so the
>> simplest fix would be to excise this check in all patch releases. Then the
>> fix would be to upgrade to the latest patch releases before upgrading.
>>
>> P.
>>
>
> Interesting, that looks like exactly what I was after (but didn't want to
> ask as removing checks is mostly frowned upon).
>
> In the meantime I suppose I'll patch up a version for my import and be on
> my way.
>
> Thanks for the quick replies!
>

Just confirming that I have removed that line and verified that pg_upgrade
works as expected.

Looking forward to this hitting a (the next?)  patch update soon.

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