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From: Peter Eisentraut <peter.eisentraut@2ndquadrant.com>
To: Dagfinn Ilmari Mannsåker <ilmari@ilmari.org>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Pavel Stehule <pavel.stehule@gmail.com>
Cc: Nikita Glukhov <n.gluhov@postgrespro.ru>
Cc: PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Subject: Re: Transform for pl/perl
Date: Mon, 30 Apr 2018 13:27:31 -0400
Message-ID: <cf26408a-c01f-03c4-5df3-edf2e81ef526@2ndquadrant.com> (raw)
In-Reply-To: <d8ja7ubjnyp.fsf@dalvik.ping.uio.no>
References: <20171127132439.23dc26ef@anthony-24-g082ur>
	<20171201184921.27he6vbp62yegpvm@alvherre.pgsql>
	<20171207125455.39067aa7@anthony-24-g082ur>
	<20171207125602.5326f103@anthony-24-g082ur>
	<CAEepm=02=Ya7p=-X5Of=JD-+9+bmmwnpd9nr8AeVnOopB6Y+NQ@mail.gmail.com>
	<20180112114739.6a9f0d4c@anthony-24-g082ur>
	<20180131103621.GA19345@zakirov.localdomain>
	<20180215125313.290468ae@anthony-24-g082ur>
	<CAFj8pRCYBPFGZG5LHdfY1Ej+a_9sb3ugyDkUaJGD37UjpRpA8Q@mail.gmail.com>
	<20180312110821.29c80420@anthony-24-g082ur>
	<CAFj8pRDaTYHD30CP8u2v_wwsJfxFBfthcNEp_KgEOHVN0gUfAw@mail.gmail.com>
	<505345c5-0159-077d-f64e-60afb01e5fbe@postgrespro.ru>
	<CAFj8pRB1mLEvmnhRL9HheF6yeKPvuzBf2tQ=s+2QXGpnCJdbqQ@mail.gmail.com>
	<26a0840a-6b09-44fc-9e4e-8200c1887882@2ndquadrant.com>
	<d8jtvskjzzs.fsf@dalvik.ping.uio.no>
	<d8jefjojudc.fsf@dalvik.ping.uio.no>
	<15075.1523287460@sss.pgh.pa.us>
	<d8ja7ubjnyp.fsf@dalvik.ping.uio.no>

These two items are now outstanding:

On 4/10/18 07:33, Dagfinn Ilmari Mannsåker wrote:
> 2) jsonb scalar values are passed to the plperl function wrapped in not
>    one, but _two_ layers of references

I don't understand this one, or why it's a problem, or what to do about it.

> 3) jsonb numeric values are passed as perl's NV (floating point) type,
>    losing precision if they're integers that would fit in an IV or UV.

This seems fixable, but perhaps we need to think through whether this
will result in other strange behaviors.

-- 
Peter Eisentraut              http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services




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