Date: Mon, 14 Nov 2022 22:21:13 +0100
From: Bzzzz <lazyvirus@gmx.com>
To: pgsql-novice@lists.postgresql.org
Subject: Re: hstore or jsonb ?
Message-ID: <20221114222113.513b7253@msi.defcon1.lan>
In-Reply-To: <b9cf20b7b7f28c226d7f7980c352449793acf14e.camel@cybertec.at>
References: <20221114155057.48406b86@msi.defcon1.lan>
	<b9cf20b7b7f28c226d7f7980c352449793acf14e.camel@cybertec.at>
Organization: Anyone, anywhere but in banana demokratik republik of france
 or UERSS.
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
UI-OutboundReport: notjunk:1;M01:P0:l9nsw4/1yfw=;YV1njjqVCgCfIoykKS2hOT5kExH
 ZdWYY7d+DtWxPcBlHBHGfNf51dDFlZ7r/Wbam8v1yGKAglVJNLnpfya8GVCUwws2pHoiFissw
 KNws3fotmQuFEhNBFzKckg7//RLbpMhn8bBIyLtzAA1CgeE1jXJRPwfifMaWM50xGqoUJ7MJ7
 TiGKixUtaCz1ANbxV40XDH2+DQ2snmk00Ge+/daQP0Cs8GR694l99XA5SehmVXQLvrGa55vZS
 ZEOFiGG4BeyWySpXFEVe9rxagIDU6k168FkRAPF3t7Rz3gZ1hhle2pPCTzA4oi8odDd67s715
 vRiZzk1VWPjjoqlzbyfvABAJa1GdCTjhB+rMCdyN7USDZxRLnp2jOYxbnsV110rCSbsxukocZ
 onTbn/rs41hZELJpER99Q5tIHpWI3tbAdpdtpPHRExwW6n0vGYcB9zgKW1dHqm+GRzlsOJik6
 cFDfUVUdgCHQPoUa+YNA70rET/L066Fh3OUIrUwdklq0wfEALt5YjF8s06saV86j/nB095Fjo
 BRxjPZdlJ3CamV8xOTyHTnaYzqZYeT9JHQcUPvOERzC4tzemx9FIVhHKJ81zsfMsjPaBsi5t+
 tUSBBBZATvRyFSLKEWebfXQky8waggtlhRuB2tXwb6sxbZDrEY9wf3cCcnOYaQINOYY9ssEfy
 NWaiQMvegXEcoPggSfXyiIaf/67CvU3qI9VigPAQ4FocAvLQAL9enTgi452aRwulQ98g/hWsW
 uzDb//DU2ktpXiq+z9/rf2VlxKdm1dQ0Cx258na7YNAaUOmK9hBsmoV1b55x3TnqJ9nxtTInZ
 dz06ivypUWQwQwUYuQ+OPbAgtCZUWX0CxUJTsye2ObugWIzvvNH5+Mz7do4b2aRobx14oTtYp
 LXhxY+4P3ZkdRt2bvoJLkvk8jshYwKxdC8Y13fN7/cw18kJsLRQgs0kwrgbERf+gLv0xa8d53
 siNFAjwW0ZExwqlOzDZsnTp+G6I=
Archived-At: 
 <https://www.postgresql.org/message-id/20221114222113.513b7253%40msi.defcon1.lan>
Precedence: bulk

On Mon, 14 Nov 2022 22:03:02 +0100
Laurenz Albe <laurenz.albe@cybertec.at> wrote:

> On Mon, 2022-11-14 at 15:50 +0100, Bzzzz wrote:
> > I'd like to store specs, as they vary a lot from one item to
> > another, hstore or jsonb look like the best solution.
> > 
> > Specs can have 2 levels at most.
> > ie: "color": ["white", "black", "blue"]).
> > 
> > The indexation is mandatory for fulltext accurate researches in
> > (almost) natural language.
> > 
> > So, as the processing is almost the same (maps I/O in Erlang),
> > which one would be the best for my needs, hstore or jsonb ?
> 
> "hstore" is obsolete; don't use it.

Oh, I missed that, so jsonb it'll be.

> > Also, from what I read, the both of them can be easily indexed, but
> > which index is the best, GIN or RUM ?
> > 
> > And furthermore, which index option (XXX_ops), if any, would be the
> > best for the chosen one ?
> 
> That depends on the query you need to support.
> 
> I have no idea what you mean by "fulltext accurate search" in a hstore
> or JSON.

One kind, that will be something like :
SELECT websearch_to_tsquery('english', 'switching power supply
output tension 5 Vcc 5 A') ;

This will be for external, internal queries will specify more to be
more accurate/restrictive.

I can't put specs into columns because they are very different from
one to another family of products, hence the use of json to keep them
as malleable as possible.

Jean-Yves