Re: [PATCH] Compression dictionaries for JSONB

Hi,

On February 9, 2023 2:50:57 AM PST, Aleksander Alekseev <aleksander@timescale.com> wrote:
>Hi Andres,
>
>> > So to clarify, are we talking about tuple-level compression? Or
>> > perhaps page-level compression?
>>
>> Tuple level.
>
>> although my own patch proposed attribute-level compression, not
>> tuple-level one, it is arguably closer to tuple-level approach than
>> page-level one
>
>Just wanted to make sure that by tuple-level we mean the same thing.
>
>When saying tuple-level do you mean that the entire tuple should be
>compressed as one large binary (i.e. similarly to page-level
>compression but more granularly), or every single attribute should be
>compressed separately (similarly to how TOAST does this)?

Good point - should have been clearer. I meant attribute wise compression. Like we do today, except that we would use a
dictionaryto increase compression rates. 

Andres
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