Re: tsvector field length limitation
| От | Jonathan Marks |
|---|---|
| Тема | Re: tsvector field length limitation |
| Дата | |
| Msg-id | 09ECA82E-C221-4D79-B2FC-5493F330B6EB@gmail.com обсуждение |
| Ответ на | Re: tsvector field length limitation (Tom Lane <tgl@sss.pgh.pa.us>) |
| Ответы |
Re: tsvector field length limitation
|
| Список | pgsql-general |
What if we just didn’t use positional arguments at all? I.e. we just populate the tsvector with lexemes only?
> On Jun 20, 2018, at 10:49 AM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
>
> Jonathan Marks <jonathanaverymarks@gmail.com> writes:
>> ... we run into the max tsvector length requirement "The length of a tsvector (lexemes + positions) must be less
than1 megabyte”
>
>> Is there any way to disable or increase that limit in Postgres 10.3?
>
> No; it's forced by the representation used for tsvector, which stores
> lexeme offsets in 20-bit fields (cf WordEntry in
> src/include/tsearch/ts_type.h). Perhaps that was short-sighted but
> I don't foresee it changing anytime soon. You'd more or less need
> a whole new datatype ("bigtsvector"?) to make it happen.
>
> regards, tom lane
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