Re: Difference between C and en_US.UTF-8 Collate & CType in Postgres 10.x
| От | Debraj Manna |
|---|---|
| Тема | Re: Difference between C and en_US.UTF-8 Collate & CType in Postgres 10.x |
| Дата | |
| Msg-id | CAF6DVKOy4tadA3Acz_qp_44oF442KgSKiKU7KbSnKNRCo-Vp=g@mail.gmail.com обсуждение исходный текст |
| Ответ на | Re: Difference between C and en_US.UTF-8 Collate & CType inPostgres 10.x (Laurenz Albe <laurenz.albe@cybertec.at>) |
| Ответы |
Re: Difference between C and en_US.UTF-8 Collate & CType in Postgres 10.x
Re: Difference between C and en_US.UTF-8 Collate & CType inPostgres 10.x |
| Список | pgsql-admin |
Thanks for replying.
Will there be any other difference like in terms of index size, etc?
Is there any link that I can refer that provides more details about the differences?
On Fri 14 Sep, 2018, 5:27 PM Laurenz Albe, <laurenz.albe@cybertec.at> wrote:
Debraj Manna wrote:
> Can someone let me know what is the difference we are expected to observe if we set
> Collate & Ctype to C as against en_US.UTF-8 with encoding set to UTF8 in both the cases ?
For one, the ordering will be substantially different.
Compare the result of these two queries:
SELECT chr(i) FROM generate_series(1, 50000) i ORDER BY chr(i) COLLATE "C";
SELECT chr(i) FROM generate_series(1, 50000) i ORDER BY chr(i) COLLATE "en_US.utf8";
Yours,
Laurenz Albe
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