Re: Why the index is not used ?

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От Francisco Olarte
Тема Re: Why the index is not used ?
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Msg-id CA+bJJbxJuM4RQ=qMwQOF4Gep+y4w6a0Ym_ta7e_NBZH0p1sC2w@mail.gmail.com
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Ответ на RE: Why the index is not used ?  (ROS Didier <didier.ros@edf.fr>)
Ответы RE: Why the index is not used ?  (ROS Didier <didier.ros@edf.fr>)
RE: Why the index is not used ?  (ROS Didier <didier.ros@edf.fr>)
RE: Why the index is not used ?  (ROS Didier <didier.ros@edf.fr>)
Список pgsql-sql
ROS:

On Sun, Oct 7, 2018 at 3:13 PM, ROS Didier <didier.ros@edf.fr> wrote:
....
> -        INSERT INTO cartedecredit(username,cc)  SELECT 'individu ' || x.id, pgp_sym_encrypt('test value ' || x.id,
'motdepasse','compress-algo=2,cipher-algo=aes256') FROM generate_series(1,100000) AS x(id);
 
> -        CREATE INDEX idx_cartedecredit_cc02 ON cartedecredit(pgp_sym_decrypt(cc, 'motdepasse','compress-algo=2,
cipher-algo=aes256'));

If my french is not too rusty you are encrypting a credit-card, and
then storing an UNENCRYPTED copy in the index. So, getting it from the
server is trivial for anyone with filesystem access.

Francisco Olarte.


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