Re: bytea and text
От | Brian Modra |
---|---|
Тема | Re: bytea and text |
Дата | |
Msg-id | 5a9699850911260652j6c9d23b5nf5d5f587db4d4130@mail.gmail.com обсуждение исходный текст |
Ответ на | bytea and text ("Jean-Yves F. Barbier" <12ukwn@gmail.com>) |
Список | pgsql-novice |
2009/11/26 Jean-Yves F. Barbier <12ukwn@gmail.com>: > Hi list, > > I'm asking myself what solution for storing pictures is the best: > > * using a BYTEA column type, and having no intrinsic compression gain > because a picture it almost every time already compressed, I have not looked into what the internal representation is with BYTEA, but if it is binary, then it will be more efficient than text and base64. > * using a TEXT column type, and store a Base64(picture) in it; it should > take benefits of intrinsic compression (?). One disadvantage of BYTEA is that if you use the escaped format to insert, then you can hit the limit of SQL size. This limit would not be quite as tight if you use base64. If this is the case though, I wonder why base64 isn't an option for the escaped syntax for BYTEA? > > JY > -- > > -- > Sent via pgsql-novice mailing list (pgsql-novice@postgresql.org) > To make changes to your subscription: > http://www.postgresql.org/mailpref/pgsql-novice > -- Brian Modra Land line: +27 23 5411 462 Mobile: +27 79 69 77 082 5 Jan Louw Str, Prince Albert, 6930 Postal: P.O. Box 2, Prince Albert 6930 South Africa http://www.zwartberg.com/
В списке pgsql-novice по дате отправления: