Обсуждение: varchar

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varchar

От
"Alain Roger"
Дата:
Hi,

I would like to allow web site user to fill a field and for that i would need a large varchar()...maybe something around 100.000 characters.
i guess that VARCHAR can not hold so many character and that i should turn to bytea.
Am I right or is there some other possibility ?

i'm asking that because i've seen that bytea has some issues to store non ASCII characters like from UNICODE andSlovak language...

so how can i store central europe characters (UNICODE) into BYTEA field ?

thx,

Alain

Re: varchar

От
Alexander Staubo
Дата:
On Nov 5, 2006, at 15:32 , Alain Roger wrote:

> I would like to allow web site user to fill a field and for that i
> would need a large varchar()...maybe something around 100.000
> characters.
> i guess that VARCHAR can not hold so many character and that i
> should turn to bytea.
> Am I right or is there some other possibility ?

Not at all -- PostgreSQL can fit roughly 1 gigabyte of data in a
single varchar column. Avoid bytea for anything except purely binary
data. Keep in mind that PostgreSQL is not able to index values longer
than ~ 8 kilobytes.

Note that the "text" data type, which is unlimited in length by
definition, is usually preferred over varchar. Read more here:

   http://www.postgresql.org/docs/8.1/interactive/datatype-
character.html

Alexander.