Re: Error while loading sql file

From: Adarsh Sharma <adarsh(dot)sharma(at)orkash(dot)com>
To: Alban Hertroys <haramrae(at)gmail(dot)com>
Cc: pgsql-general General <pgsql-general(at)postgresql(dot)org>
Subject: Re: Error while loading sql file
Date: 2011-12-27 05:32:41
Message-ID: 4EF95879.6080406@orkash.com
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Thanks for the Explaination,
I find it hard to determine the way to store data in different encodings
to store in postgresql, below is the demo of some data :-

INSERT INTO conceptnet_frame
VALUES(3884,'ja','{1}?{2}???????',16,3,2140,NULL,NULL,NULL);
INSERT INTO conceptnet_frame
VALUES(3885,'ja','{1}?{2}??????????',31,3,2140,NULL,NULL,NULL);
INSERT INTO conceptnet_frame
VALUES(3886,'ja','{1}?{2}??????????????',31,3,2140,NULL,NULL,NULL);
INSERT INTO conceptnet_frame
VALUES(3887,'ja','{1}?{2}??????????',31,3,2140,NULL,NULL,NULL);
INSERT INTO conceptnet_frame
VALUES(3888,'ja','{1}????????{2}???????',29,3,2140,NULL,NULL,NULL);
INSERT INTO conceptnet_frame
VALUES(3889,'ja','{1}??????{2}??????',28,3,2140,NULL,NULL,NULL);
INSERT INTO conceptnet_frame
VALUES(3890,'ja','{1}??{2}???????????',14,3,2140,NULL,NULL,NULL);
INSERT INTO conceptnet_frame
VALUES(3891,'ja','{2}????????{1}??????',9,3,2140,NULL,NULL,NULL);

Below link explains all the things :-
http://www.depesz.com/index.php/2010/03/07/error-invalid-byte-sequence-for-encoding/

Above link shows the above encoding schemes is in utf16 format but
postgresql-8.4 doesn't support it.
Is there any way to store data in different encoding in a utf-8 database.

Happy Holidays!

Alban Hertroys wrote:
> On 26 Dec 2011, at 8:22, Adarsh Sharma wrote:
>
>
>> Dear all,
>>
>> I am facing a unique issue when I try to load an sql into a postgresql database :-
>>
>
> Actually, your issue isn't unique at all. You'll find it reoccurs on this list regularly, although perhaps less frequent these days.
>
>
>> I faced an issue some days ago & I solved the issue by the below command :
>> cat backup.sql | recode iso-8859-1..u8 > backup.sql
>>
>
> That command assumes that every string in the sql file is encoded as iso-8859-1 (unless it already is unicode).
>
>
>> But this time the byte sequence changes to Japanese , & I fail to solve the issue. Please let me know how to solve the issue as typing the error in Google shows only one link:
>> ( http://blog.e-shell.org/134 )
>>
>
> The above recode command works for the guys in the blog post you linked, as they were converting a database with Spanish data to UTF-8. They knew what encoding they were coming from.
>
> In your case, you have a mixed bag of encodings, going all the way from latin encodings to japanese.
>
> I'm not sure what recode would do to data that's in a different encoding than the specified source encoding - I expect that it will just assume it's in the specified source encoding (it cannot know that this isn't the case for a particular string) and attempt to convert it to UTF-8 _using that encoding_.
>
> Chances are you just converted valid data in a different encoding (than the source encoding you specified) into garbage in UTF-8... I seem to recall that if recode runs into problems recoding a string to UTF-8 it will leave it untouched, but that will NOT happen in all cases. Sometimes it will succeed, even though the result has no meaning to a human.
>
> That's a nasty problem you ran into, I hope the archives provide the wisdom you need.
>
> Alban Hertroys
>
> --
> Screwing up is an excellent way to attach something to the ceiling.
>
>

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