Re: how to insert hex data into UTF-8 column?

very cool. did not see that part.

what I do not follow now is why does UX'00C2' get stored in UTF-8 as
x'C382' ? I guess because of the variable number of bytes nature of
UTF-8. All the regular ASCII characters are represented with a single byte
in UTF-8.

been having to spend a lot of time tracking down problems when my web apps
push bad data into the DB2 database. Somehow an invalid UTF-8 character is
being stored in the CCSID 1208 column. Once that happens, the PHP
json_encode function returns an empty string. What I am planning to do is
write an SQL function that scans the UTF-8 column for bad characters and
returns the byte location of that character. Then use SUBSTRING with the
OCTETS option to remove it.
https://www.ibm.com/support/knowledgecenter/en/SSEPEK_11.0.0/sqlref/src/tpc/db2z_bif_substring.html



On Sun, Mar 10, 2019 at 6:10 PM Jon Paris <jon.paris@xxxxxxxxxxxxxx> wrote:

I'm not sure what solution you drew from that thread Steve - but it seems
to me that the only thing needed is to add U to the string to indicate that
it is a Unicode hex string and not a character hex string. So this:

insert into repcat52 ( catnum, catname, desc, desc_utf)
values( 1, 'WAVE', x'818283F1F2F3', Ux'003100320033');

Works just fine.


Jon Paris

www.partner400.com
www.SystemiDeveloper.com

On Mar 10, 2019, at 6:02 PM, Steve Richter <stephenrichter@xxxxxxxxx>

wrote:

this post has a lot of good info.

https://www.ibm.com/developerworks/community/forums/html/topic?id=4fddf9b9-b8d3-4ba3-9824-476d6a2efa48

do not follow why DB2 would want to translate hex data. The point of

hex

is to bypass any character translation.


On Sun, Mar 10, 2019 at 1:29 PM Steve Richter <stephenrichter@xxxxxxxxx>
wrote:

On Sun, Mar 10, 2019 at 12:43 PM Jon Paris <jon.paris@xxxxxxxxxxxxxx>
wrote:

I'm guessing that by default it is expecting the hex values to be

EBCDIC. This works:

insert into repcat52 ( catnum, catname, desc, desc_utf)
values( 1, 'WAVE', x'818283F1F2F3',
x'F1F2F3');

I am looking to insert some multibyte UTF-8 characters. like x'C383'.

https://www.fileformat.info/info/charset/UTF-8/encode.htm

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