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Need to save UniCode characters to SQLdb- How is this done?

Posted on 2001-06-28
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Last Modified: 2006-11-17
I have a password field that gets encrypted characters. In SQL server the field is an nvarchar an it should accept any character, however it does not. Speaking with Nigel in the SQL expert area he has stated;

"What is the field supposed to hold - you only need ntext if the field needs to be more than 4000 chars.
text fields are a lot more difficult to manipulate than chars so should only be used if necessary.The nvarchar field will accept any unicode character - if it is not then there is probably a problem with your interface. The field needs to be handled as unicode everywhere."

I believe he is on to the answer, but i'm not sure I'm sending unicode to the db or more likely the case I'm not accepting them back. How do I save and retrieve Unicode characters (strings) and why is this a problem?

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Question by:rblackwell
8 Comments
 
LVL 5

Expert Comment

by:raizon
ID: 6235383
I'm not sure if this will work but you can try setting the enctype in the form element (enctype="multipart/form-data").  That is what is required to send non-ascii data via a form.

HTH

Raizon
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LVL 15

Accepted Solution

by:
robbert earned 150 total points
ID: 6235541
This works:

INSERT INTO table (nvarchar-field)
VALUES (N'unicode-string')

However, I didn't find a way to make:

objRst.AddNew
objRst("nvarchar-field") = "unicode-string"
objRst.Update

to work, trying variations.

HTH
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Expert Comment

by:globarena
ID: 6237348
hi rblackwell,

Try with  this:


<META http-equiv=Content-Type content="text/html; charset=unicode">

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LVL 20

Expert Comment

by:Silvers5
ID: 6237471
the form should be unicode and the script code page should be set to your character set:

ussian code page:

<%@ Language=VBScript Codepage=1251%>

or

Session.CodePage=1251

(Session.LCID = 1251  'location identifier, used for currency,date etc formats)


these code page links might help:

http://www.microsoft.com/globaldev/reference/WinCP.asp
http://www.microsoft.com/globaldev/win2k/setup/localsupport.asp
http://www.microsoft.com/globaldev/FAQs/Locales.asp
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Author Comment

by:rblackwell
ID: 6239477
Roberts idea to use "INSERT INTO table (nvarchar-field)
VALUES (N'unicode-string')" seems to be in line with our coding requirments.
The result however is this ->
[Microsoft][ODBC SQL Server Driver][SQL Server]Line 1: Incorrect syntax near 'wyi'.
My SQL statement passed to ADO is this ->
SQL=UPDATE Customers SET PassWord = N 'wyi' WHERE Username = 'rblackwell'

The part 'wyi' is the encoded password with non-ascii chars. Why does it not like the SQL statment???
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LVL 15

Expert Comment

by:robbert
ID: 6239508
I must admit that the N' (and the codepage) thing is all I know. Also, I grabbed my suggestion from somewhere, and it just worked with ASCII characters, and nXX fields in SQL Server (that's a first achievement as nXX fields can't be addressed, otherwise).
Sorry.
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Author Comment

by:rblackwell
ID: 6239520
There was an extra space after the N - now it works.
Thanks Once Again to my man Robert!
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LVL 15

Expert Comment

by:robbert
ID: 6239648
At least, it works somehow :-)
And thanks, I just posted because you're such a "good" questioner.
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