Writing strings with chars 128-160 to an varchar column

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Writing strings with chars 128-160 to an varchar column

martin.vd.graaff

SSC Journeyman

Points: 88
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March 3, 2009 at 1:19 am

#99508

I am trying to write a string containing chars in the range 128-160 to an varchar column.
Chars in the range 128-160 are however converted to char 63.
How can I write chars in the 128-160 to the db?
I guess this shouldn't be too difficult, you just have to know how to.
Thanks in advance for your help!
Martin

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dmoldovan SSCertifiable Points: 6334 More actions · Answer 1

dmoldovan

SSCertifiable

Points: 6334

March 3, 2009 at 2:56 am

#952279

Please post your code.

Ron McCullough SSC Guru Points: 63877 More actions · Answer 2

Might I suggest you read this from Books On Line:

ms-help://MS.SQLCC.v9/MS.SQLSVR.v9.en/udb9/html/e123fb74-022e-4a62-9639-b2053a9b4d7e.htm

Is it possible for you to change your columns data type from varchar to nvarchar (unicode character)?

If everything seems to be going well, you have obviously overlooked something.

Ron

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tcnolan SSCrazy Points: 2097 More actions · Answer 3

You shouldn't have a problem with using varchar and CHAR for the characters you are talking about... see the following...

Running this code...

DECLARE @i int

DECLARE @STR varchar(222)

SET @i = 33 /*Start at 33 to skip SPACE and non-printable characters */

SET @STR = ''

WHILE (SELECT @i) < 256

BEGIN

SET @STR = @STR + CHAR(@i)

SET @i = @i + 1

END

PRINT @STR

Returns the following...

!"#$%&'()*+,-./0123456789:; ?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ ¡¢£¤¥¦§¨©ª«¬®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþ

martin.vd.graaff SSC Journeyman Points: 88 More actions · Answer 4

I attached the C# code of the test application including the SQL command to create a test table

It works if I use an nchar column, but I know it is possible to store the data in a varchar column without loss of data, because this is done somehow from a C++ application using ODBC.

So I want to know how to do it while using a varchar column.

Thanks,

Martin

Mark Cowne One Orange Chip Points: 26944 More actions · Answer 5

I think the problem is the unicode->ascii conversion that is happening somewhere along the way. C# strings are always 16-bit.

Try changing

parameters.Add("@TestColumn", SqlDbType.NVarChar);

parameters["@TestColumn"].Value = str;

to

parameters.Add("@TestColumn", SqlDbType.VarBinary);

parameters["@TestColumn"].Value = Encoding.GetEncoding(28591).GetBytes(str);

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