Unicode Is Nvarchar, Ntext, Nchar
Apr 10, 2008
When I tried to insert armenian by doing the following
insert into tablex (field1) values (N'testdata')
it does not display in query analyzer or in the database as armenian.
When I copy this to word it does not convert it.
What else am I supposed to do to get that information to redisplay the correct way and I would appreciate any tutorials or samples you can show or direct me to.
Howard
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Jan 28, 2005
Hi,
We are in process of converting all of the data type of the fields from CHAR/VARCHAR/TEXT into NCHAR/NVARCHAR/NTEXT (DBCS). Having more than 900 store procedure its look like real pain to make modification in all of the SPs.
After failed to find any help from GOOGLE, I am posting this request. I am basically looking for any automated tool which are convert data type in SP based on the field of the table used in the SP. Or at least which can provide me some sort of list which can helpful for doing manual reactoring.
PLEASE HELP ME!!!
Thanks,
Firoz Ansari
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Mar 27, 2004
/* INFO USED HERE WAS TAKEN FROM http://support.microsoft.com/default.aspx?scid=kb;en-us;262499 */
DECLARE @X VARCHAR(10)
DECLARE @ParmDefinition NVARCHAR(500)
DECLARE @Num_Members SMALLINT
SELECT @X = 'x.dbo.v_NumberofMembers'
DECLARE @SQLString AS VARCHAR(500)
SET @SQLString = 'SELECT @Num_MembersOUT=Num_Members FROM @DB'
SET @ParmDefinition = '@Num_MembersOUT SMALLINT OUTPUT'
EXECUTE sp_executesql <-LINE 11
@SQLString,
@ParmDefinition,
@DB = @X,
@Num_MembersOUT = @Num_Members OUTPUT
Just Need Help On This Error
Server: Msg 214, Level 16, State 2, Procedure sp_executesql, Line 11
Procedure expects parameter '@statement' of type 'ntext/nchar/nvarchar'.
I dont know why im getting a errrror b/c I followed http://support.microsoft.com/default.aspx?scid=kb;en-us;262499 exactly
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Aug 8, 2006
I'm connecting to a SQL Server 2005 database using the latest (beta) sql server driver (Microsoft SQL Server 2005 JDBC Driver 1.1 CTP June 2006) from within Java (Rational Application Developer).
The table in SQL Server database has collation Latin1_General_CI_AS and one of the columns is a NVARCHAR with collation Indic_General_90_CI_AS. This should be a Unicode only collation. However when storing for instance the following String:
‚¬_£_ÙÚÜÛùúüû_ÅÆØåæøߣÇçÑñ_¼½¾_ЎўЄєÒ?Ò‘_прÑ?туф_ЂЉЊЋ
... it is saved with ? for all unicode characters as follows (when looking in the database):
‚¬_£_ÙÚÜÛùúüû_ÅÆØåæøߣÇçÑñ_¼½¾_??????_??????_????
The above is not correct, since all unicode characters should still be visible. When inserting the same string directly into the sql server database (without using Java) the result is ok.
Also when trying to retrieve the results again it complains about the following error within Java:
Codepage 0 is not supported by the Java environment.
Hopefully somebody has an answer for this problem. When I alter the collation of the NVARCHAR column to be Latin1_General_CI_AS as well, the data can be stored and retrieved however then of course the unicode specific characters are lost and results into ? So in that case the output is as described above (ie ‚¬_£_ÙÚÜÛùúüû_ÅÆØåæøߣÇçÑñ_¼½¾_??????_??????_????)
We would like to be able to persist and retrieve unicode characters in a SQL Server database using the correct JDBC Driver. We achieved this result already with an Oracle UTF8 database. But we need to be compliant with a SQL Server database as well. Please help.
Thanks in advance for your help.
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Nov 28, 2007
I am running this query to an sql server 2000 database from my aspcode:"select * from MyTable whereMySqlServerRemoveStressFunction(MyNtextColumn) = '" &MyAdoRemoveStressFunction(MyString) & "'"The problem is that the replace function doesn't work with the ntextdatatype (so as to replace the stresses with an empty string). I hadto implement the MySqlServerRemoveStressFunction, i.e. a function thattakes a column name as a parameter and returns the text contained inthis column having replaced some letters of the text (the letters withstress). Unfortunately, I could not do that because user-definedfunctions cannot return a value of ntext.So I have the following idea:"select * from MyTable whereCheckIfTheyAreEqualIngoringTheStesses(MyNtextColum n, '" & MyString &"')"How can I implement the CheckIfTheyAreEqualIngoringTheStessesfunction? (I don't know how to combine these functions to do what Iwant: TEXTPTR, UPDATETEXT, WRITETEXT, READTEXT)
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Apr 3, 2008
Hi,
I am working on an application that uses accent characters.
SELECT nchar(256) returns A. But if I do
SELECT Unicode(A) , then it returns 65 i.e. the value for simple 'A' character. I am confused, because I have data in nvarchar fields,
but when I do string comparison then A and A are treated as equal.
Please let me know, what could be the issue.
Thanks
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Apr 19, 2004
Hi,
Which of the above data type (alongwith size) should be used for storing things like Customer Name, Company name etc . ???
Also, what really is the benefit of one over the over :confused:
Thanks
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Dec 2, 2005
can anybody please explain me why microsoft using nvarchar/nchar instead of varchar/char in northwind database and pubs database. I know if a column holds unicode data you should use nvarchar or nchar but for me all those tables in northwind/pubs are not holding unicode data. but still why microsoft settled for nchar/nvarchar.
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Jul 27, 2007
Could someone please help me by explaining which one is best to use and when? For example, storing the word "Corona Del Mar" - which Data Type would be suggested?
Thanks.
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Jan 9, 2006
Hi All:
I am new to Sql 2000 database,Now I'm planing to create a table in my databse,my table included below fields like this :
PoNo(the length is 15 characters) ,Supplier Name(the length is 50 characters).etc
but I don't how to select the datatype for them. should I select Char or VarChar ?
which one is the best slection ?
thans in advanced!
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Mar 20, 2006
Hey all,
I've got to check an ntext column if it actually does contain unicode characters or not. I would prefer to not have to iterate through every character in each column, is there a simple way to do this in sql server 2000?
Cheers,
-Kilka
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Sep 27, 2005
I am new to SQL Server and would like to hear opinions on pros and cons of using nText vs. nVarChar data type for following uses:
URLs (up to 260 bytes)
Addresses (50-300 bytes)
Descriptions and comments (50-2,000 bytes)
Memos (up to 8000 bytes)
TIA.
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Feb 6, 2007
Hello,
I need to save some news text in an SQL table. The text can be long.
1. Should I use nvarchar(MAX) or nText?
2. And what is the difference between nText and Text?
I am using SQL 2005.
Thanks,
Miguel
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Feb 15, 2008
Dear All,
i'm trying to convert the datatype from ntext to nvarchar.i'm getting error. is it not possible?
Vinod
Even you learn 1%, Learn it with 100% confidence.
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May 24, 2006
I just move our SQL server to version 2005. In new version ntext field is deprecated and documentation says that ntext(max) should be used.
If I have table Table1 and ntext column Column1. When I execute following SQL statements:
alter table Table1 alter column
Column1 nvarchar(max)
go
1.) Are out of row data automatically move to in row?
2.) Or should I also execute something like this ?
update Table1 set Column1 = Column1+'' where Column1 is not null
3.) Is there way to check if data is stored out or in row?
Best regards
edvin
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Feb 19, 2008
Hi,
my question concerns both desktop and device apps.
I'm using sql compact to store some data. I often have to store strings (descriptions, url, etc.) but I don't know when to use nvarchar or ntext.
Nvarchar needs to have a size limit, but I often set it to 8092 when I don't know the actual limit (urls can be very long !).
I fear Ntext because I suppose there is performances impact.
Is there any "rules" to help to choose which data type I'd use ?
Thanks,
Steve
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Jan 22, 2005
I need to sort by an ntext field, but it won't let me do it.
However, if I cast the field as nvarchar(100), I can use ORDER BY on that.
Is there any reason that this is a bad idea? In my testing, ordering by a converted ntext field was actually *faster* than ordering by an nvarchar (same data in the fields).
Josh
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Jan 28, 2004
Hi all
I have a table that contains an ntext column for storing values up to a couple of Mb in size.
However, I estimate that 95% of the values stored in this ntext field will fit into an nvarchar(4000) field.
Is it worth me having both fields in the table?
i.e. For rows where the values < 4000 characters I would store the value in the nvarchar column. Otherwise I would use the ntext column.
Can anyone confirm whether this technique would increase performance given that ntext values are sort of stored separately to the rest of the table data?
A colleague of mine is an Oracle DBA and he mentioned this technique is fairly caommonly adopted in the Oracle world.
Thanks
Matt
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Apr 4, 2008
Hi,
Hello everybody ...
I have a little problem with sqlserver.
When I call my procedure by asp, I send my parameters.
The parameters are nvarchar and arrive as parameter... like
@sentence which is '??t???'.
But I dont know how to apply unicode with parameter @
I explain:
Is it possible to do something like that ... obviously not:
IF @CountryNr = 14
SET @Sentence = N&@Sentence
OU
SET @Sentence = N+@Sentence
Cheers,
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Oct 19, 2006
I have a live SQL 2005 database that has ntext fields, when the ntext fields go over 4000 chars the record can no longer be edited. It throws a string or binary data would be truncated error. I tried turning text in row OFF, but it did not work. Can anyone forsee any problems with changing the ntext fields to nvarchar(max) in the live database? Also, I came across sp_tableoption N'MyTable', 'large value types out of row', 'ON', does this work for ntext also? sp_tableoption N'MyTable', 'text in row', 'OFF' did not do anything.Any help would be appreciated.
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Apr 4, 2007
Like in the subject: What are the cons and pros of using nvarchar(max) versus ntext?
Does it have something to do with having to enable full text search perhaps in the latter case?
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Jul 23, 2005
Hi all,I need to store data into about 104 columns. This is problematic with MSSQL, since it doesn't support rows over 8kb in total size.Most of the columns are of type NVARCHAR(255), which means we can't havemore than 8092/(255*2) = 15 columns of this type.With a row length of more than 8kb, SQL gives a warning that any rows overthat amount will be truncated.So far I'm seeing two possible solutions to this problem:1. Split data into multiple tables with the same ID column accross alltables, and then join them on SELECT statements.2. Use NTEXT instead of NVARCHAR. NTEXT's length is 16 bytes because itcontains a pointer to the actual value stored somewhere else. However, NTEXTdoesn't support regular indexing, only through a Full-Text Index catalog. Inthis case I'll need to user "WHERE CONTAINS(columnName, 'sometext')" toperform searches, which is bearable.I'm inclined toward #2. However I haven't used Full-Text indices before anddon't know their limitations. Will I run into problems with NTEXT? Is therea better solution?Thanks.-Oleg.
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Oct 2, 2007
I hope this is the right forum for this question, my apologies in advance if it isn't....
We have a web based CGI product (written in C++ VS 6) that uses ODBC and takes text from a submitted web page and stores it in a SQL Server table in a field of type "ntext". The user in question is copying and pasting this text from an MS Word 2003 document. After the initial save our app errors out trying to access the table it just wrote to, and when we look in the table we see that up to **200 carriage returns** have been mysteriously inserted into the ntext field!! (Our product has been out in the field with no such problem for several years, so we are thinking it's related to something specific the customer is doing - perhaps with using MS Word for the source text.) We have tried but cannot duplicate the problem, but the customer sees it with each attempt to modify the table in question. The only thing that I see out of the ordinary is that the field in question is of type "ntext" - which supports unicode, instead of nvarchar. Does any of this ring a bell for anybody? I'm thinking of changing the field type to nvarchar to see if that solves the problem.
Thanks, Steve Bradbery
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Nov 8, 2006
MS SQL 2000. Does anyone know how to find all rows where an nvarchar column contains a specific unicode character? Is it possible without creating a user defined function? Here's the issue. I have a table Expression (ExpID, ExpText) with values like 'x < 100' and 'y ≤ 200'. where the second example contains Unicode character 8804 [that is, nchar(8804)]. Because it's unicode, I don't seem to be able to search for it with LIKE or PATINDEX. These fail:
SELECT * FROM Expression WHERE ExpText LIKE '%≤%' -- no recordsSELECT * FROM Expression WHERE PATINDEX('%≤%', ExpText) -- no records
However, SELECT PATINDEX('%≤%', 'y ≤ 200') will return 3.
Any suggestions? Thanks in advance.
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Feb 1, 2007
Hi,
i have a table with a nvarchar column,i want to send this column value as unicode content to customer mail box , but when i send it a mail with '?' customer receive , how can i accomplish this?
thanks
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Dec 9, 2007
Is there any way to convert Unicode (NVarchar) to Ascii (Varchar)?
If I just use cast , the result will become ???.
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Dec 14, 2004
I want to retrieve data from SQL containing non English character but fail, can anyone shed me some light?
What I use currently:
Dim strSQL As String
strSQL = "SELECT ArticleID, "
strSQL &= "ISNULL(Body, '') AS Body, "
strSQL &= "ISNULL(Subject, '') AS Subject "
strSQL &= "FROM Articles "
strSQL &= "WHERE (Subject LIKE N'%' + @Keyword + '%' OR [Body] LIKE N'%' + @Keyword + '%') "
Dim con As New SqlConnection(ConfigurationSettings.AppSettings("ConnectionString"))
Dim cmd As New SqlDataAdapter(strSQL, con)
cmd.SelectCommand.Parameters.Add("@Keyword", SqlDbType.NVarChar).Value = keyword
...
I'm not so sure where should I place the letter "N", I use :
SELECT ArticleID,
ISNULL(Body, '') AS Body,
ISNULL(Subject, '') AS Subject,
FROM Articles
WHERE (Subject LIKE N'%SomeNonEnglishString%' OR [Body] LIKE N'%SomeNonEnglishString%')
in Query Analzyer, it works! But it failed in my program... oh my god...
Thanks a lot!
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May 6, 2015
In my package , I am used CDC Source transformation and received the Net changes then insert into Destination. But whatever Data coming from CDC source data type Varchar value needs to Converting Non Unicode string to Unicode string SSIS. So used Data conversion transformation to achieved this.  I need to achieve this without data conversion.
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Aug 7, 2012
I am following the SSIS overview video- URL...I have a flat file that i want to import the contents onto a SQL database.I created a Dataflow task, source file and oledb destination.I am getting the folliwung error -"column "A" cannot convert between unicode and non-unicode string data types".in the origin file the data type is coming as string[DT_STR] and in the destination object it is coming as "Unicode string [DT_WSTR]"I used a data conversion object in between, dosent works very well
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Jul 28, 2005
Good afternoon
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Sep 9, 2015
I have an SSIS package that pulls data from a MYSQL DB (Using RSSBus for Salesforce in SSIS to accomplish this). Most of the columns are loading properly, but I have many columns that I need to convert.
I have been using the Data Conversion dataflow task in SSIS to convert the rows.
I have 2 data conversions that work on most of the columns, but the DESCRIPTION column continues to return an error saying "Cannot convert between unicode and non-unicode types", regardless of what I choose on the Data Conversion task. So, basically I want to dump this column data into a SQL table with NVARCHAR datatypes. Here is what I am doing in my SSIS package...
1) Grab subset of data from SOURCE
2) Converts to TEXTSTREAM. (Data Conversion)
3) Converts to STRING. (Data Conversion)
4) Load Destination table. (OLE DB Destination)
I have also tried to simply convert the values to STRING, but that doesn't work either.
So, I have 2 Data Conversions working here that process most of the data correctly. What I can do to load the DESCRIPTION column?
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May 14, 2008
Hi guys and gals,
I've had some great headaches with SSIS this morning, which I have managed to get a workarounds for, but I'm not happy with them so I've come to ask for advice.
Basically, I am exporting data from an SQL Server database into an Excel spreadsheet and hitting issues with unicode and non-unicode data types.
For example, I have a column that is char(6) and have added a data conversion step to the data flow, which converts it to type DT_WSTR and then everything works!
However, this seems like a completely un-neccessary step as I should be able to do the conversion in T-SQL - but no matter what I try I keep getting the same problem.
SELECT Cast(employee_number As nvarchar(255)) As [employee_number]
FROM employee
WHERE forename = 'george'
ErrorValidation error. details: 1 [1123]: Column "employee_number" cannot convert between unicode and non-unicode string data types.
I know I have a solution (read: workaround) but I really don't want to do this everytime!
Any suggestions for what else to try?
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Apr 6, 2006
I have an Excel Source component hooked to an OLE DB Destination component in my SSIS 2005 Data Flow Task. After I mapped the excel columns to the OLE DB table columns i get these errors below. I noticed that for the first error, the Excel Field format (when you mouse over the column name in the mappings section in OLE DB component) is of type [DTWSTR] and the corresponding SQL field from my SQL table that it's mapping to is of type [DT_STR] when mousing over that field in the mappings in the properties of my OLE DB component. All table fields in SQL Server for the table I'm inserting into are of type varchar.
print screens here:
http://www.webfound.net/excel_ssis.jpg
http://www.webfound.net/excel_to_oledb_mappings.jpg
Package Validation Error
------------------------------
ADDITIONAL INFORMATION:
Error at Data Flow Task [OLE DB Destination [27]]: Columns "Commission Agency" and "CommissionAgency" cannot convert between unicode and non-unicode string data types.
Error at Data Flow Task [OLE DB Destination [27]]: Column "Product" cannot convert between unicode and non-unicode string data types.
Error at Data Flow Task [OLE DB Destination [27]]: Columns "Officer Code" and "OfficerCode" cannot convert between unicode and non-unicode string data types.
Error at Data Flow Task [OLE DB Destination [27]]: Columns "Agency Name" and "AgencyName" cannot convert between unicode and non-unicode string data types.
Error at Data Flow Task [OLE DB Destination [27]]: Columns "Agency Id" and "AgencyID" cannot convert between unicode and non-unicode string data types.
Error at Data Flow Task [OLE DB Destination [27]]: Columns "Tran Code" and "TranCode" cannot convert between unicode and non-unicode string data types.
Error at Data Flow Task [OLE DB Destination [27]]: Columns "User Id" and "UserID" cannot convert between unicode and non-unicode string data types.
Error at Data Flow Task [OLE DB Destination [27]]: Columns "Acct Number" and "AccountNumber" cannot convert between unicode and non-unicode string data types.
Error at Data Flow Task [DTS.Pipeline]: "component "OLE DB Destination" (27)" failed validation and returned validation status "VS_ISBROKEN".
Error at Data Flow Task [DTS.Pipeline]: One or more component failed validation.
Error at Data Flow Task: There were errors during task validation.
(Microsoft.DataTransformationServices.VsIntegration)
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