nvarchar

We are building a Java application backed by an Oracle database that we access using JDBC (drivers ojdbc6.jar and orai18n.jar ). The database schema stores text columns primarily using the NVARCHAR2 data type. The JDBC documentation for the JDBC ResultSet says that getNString() is particularly intended for use with the NCHAR, NVARCHAR etc. data types, but at the moment we are only using getString() . This seems to work fine, so I am wondering why I should use getNString() rather than getString() . Is getString() going to start failing if non-ASCII characters are entered, or is the Oracle JDBC

Assuming following definition: /// <summary> /// Replaces each occurrence of sPattern in sInput with sReplace. This is done /// with the CLR: /// new RegEx(sPattern, RegexOptions.Multiline).Replace(sInput, sReplace). /// The result of the replacement is the return value. /// </summary> [SqlFunction(IsDeterministic = true)] public static SqlString FRegexReplace(string sInput, string sPattern, string sReplace) { return new Regex(sPattern, RegexOptions.Multiline).Replace(sInput, sReplace); } Passing in a nvarchar(max) value for sInput with a length > 4000 will result in the value being truncated

What is the good approach to keep a nvarchar field unique. I have a field which is storing URLs of MP3 files. The URL length can be anything from 10 characters to 4000. I tried to create an index and it says it cannot create the index as the total length exceeds 900 bytes. If the field is not indexed, it's going to be slow to search anything. I am using C#, ASP.net MVC for the front end. You could use CHECKSUM command and put index on column with checksum. --*** Add extra column to your table that will hold checksum ALTER TABLE Production.Product ADD cs_Pname AS CHECKSUM(Name); GO --*** Create

We are migrating some data from sql server to oracle. For columns defined as NVARCHAR in SQL server we started creating NVARCHAR columns in Oracle thinking them to be similar..But it looks like they are not. I have read couple of posts on stackoverflow and want to confirm my findings. Oracle VARCHAR2 already supports unicode if the database character set is say AL32UTF8 (which is true for our case). SQLServer VARCHAR does not support unicode. SQLServer explicitly requires columns to be in NCHAR/NVARCHAR type to store data in unicode (specifically in the 2 byte UCS-2 format).. Hence would it be

Can someone please explain this: SELECT CASE WHEN CAST('iX' AS nvarchar(20)) > CAST('-X' AS nvarchar(20)) THEN 1 ELSE 0 END, CASE WHEN CAST('iX' AS varchar(20)) > CAST('-X' AS varchar(20)) THEN 1 ELSE 0 END Results: 0 1 SELECT CASE WHEN CAST('i' AS nvarchar(20)) > CAST('-' AS nvarchar(20)) THEN 1 ELSE 0 END, CASE WHEN CAST('i' AS varchar(20)) > CAST('-' AS varchar(20)) THEN 1 ELSE 0 END Results: 1 1 On the first query, the nvarchar() result is not what I'm expecting, and yet removing the X make the nvarchar() sort happen as expected. (My original queries used the '' and N'' literal syntax to

In SQL Server 2008 (TSQL), I've created a stored procedure like this: CREATE PROCEDURE SP_1_10_2 AS declare @mostValuableBook nvarchar(255) SELECT @mostValuableBook = Name FROM books WHERE price = ( SELECT MAX(price) FROM books WHERE izd LIKE '%BHV%' ); return @mostValuableBook GO But, when I'm trying to execute it: declare @x nvarchar(255) EXECUTE @x = SP_1_10_2; SELECT 'The most expensive BHV book:', @x AS 'Name' GO I'm getting an error: Conversion failed when converting the nvarchar value 'Internet Explorer 3 original' to data type int. It seems like the problem is in the line EXECUTE @x =