nvarchar

nvarchar(max) vs NText

由 為{幸葍}努か 提交于 2019-11-26 18:49:16
问题 What are the advantages and disadvantages of using the nvarchar(max) vs. NText data types in SQL Server? I don't need backward compatibility, so it is fine that nvarchar(max) isn't supported in older SQL Server releases. Edit: Apparently the question also applies to TEXT and IMAGE vs. varchar(max) and varbinary(max) , for those searching for those data-types later. 回答1: The advantages are that you can use functions like LEN and LEFT on nvarchar(max) and you cannot do that against ntext and

For Nvarchar(Max) I am only getting 4000 characters in TSQL?

由 会有一股神秘感。 提交于 2019-11-26 15:27:54
This is for SS 2005. Why I am i only getting 4000 characters and not 8000? It truncates the string @SQL1 at 4000. ALTER PROCEDURE sp_AlloctionReport( @where NVARCHAR(1000), @alldate NVARCHAR(200), @alldateprevweek NVARCHAR(200)) AS DECLARE @SQL1 NVARCHAR(Max) SET @SQL1 = 'SELECT DISTINCT VenueInfo.VenueID, VenueInfo.VenueName, VenuePanels.PanelID, VenueInfo.CompanyName, VenuePanels.ProductCode, VenuePanels.MF, VenueInfo.Address1, VenueInfo.Address2, '' As AllocationDate, '' As AbbreviationCode, VenueInfo.Suburb, VenueInfo.Route, VenueInfo.ContactFirstName, VenueInfo.ContactLastName, VenueInfo

When must we use NVARCHAR/NCHAR instead of VARCHAR/CHAR in SQL Server?

由 跟風遠走 提交于 2019-11-26 12:36:35
问题 Is there a rule when we must use the Unicode types? I have seen that most of the European languages (German, Italian, English, ...) are fine in the same database in VARCHAR columns. I am looking for something like: If you have Chinese --> use NVARCHAR If you have German and Arabic --> use NVARCHAR What about the collation of the server/database? I don\'t want to use always NVARCHAR like suggested here What are the main performance differences between varchar and nvarchar SQL Server data types

SQL Server 2008: Error converting data type nvarchar to float

由 徘徊边缘 提交于 2019-11-26 11:39:02
问题 Presently troubleshooting a problem where running this SQL query: UPDATE tblBenchmarkData SET OriginalValue = DataValue, OriginalUnitID = DataUnitID, DataValue = CAST(DataValue AS float) * 1.335 WHERE FieldDataSetID = \'6956beeb-a1e7-47f2-96db-0044746ad6d5\' AND ZEGCodeID IN (SELECT ZEGCodeID FROM tblZEGCode WHERE(ZEGCode = \'C004\') OR (LEFT(ZEGParentCode, 4) = \'C004\')) Results in the following error: Msg 8114, Level 16, State 5, Line 1 Error converting data type nvarchar to float. The

Oracle Text will not work with NVARCHAR2. What else might be unavailable?

由 被刻印的时光 ゝ 提交于 2019-11-26 11:22:19
问题 We are going to migrate an application to have it support Unicode and have to choose between unicode character set for the whole database, or unicode columns stored in N[VAR]CHAR2. We know that we will no more have the possibility of indexing column contents with Oracle Text if we choose NVARCHAR2, because Oracle Text can only index columns based on the CHAR type. Apart that, is it likely that other major differences arise when harvesting from Oracle possibilities? Also, is it likely that

For Nvarchar(Max) I am only getting 4000 characters in TSQL?

由 青春壹個敷衍的年華 提交于 2019-11-26 04:26:38
问题 This is for SS 2005. Why I am i only getting 4000 characters and not 8000? It truncates the string @SQL1 at 4000. ALTER PROCEDURE sp_AlloctionReport( @where NVARCHAR(1000), @alldate NVARCHAR(200), @alldateprevweek NVARCHAR(200)) AS DECLARE @SQL1 NVARCHAR(Max) SET @SQL1 = \'SELECT DISTINCT VenueInfo.VenueID, VenueInfo.VenueName, VenuePanels.PanelID, VenueInfo.CompanyName, VenuePanels.ProductCode, VenuePanels.MF, VenueInfo.Address1, VenueInfo.Address2, \'\' As AllocationDate, \'\' As

What are the main performance differences between varchar and nvarchar SQL Server data types?

由 走远了吗. 提交于 2019-11-26 01:34:59
问题 I\'m working on a database for a small web app at my school using SQL Server 2005 . I see a couple of schools of thought on the issue of varchar vs nvarchar : Use varchar unless you deal with a lot of internationalized data, then use nvarchar . Just use nvarchar for everything. I\'m beginning to see the merits of view 2. I know that nvarchar does take up twice as much space, but that isn\'t necessarily a huge deal since this is only going to store data for a few hundred students. To me it

nvarchar concatenation / index / nvarchar(max) inexplicable behavior

由 荒凉一梦 提交于 2019-11-25 22:45:25
问题 I today ran into a really weird problem in SQL Server (both 2008R2 and 2012). I\'m trying to build up a string using concatenation in combination with a select statement. I have found workarounds, but I would really like to understand what\'s going on here and why it doesn\'t give me my expected result. Can someone explain it to me? http://sqlfiddle.com/#!6/7438a/1 On request, also the code here: -- base table create table bla ( [id] int identity(1,1) primary key, [priority] int, [msg]

What is the difference between varchar and nvarchar?

由 心已入冬 提交于 2019-11-25 22:34:45
问题 Is it just that nvarchar supports multibyte characters? If that is the case, is there really any point, other than storage concerns, to using varchars ? 回答1: An nvarchar column can store any Unicode data. A varchar column is restricted to an 8-bit codepage. Some people think that varchar should be used because it takes up less space. I believe this is not the correct answer. Codepage incompatabilities are a pain, and Unicode is the cure for codepage problems. With cheap disk and memory
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