Can someone please explain to me how the datapages in Microsoft SQL Server 2000 works. The pages are supposed to be 8K, that is 8192 bytes of which only 8060 are accessible for data storage (due to overhead).
Now, I currently have a table containing 8 fields. Two of these fields are varchar and should be converted to nvarchar. One of the varchar fields is limited to 255 characters and the other to 4000 characters. When I convert the 255 characters field to nvarchar it works just fine, but when I want to convert the 4000 characters field I get an error from MS SQL saying that it gets to big. Is the error only for the 4000 characters field (which growths to 8000 bytes when using nvarchar instead of varchar) or must the whole table fit into one datapage?
Could a blob maybe solve my problem, or will I face new problems when storing unicode characters in a blob?
i have used nvarchar as my datatype in sql server 2000 now i have decided to change to varchar as i can increase the character length from 4000 to 8000 Do I Lose data if i change the datatype.
I have a table using nvarchar(for what ever reason which beyond me why its a nvarchar...) that I would like to change to a varchar. There is no unicode in the fields so I don't have to worry about but I don't want to lose any text data. Will coverting the data type lose data?
I am converting this table to something that will be multi language compliant. My question is, I know that NVARCHAR's take double the space of a VARCHAR. Do I actually need to double the length of the VAL field to store the same amount of data or does the DB handle that?
Basically I want to store a 128 character NVARCHAR.. do I need to set my table up like this:
I am currently cleaning up my database to get its total size down and am not sure how nvarchar and varchar work exactly.
When defining the length of a varchar or nvarchar in enterprise manager, will that effect the size of the entry (as far as data size) no matter what the length of the entry? In other words, will there be a difference in Data Size for an entry with the length of 4 characters with a definition of varchar(4) versus an entry with the length of 4 characters with a definition of varchar(50).
****If there is no difference, is there any reason in trying to best guess the size to give nvarchar or varchar columns? It would seem easier to just define the lengths of columns which need variable lengths to 200 or 400 just to save time in not trying to best guess what the size might be...*****
I have a table with a Varchar field that will contain encrypted data. Since each byte can have a value from 0 through 255, can I use Varchar or should I change the field to NVarchar? The reason I ask is that during testing, the Varchar field sometimes is truncated, supposed to be 16 bytes but ends up as 5 or 6 or something less than 16.
Hi,I have a pretty straightforward question to do with variable length fields I hope someone can help me with:When using varchar (or nvarchar), is there any point in specifying a smaller length than the maximum? Does it save space or improve performance at all?ThanksRedit: I suppose the max rowsize is an issue. any others?
I have table with a field defined as nvarchar. I want to change it to varchar. I have a stored procedure which defines the parameter @strCall_desc as nvarchar(4000). Are there going to be ay problems with running this sp if I just change the field type as described.
HiThe maximum length of a nvarchar could be 4000 characters while that ofvarchar could be 8000.We are trying to use unicode which would require that the datatype forone our fields be converted from varchar to nvarchar. But looks likethis would result in loss of existing data.Is there a way to do this without loss of data?Many thanks.*** Sent via Developersdex http://www.developersdex.com ***Don't just participate in USENET...get rewarded for it!
Please I know this is fustrating but I really need help with this issue:
I am getting data conversion error when I tried to load data from one SQl table to another SQL table using SSIS.
The source table has a column with data type nvarchar(max). Also the destination table has the same data type nvarchar(max) but I keep getting conversion error when I use SCD transformation.
Error: " Input column "des" (116) has a long object data type of DT_TEXT, DT_NTEXT or DT_IMAGE which is not supported"
I am fine when I use OLEDB destination but I want to do an incremental load.
The transaction_date is datetime and date1 is nvarchar. When I run the script: Insert into payment(transaction_date) Select convert (datetime, date1) from dep01
I get the following message:
Server: Msg 8115, Level 16, State 2, Line 1 Arithmetic overflow error converting expression to data type datetime. The statement has been terminated.
Hi, when I convert a field into smalldatetime from nvarchar(50) in Sql Server 2000, i got a default value (1900-01-01 00:00:00) for that field.Actually value of that field to be changed as different values).I want to be convert bulk of records.please help me.
I have looked at several explinations and I understand the difference between unicode and non-unicode. I get that the basic idea around storage is "double", 2 bytes instead of 1. My question is, does the 2 byte instead of 1 byte rule apply even if I am storing a char that doesn't need the full to bytes. for arguments sake I have a table called "UnicodeTable" and one column called "Letter". If I store the letter "A" on the first row of the "UnicodeTable" does the size of my database increase by 2 bytes?
I have an existing application that relies on a SQL Server database.
I want to switch all varchar fields to nvarchar so it can handle multiple languages.
The database has ~25 tables, many of which have varchar fields. I want to convert them all to nvarchar.
The database has ~150 stored procedures, many of which have varchar fields. I want to convert them all to nvarchar.
Are there any tools out there that would let me convert the tables of my choosing, and the stored procedures of my choosing, so that any 'varchar' mentions are changed to 'nvarchar' ? I've only used SQL Query Analyzer to write queries and use MS Access (and some SQL Enterprise Manager) to make the tables and relationships.
We have few stored procedures that use nvarchar datatype, this was not issue on SQL server 7.0 but in 2000 becomes a big issue. For example query that runs for 3 minutes in SQL server 2000 by replacing NVARCHAR to VARCHAR the same query runs for 2 seconds. The biggest challenge that I have deals with tables and user-defined datatypes of NVARCHAR that has been bounded to the table. How can I alter those without data corruption?
Hi, I'm starting a new application in java using JTDS jdbc driver(http://jtds.sourceforge.net) and SQLServer 2005 Express.I have to design the database from scratch and my doubt is if I have to usevarchar or nvarchar fields to store string data.Any experience about performance issues using nvarchar instead of varchar(considering that Java internally works in unicode too)?Thanks in advance,Davide.
There is a view in a SQL Server database that I need to connect to. If I connect to the database via Management Studio, the column CLIENT_NUMBER is nvarchar(15). Now in SSIS, if I add an OLE DB Source, access using a SQL Command, click Build Query, and add the view, I can see CLIENT_NUMBER as nvarchar(15) there too. Now I click OK, go to Columns, and I see that in both External Column and Output Column, CLIENT_NUMBER is specified as a DT_STR of length 30! The same thing happens if I use Table or view mode, and it happens with every nvarchar column here.
The kicker here is that I know this was working before. When I opened this package for the first time in weeks, I could see the Output Column as DT_WSTR length 15, so I know things were working then. In the meantime, I had installed SP2. Has anyone else heard about an issue like this? It certainly isn't happening with every package. Should I just take the ugly way out and CAST all of these nvarchar columns as nvarchars?
"Important: ntext, text, and image data types will be removed in a future version of Microsoft SQL Server. Avoid using these data types in new development work, and plan to modify applications that currently use them. Use nvarchar(max), varchar(max), and varbinary(max) instead. For more information, see Using Large-Value Data Types."
Considering this warning, is VARCHAR(MAX), NVARCHAR(MAX) and VARBINARY(MAX) support going to be implemented in SQL Server Compact Edition?
One of my clients decided to put letters into their customers' account numbers. They have a numbering scheme where all temporary accounts have a letter in the account OR are numbered greater than 33000, and all permanent accounts are all digits and less than or equal to 33000. all primary accounts have a NumberSuffix of 000.
Now i am tasked with retrieving all primary, non-temp accounts. I cannot simply do WHERE Number <= 33000 because when it gets to an account containing a letter like "00A01", it craps out and says "Conversion failed when converting the nvarchar value '00A01' to data type int."
So decided to run a filtering query first to filter out all accounts with letters, and then from that dataset select all accounts <=33000.
WITH members (FirstName, LastName, Number, NumberSuffix) AS ( SELECT dbo.Entity.FirstName, dbo.Entity.LastName, dbo.Entity.Number, dbo.Entity.NumberSuffix FROM dbo.Entity WHERE NumberSuffix = 000 AND Number NOT LIKE '%A%' AND Number NOT LIKE '%B%' AND Number NOT LIKE '%C%' AND Number NOT LIKE '%D%' AND Number NOT LIKE '%E%' AND Number NOT LIKE '%F%' AND Number NOT LIKE '%G%' AND Number NOT LIKE '%H%' AND Number NOT LIKE '%I%' AND Number NOT LIKE '%J%' ) SELECT * FROM members WHERE Number <= 33000 ORDER BY Number when i do this, i get the same error for some reason. Yet when i execute this at the end instead: SELECT * FROM members WHERE Number LIKE '%A%' ORDER BY Number i get an empty set (meaning it actually does get filtered). but somehow it still able to participate in a range comparison?
Hi Group,I am new with SQL Server..I am working with SQL Server 2000.I am storing the date in a nvarchar column of atable.... Now I want toshow the data of Weekends..Everything is OK...But the problem isarising with Conversion of nvarchar to date...to identify theweekends...Like..Here DATEVALUE is a nvarchar column...But getting theerror..Value of DATEVALUE like dd-mm-yyyy...04-08-2004-----------------------------------------------------------Server: Msg 8115, Level 16, State 2, Line 1Arithmetic overflow error converting expression to data type datetime.---------------------------------------------------------------------------Actual Query-------------------------------Select DATEVALUE,<Other Column Names> from Result whereDatepart(dw,convert(Datetime,DATEVALUE))<>1 andDatepart(dw,convert(Datetime,DATEVALUE))<>7-----------------------------------------------------------Thanks in advance..RegardsArijit Chatterjee
Okay, I have the following store procedure and I kept getting an error.
Code Block ALTER PROCEDURE [dbo].[Search] -- Add the parameters for the stored procedure here @schoolID int = NULL, @scholarship varchar(250) = NULL, @major varchar(250) = NULL, @requirement varchar(250) = NULL, @debug bit = 0 AS BEGIN -- SET NOCOUNT ON added to prevent extra result sets from -- interfering with SELECT statements. SET NOCOUNT ON; -- Insert statements for procedure here Declare @SQL as Varchar(4000); Declare @Params as Varchar(3000); Set @SQL = N'SELECT * FROM [scholarship] WHERE [sectionID] = ' + @schoolID; Set @Params = N'@scholarship VARCHAR(250),@major VARCHAR(250),@requirement VARCHAR(250)' If @scholarship IS NOT NULL Set @SQL = @SQL + N' AND [scholarship].[schlrName] LIKE + ''%'' + @scholarship + ''%''' If @major IS NOT NULL Set @SQL = @SQL + N' AND [scholarship].[Specification] LIKE + ''%'' + @last + ''%''' If @requirement IS NOT NULL Set @SQL = @SQL + N' AND ([scholarship].[reqr1] LIKE + ''%'' + @requirement + ''%''' If @requirement IS NOT NULL Set @SQL = @SQL + N' OR [scholarship].[reqr2] LIKE + ''%'' + @requirement + ''%''' If @requirement IS NOT NULL Set @SQL = @SQL + N' OR [scholarship].[reqr3] LIKE + ''%'' + @requirement + ''%''' If @requirement IS NOT NULL Set @SQL = @SQL + N' OR [scholarship].[reqr4] LIKE + ''%'' + @requirement + ''%''' If @requirement IS NOT NULL Set @SQL = @SQL + N' OR [scholarship].[reqr5] LIKE + ''%'' + @requirement + ''%'')' If @debug = 1 PRINT @SQL Exec sp_executesql @SQL, @Params, @scholarship, @major, @requirement END
And I kept getting this error:
Msg 245, Level 16, State 1, Procedure Search, Line 28
Conversion failed when converting the nvarchar value 'SELECT * FROM [scholarship] WHERE [sectionID] = ' to data type int.
Hi, I have an ASP.NET application that uses VARCHAR extensively in the tables and, more importantly, stored procedures (a couple hundred of them).
This app needs to start accepting foreign language in some areas, so I was wondering if there was some way to go through the tables and, more importantly, the stored procedures and change all "VARCHAR" references to "NVARCHAR" ?
Are the stored procedures stored as a text file somewhere on the server? If so I could use some sort of "replace" software utility to go through and change all VARCHAR to NVARCHAR
