Why Are CLR User-defined-types Case-sensitive?
Aug 24, 2006
Hi,
I'm wondering, why CLR user-defined-types are case-sensitive in T-SQL?
When I create an udt with vb.net, e.g. udtPoint with properties X and Y and a method ToString(), I have to write udtPoint.X ..., udtPoint.x would raise an error. udtPoint.tostring() isn't working, too.
I like vb, because you don't have to remember whether syntax is upper or lower case. Same is with T-SQL, there's no difference between select * from table and Select * FROM Table. Intellisense would by great, but is not yet implemented .
I'd like to put this topic under suggestions (in my opinon it's a bug), what do you think about it?
Many thanks for your answers!
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Jan 16, 2008
I've been doing some reading on UDT's and have a question...
It was suggested in one of the pieces I read that you could create a UDT for, in their example, cities. And every table that had a reference to city could share this datatype. Now, my initial thought was "wow, what a great idea! I wouldn't have to remember the exact datatype for my primary keys (was it a char(5) or char(6)?) and have a "central depository" for my key datatypes.
So the first question is; what are the disadvantages of such a design?
And the second is; How do you update a UDT? If business requirements change and udt_city needs to be changed from varchar(30) to varchar(60), for example, what would be the way of echoing the change thoughout your database?
My gut reaction for the answers are
1) performance will decrease as effectively the dbms has to "parse" every insert/update to a UDT field in a different method.
2) create a new udt and alter any tables referencing the old one before dropping it.
What do we think?
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Sep 8, 2005
Iam trying to create a geo-database.
For that i need to have a spatial data type called polygon which takes in values as int. so it can be declared as:
POLYGON(0 0, 100 0, 100 100, 0 100, 0 0)
How do i do that.
plz help.
---
Iam not real any more
Iam just an Illusion
---
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Apr 13, 2006
Hi!
I have a question about creating a user defined type: I'd like to create a table of employee objects which include objects of the type employee_t. I used this structure before in Oracle 9i and would like to know how it can be done with MS SQL Server 2000 or 2005, preferably with Enteprise Manager/Management Studio. Below is an example.
CREATE TYPE employee_t AS OBJECT (
name VARCHAR(10)
jobDesc VARCHAR(15)
...
)
CREATE TABLE Employee of employee_t
Regards,
Timo
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Oct 9, 2007
I have a UserDefinedType that is Decimal(21,6)
The fields fltValorPendente e fltTotal are of this type. Field intSinal is an Integer.
I execute the following query:
SELECT
(intSinal * fltValorPendente) / fltTotal as Coef,
cast((intSinal * fltValorPendente) as decimal(21,6)) / fltTotal as CoefCast
into tmp
FROM tbl
Where fltTotal<>0
As a result, table tmp is created with the following structure:
CREATE TABLE [dbo].[tmp](
[Coef] [decimal](38, 6) NULL,
[CoefCast] [decimal](38, 17) NULL
) ON [PRIMARY]
How come both fields don't get the same precision?
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Jun 14, 2007
I have a very simple SQL Server 2005 database, nothing fancy except that I use user-defined types (e.g., udt_Name = varchar(20)). I just set up a login for my first user, using Windows authentication, and gave her the following database access:
default schema = dbo
role = db_datareader
role = db_datawriter
Using SQL Server Management Studio, she can open any table; however, every column that is defined with a user-defined type appears with generic column headings (Expr1, Expr2 etc). And when she opens a table in design view, all columns with user-defined types have their Data Type field listed as "invalid type" rather than, say "udt_Name:varchar(20)". I browsed to the "User-defined Data Types" entry in Object Explorer, and it was empty.
In other words, it appears that she is unable to access the user-defined type aliases, even though she has read/write access to the database. As a very temporary work-around, I gave her membership in the database role "db_owner", but this is obviously not an ideal solution.
User-defined types are a great organizing tool and I don't want to have to redefine all my tables without them. What are my options?
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Nov 14, 2006
Hi there
Can we have user defined data types in SSIS???
Thanks and Regards
Rahul Kumar
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Aug 24, 2000
Is there a way to change the physical mapping of a user defined data type to the physical SQL Server datatype. It seems that once you create them, it is just about impossible to change it.
Thanks,
Andrew Abrams
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Oct 30, 2003
This is part of the codes of a stored procedure:
-- Create tables variables
DECLARE @_tab_PRNumList TABLE(
PRNum udt_PRNum
)
However, it cannot be compiled coz of this error:
Error 2715: Column or parameter #1: Cannot find data type udt_PRNum.
This user-defined data type is created in a user database only.
I tried to created the user-defined type into BOTH tempdb and master but same error.
How can i resolove it?
Or it is impossible to use user-defined datatype for table variable?
In the past,
i use this method:
CREATE TABLE #PRNumList (
PRNum udt_PRNum
)
and cerate udt_PRNum in tempdb only could solve it.
But now i want to use table variable.
It seems NOT work for my situation.
Any idea?
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Jul 23, 2005
How can you tell which datatypes in a given database are user defined(with a query, not by looking in Enterprise Manager)? This is for SQLServer 2000.
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Jul 8, 2006
Hi all,I defined unsigned_int in my database, which uses unsigned_int_rangerule. The unsigned_int_range rule is defined as follows:@unsigned_int >=0 and @unsigned_int <=4294967295(4294967295 = 0xFFFFFFFF)The storage size is 4 bytes.One of the tables in the database contains a field that is of typeunsigned_int.When I try to add a new record into the table (ex: using the EnterpriseManager), it always fails in the unsigned_int field if I enter a valuegreater than 2147483647 (which is 0x7FFFFFFF) all the way to 4294967295(0xFFFFFFFF). The Enterprise Manager shows the following message:"The value you entered is not consistent with the data type orlength of the column, or over grid buffer limit."What is wrong here? The 4-byte storage should be good for any valuefrom 0 to 4294967295.Any help is appreciated.Thanks,Ken
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Dec 24, 2006
Hi!
I'm need to use typed Dataset with CLR UDT, but when I'm trying to create TableAdapter in Dataset designer, I'm gettng error message: User-defined data types are not supported in DataSet designer
Is any way to get it working?
My UDT defined in separate assembly as:
[Serializable]
[XmlRoot(Namespace = NS)]
[StructLayout(LayoutKind.Sequential)]
[SqlUserDefinedType(Format.Native, Name = DataType, IsByteOrdered = true, ValidationMethodName = "Validate")]
public struct Coordinate
: INullable,
IXmlSerializable
{
.....
}
Working environment: Visual Studio 2005 SP1, MS SQL 2005 SP1 + Hotfix.
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Mar 4, 2008
I have somw tables like Product, Sales, Customer.
I used UDTs like ProductCode = nvarchar(30)
CustomerCode= nvarchar(15)
How can I modify my UDTs ?Is there any quick way for that ?
****
Thanks.
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Mar 13, 2001
I have defined a user defined data type. When I try to create a stored procedure specifying the column and user define data tpye I receive message
Server: Msg 2715, Level 16, State 3, Procedure spStoredproc, Line 0
Column or parameter #1: Cannot find data type udtcol1.
Server: Msg 2715, Level 16, State 1, Procedure spStoredproc, Line 0
Column or parameter #2: Cannot find data type udtcol2.
Server: Msg 2715, Level 16, State 1, Procedure spStoredproc, Line 0
Column or parameter #3: Cannot find data type udtcol3
Can you have user defined data types in stored procedures.
Store Procedure creation text
CREATE PROCEDURE spStoredproc
@col1 udtcol1,
@col2 udtcol2,
@col3 udtcol3
AS
INSERT INTO tblTempEmployee
(col1 , col2 , Col3)
VALUES (@col1 , @col2, @col3)
GO
SET QUOTED_IDENTIFIER OFF SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER OFF SET ANSI_NULLS OFF
GO
Dave
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Jan 11, 2006
Hello is there a way to change the owner of a user defined data type in sql2000? If so help is appreciated
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May 10, 2006
Hello,
Does anybody know an easy way to change User Defined Data Types ownership to “dbo”, without dropping dependent objects?
I know that there is a st. proc sp_changeobject owner, but it does not deal with this particular db objects. Is there a similar st.procedure or script that would do the same operation?
Thank you
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May 14, 2008
We have a database that originally had all objects owned by a vendor id. We are in the process of changing the ownership to 'dbo' and wish to remove the vendor id but have found there are a few user defined datatypes that are also owned by this vendor id. How can I change the ownership of them to 'dbo'? They are currently being used in some of the tables. I tried the sp_changeobjectowner but that doesn't work for these.
thanks for any advice!
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Jun 10, 2006
Why is there a limit of 8000 bytes on CLR Extension user defined types in SQl Server 2005?
We now have varchar(max), varbinary(max) and XML data types that are unlimited in size, byt UDT's are limited to 8000 bytes!.
This limitation is ruining a key project of mine!
Any ideas that MS may lift this limit?
Regards
Derek
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Nov 27, 2015
I have a table RequestUtility with 3 columns Vendor, name, system. I want to call this table from BizTalk so that I send multiple vendors and will get corresponding Vendor, name and system for that. As I need to send multiple vendors at the same time I have created a User-Defined Table type VendorNames with a single column Names. and have written a SP :
ALTER PROCEDURE [dbo].[GetName]
 -- Add the parameters for the stored procedure here
 @vendorN VendorNames ReadOnly
AS
 -- SET NOCOUNT ON added to prevent extra result sets from
 -- interfering with SELECT statements.
 SET NOCOUNT ON;
   -- Select statements for procedure here
 SELECT * from dbo.RequestUtility where Vendor IN (SELECT Names from @vendorN)
This is working fine when the value for vendor is present in the table. But if the value is not present it is not returning any thing. But, my requirement is that for example vendor is Dummy which is not present in the table so it should return
Vendor  Name System
Dummy NULL  NULL
But currently it is not returning anything.
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Jun 5, 2015
I have a requirement of creating nested tables in SQL server. how to create them. Just to give a background I am trying to move the RDBMS from oracle to SQL server.
Structure of tables is as follows. I have table 'Employees' with address as one of the column. I have one more table with columns Street, Town, Dist, State. When I query the table 'Employees' I should see the attribute name and values of all the columns in address table in address column.
Employees: with columns: ID, FirstName, LastName, dept, gender, dob, address
Address (Nested table): with columns : Street, Town, Dist, State
This was done in oracle using Nested tables and user defined data types. what is alternative for this in SQL server. How can I achive this requirement in SQL server.
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Nov 4, 2015
Change structure of a User Defined Table Types
     field
([idConteudo] [int]
NULL)     to    Â
 ([idConteudo] [BigInt]
NULL)
Or really should drop and create again?
CREATE TYPE [dbo].[tbProjeto] AS TABLE(
[dsConteudo] [varchar](64) NOT NULL,
[idConteudo] [int] NULL,
[dtConteudo] [datetime] NULL DEFAULT (getdate())
)
GO
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Aug 25, 2014
T-SQL script for the following request ?
Generate script for view dependencies of user defined table types ?
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Aug 31, 2015
How can I change my T-SQL text editor from text sensitive to text insensitive?
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May 4, 2007
Can someone point me to a tutorial on how to search against a SQL Server 2000 using a case insensitive search when SQL Server 2000 is a case sensitive installation?
thanks in advance.
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Aug 17, 2005
We need to install CI database on CS server, and there are some issueswith stored procedures.Database works and have CI collation (Polish_CI_AS). Server hascoresponding CS collation (Polish_CS_AS). Most queries and proceduresworks but some does not :-(We have table Customer which contains field CustomerID.Query "SELECT CUSTOMERID FROM CUSTOMER" works OK regardless ofcharacter case (we have table Customer not CUSTOMER)Following TSQL generate error message that must declare variable @id(in lowercase)DECLARE @ID INT (here @ID in uppercase)SELECT @id=CustomerID FROM Customer WHERE .... (here @id in lowercase)I know @ID is not equal to @id in CS, but database is CI and tablenames Customer and CUSTOMER both works. This does not work forvariables.I suppose it is tempdb collation problem (CS like a server collationis). I tried a property "Identifier Case Sensitivity" for myconnection, but it is read only and have value 8 (Mixed) by default -this is OK I think.DO I MISS SOMETHING ????
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May 29, 2008
I am working in a SQL server database that is configured to be case-insensetive but I would like to override that for a specific query. How can I make my query case-sensitive with respect to comparison operations?
Jacob
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Aug 19, 2007
I am curious with using replication in sql server 2005 one way from db A (source) replicating to db B(destination) in which db A has a collation of CS and db B has a collation of CI. Will there be any problems with this scenario? Thanks in advance!
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Jul 20, 2005
Yesterday I received a response to my CI/CS Collation problem and therecommendation was to try and restore a CI Collation database to a CSCollation database. After creating a blank CS database a full restore(Force restore over existing database) does change the Collation toCI. I'm unsure as to how I can restore without changing theCollation. Any suggestions?
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Mar 21, 2004
Dear everyone,
I am doing Login webform (C# .NET web application) with SQL Server 2000.
The staff table is to store authenticated user info.
But when I test it, I found that the password can be case insensitive, i.e. 'A0001' should be correct password, but 'a0001' can allow login.
Could anyone tell me how to solve this problem??
Thanks you very much!!
private void btnLogin_Click(object sender, System.EventArgs e)
{
//instantiate SQL connection
SqlConnection sqlConnect = new SqlConnection(connectStg);
SqlCommand selectLogin = sqlConnect.CreateCommand();
selectLogin.CommandText = "SELECT sid, type from STAFF Where sid= '" + txtId.Text + "' and pwd= '" + txtPwd.Text + "' ";
//open connectin for execution
sqlConnect.Open();
//instantiate the SqlDataReader reader
SqlDataReader loginReader = selectLogin.ExecuteReader();
//try and catch SqlException error
try
{
if(loginReader.Read())
{
// check whether the user is the role of administrator or operator
// I use GetValue(1) i.e. type field from the above select statement // if "O' then go operator page, else go to administrator page.
if (loginReader.GetValue(1).ToString().ToUpper().Equals("O"))
{
Server.Transfer("//SMS/LoginUser/SuccessLoginOper.aspx");
}
else if (loginReader.GetValue(1).ToString().ToUpper().Equals("A"))
{
Server.Transfer("//SMS/LoginUser/SuccessLoginAdmin.aspx");
}
}
else
{
//clear content of textbox and display error message
txtId.Text="";
txtPwd.Text="";
lblLoginFail.Visible = true;
lblLoginFail.Text="Login Failed!<br>" + "Ensure that ID and Password are correct!";
}
}
catch (SqlException se)
{
if (se.Number == 17)
{
lblLoginFail.Visible = true;
lblLoginFail.Text = "Could not connect to the database";
}
else
{
lblLoginFail.Visible = true;
lblLoginFail.Text = se.Message;
}
}
//close SqlDataReader and SqlConnection
loginReader.Close();
sqlConnect.Close();
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Jul 6, 2005
Hi
how can i use the sensive case in a select field from table where fild='GhhY' ?
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Aug 15, 2002
are SQL Server 7 table names, column names case sensitive?
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Feb 13, 2001
In SQL Server 7.0, how do you SELECT a column which has values beginning with only lower case letters
can anyone advise?
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Feb 15, 2001
Hi,
I want to change my database character set and I use database SQL Server 6.5.
At the first time I install database, I use charset type to case sensitive.
Now, I want to change this charset from case sensitive to un case sensitive.
I hope somebody want to trasnfer knowledge about it.
Thanks for attention.
Regards,
Susan
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