Is There A User Defined Row Type Ability In MSSQL Server?
Sep 9, 2004
Hi all. We have a mix of informix and mssql server and I want to know if something we do in informix has an analogous feature in MSSQL. We can define a "row type" in informix, like so:
create row type name_1(fname char(20),lname char(20));
The when we create any table that includes a first and last name, we do so using this row type like so:
create table sometable(name name_1, some column,...etc)
This allows us to set a standard for certain common fields and avoids having different developers build the same type of field in more than one way, different lengths, etc.
I created a user-defined datatype in Microsoft SQL server using the Enterprise Manager. But, I am not able to find options to edit this data type. There are options to delete but not for editing an existing user defined data type.
Can any one help me how to edit this user defined datatype ?
Also, are there any better ways to create and manage user defined data types in MS SQL ?
Implement time interval type in the form of a user defined type in SS2k8r2? Specifically an interval type described in the book Temporal Data and the Relational Model by C. J. Date at all. As an example, an interval is below:
1/4/2006:1/10/2006
which would mean the time period from 1/4 to 1/10.
what are the advantages of using user-defined data types in SQL Server?
for example, you may have Customer Number Cust_Num varchar(10) you can create a user-defined data type like this: udt_CustNum
so now your table creation script for Custome table become: Cust_Num udt_CustNum
however, once the user-defined data type is referred by other tables. it cannot be changed/deleted.
So, i wonder what are the good reason of using udt instead of fundamental data types. (built-in datatypes)
the only good thing i think is about: the abstract naming of the data type. you may have other key fields like Supplier Number which is varchar(12) instead of u have to remember varchar(10) for customer and varchar(12) for supplier u just to remember udt_CustNum for customer and udt_SuppNum for supplier.
A common request for enhancement to applications is to "make thisfield bigger". I know I've been caught with increasing a field size,and then spending hours debugging because another stored proc has avariable or temp table that uses the field defined as the originalvarchar size. SQL Server just truncates to fit the data into thesmaller varchar, and so there are no errors raised.An option suggested by a colleague is to no longer use varchars, butuse User Defined Types instead. To make this work effectively,though, they suggest we would need to make it a rule that we do notuse varchars anywhere except to define user defined types.Though there will be one point of changes I can't help thinking thisisn't a very good idea ! Any thoughts ?Thanks.
I've got a user defined table type called StringDictionaryTVP:
CREATE TYPE [dbo].[StringDictionaryTVP] AS TABLE( [key] [varchar](500) NULL, [value] [varchar](500) NULL )
Ideally I would like to be able to have a # of columns and directions in this table like so:
DECLARE @OrderByClause StringDictionaryTVP
INSERT INTO @OrderByClause([key], [value]) values('gender','desc') INSERT INTO @OrderByClause([key], [value]) values('name','asc')
Since our database can be a bit sizable, I'd also like to use Common Table Expressions so I can page through them fairly easy.So my standard cte is something like this:
DECLARE @PageIndex INT = 0 DECLARE @PageSize INT = 20 ;WITH results_cte AS ( SELECT U.*, ROW_NUMBER() over ( ORDER BY name ) RowNum from Users U) SELECT * FROM results_cte WHERE RowNum > @Offset AND RowNum <= @Offset + @PageSize
So where 'ORDER BY name' is I'd like to use the @OrderByClause in some sort of dynamic way. I've tried all kinds of stuff but even something like this doesn't get the actual column name I need
;WITH results_cte AS ( SELECT U.*, ROW_NUMBER() over ( ORDER BY (select top 1 [key] +' '+ [value] from @OrderByClause) ) RowNum from Users U)
I may be chasing the wrong stick, but outside of dynamic sql, is something like this possible?
Is there a syntax to create indexes on user-defined type's fields and methods? Can I index UDT-fields?
I tried but only get syntax error.
Code Snippet
-- put an index on the picture luminance
CREATE INDEX myIdx ON myTbl(picMetaData.Brightness) -- !! error
GO
Error message:
Code Snippet
Msg 102, Level 15, State 1, Line 1
Incorrect syntax near '.'.
According to books online (BOL), section User-defined types requirements says In the SQL Server 2005 RTM version, CLR UDTs with user-defined serialization were allowed to have their fields indexed as part of non-persisted computed columns or views. In such situations, non-deterministic UDT serialization/deserialization could lead to index corruption, and therefore has been removed from SQL Server 2005 SP1. In SQL Server 2005 SP1, UDT fields must use native serialization or be persisted in order to be indexed. Any existing indexes on UDT fields should continue to function as before.
What are BOL trying to say about index on UDT fields?
I have defined a data type "OC_BUN_NAME" in database "CVPRO". I want to create a table tempdb.dbo.CVPRO in SQL SERVER 2005 system Database tempdb. But SQL SERVER 2005 DBMS gives a Error Messages:"Can not find the data type OC_BUN_NAME".
How can I do? How to use data types in the other database?
Hi GuysWonder if you could help me.Basically I produce an accounts package that uses a SQL 2000 DB as theRDBMS. I always instruct users to login as 'sa' and the relevantpassword when doing an update to my program, as sometimes I need to dodatabase changes for new stuff.Found that one of my users has not only logged in with their loginname (in this case Edward), but have also made this login a 'db owner'so that when I created 2 new user-defined data types they belong toEdward rather than dbo.This must have happened a long time ago, but now that they want tomove Edward round the roles and/or delete him from a copy of thedatabase that they have, they can't because he's the owner of theseuser-defined types.This brings me to the reason for my post, how can I change the ownerfrom Edward to dbo for these data types? I found an article ontechnet of how to do this, but when it suggests changing myuser-defined type to standard format it doesn't seem to work.Any ideas?RgdsRobbie
Im trying to use a .NET IPAddress in my UDT. i create the assembly, but i get this error when i try to create the type in SQL Server:
Type "IPAddress.IPAddressUDTType" is marked for native serialization, but field "address" of type "IPAddress.IPAddressUDTType" is not valid for native serialization.
From what i understand about the IPAddress object in .NET it is serializable. what am i doing wrong
( note, im just doing this for research purposes and not planing to use the UDT)
What is 'COLLATE SQL_Latin1_General_CP1_CI_AS'? I am new to SQLServer, and couldn't find much information on the Web. Also, I am trying to understand user defined data types. For example,
In the following example, what is '[Price_DT]' data type? and how would it be referenced at the time of 'INSERT'.
CREATE TABLE [dbo].[Dist_Orders_Master_Index] ( [SubTotal] [Price_DT] NOT NULL , [Tax] [Price_DT] NOT NULL ) ON [PRIMARY]
I have several stored procedures with parameters that are defined withuser defined data types. The time it takes to run the procedures cantake 10 - 50 seconds depending on the procedure.If I change the parameter data types to the actual data type such asvarchar(10), etc., the stored procedure takes less that a second toreturn records. The user defined types are mostly varchar, but someothers such as int. They are all input type parameters.Any ideas on why the stored procedure would run much faster if notusing user defined types?Using SQL Server 2000.Thanks,DW
Hi all, In my SQL Server Management Studio Express, I have the following Database "ChemAveRpd", Table "dbo.LabTests", and Content of the Table: dbo.LabTests Column_name Type Length Prec Scale AnalyteID int 4 10 0 (Primary Key) AnalyteName nvarch 510 CasNumber nvarch 510 Result numeric 5 8 2 Unit nvarch 510 SampleID int 4 10 0 (Foreign Key)
Hello, I cannot find out to create enum data type in SQL Server 2005 Express. Can I easily create the enum type just like the MySQL does.(please the MySQL example below)
CREATE TABLE myTable ( myid INT UNSIGNED NOT NULL, myclass ENUM('FIRST','SECOND','THIRD') DEFAULT 'FIRST' PRIMARY KEY(myid) );
Hi all. We have a mix of informix and mssql server and I want to knowif something we do in informix has an analogous feature in MSSQL. Wecan define a "row type" in informix, like so:create row type name_1(fname char(20),lname char(20));The when we create any table that includes a first and last name, wedo so using this row type like so:create table sometable(name name_1, some column,...etc)This allows us to set a standard for certain common fields and avoidshaving different developers build the same type of field in more thanone way, different lengths, etc.Is there a similar function in MSSQL server?
I have 3 fields in my table say (F1, F2, F3). I want to get the max value out of the three fields for each row. I can create a user-defined function which accepts 3 arguments and then return the max value if i am using SQL Server 2000. But now i am using only SQL Server 7.0 (it does not support user-defined functions :confused: )
So any one could kindly let me know how could i do it in SQL Server 7.0
Hi all!!Does anybody know how I can create a function in SQL 7.0?? I have tocreate functions that return a value that can be used in a selectstatement. I think SQL Server version 7.0 doesn't support CREATEFUNCTION, does it?Ex:Select MyFunction(Parameter)From MyTableThanks a lot,
Dear all I wants to run sql server user defined function when linked two server.
I have linked two sql server.There is one function called getenc().This function created on first server.What i want.I wants to run this user defined function on the second sql server. can any one help me?
hi,it might be a very stupid question but i want to know whether anexecution plan is created in user defined functions in sql server 2000like stored procedures.Thanks.
This is my problem: I do not know how to get the servername from a C# user defined function . Is this possible?
I am writing a User Defined Function (UDF). Inside of this user defined function I need the name of the databaseserver that it is running on. Does anyone have an idea how I might do this? Is there an enviromental variable that I could access within the C# code I use to write the UDF?
I could always use a parameter to pass in the name of the server, but I would like to have as few parameters as possible.
I have a function that accespts a string and a delimeter returns the results in a temp table. I am using the funtion for one of the columns in my view that needs be to split and display the column into different columns. The view takes for ever to run and finally it doesn't split and doesn't display in the column.
Function: ----------------------------------- ALTER FUNCTION [dbo].[func_Split] ( @DelimitedString varchar(8000),
[Code].....
Not sure what I am missing in the above view why it doesn't split the string.
EXEC master.dbo.xp_msver ProductVersion can be used to return the server version in a resultset. I need this to do some conditional coding between varchar and varchar(max) in a UDF, so size of the text I return must be different between the SQL2000 and SQL2005.
I cant call an xp_ that returns a resultset within a UDF can I, so how can I get the SQL version?
