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User Defined Data Types versus User Defined Types


User Defined Data Types versus User Defined Types

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kanejeeves
kanejeeves
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In SS Mgmt Studio under Database>Programmability>Types... there are two User-defined type options: Data types and Types. Everything I found by googling talked about UDTs and CLR integration. What's the difference between these two options. I don't want to do CLR integration, but I DO want to be able to define a column once, then use it in different tables, so that I know the definition is the same in all tables.
peterhe
peterhe
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User defined data type is called alias type in sql 2005, and is based on a native sql data type, e.g. Name as varchar(100);

User defined type (UDT) means the data type created based on a .net assembly.

So you can use CREATE TYPE to add the alias types you want and use them in your tables.



amit_adarsh
amit_adarsh
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Hi ,
Good article to check

http://technet.microsoft.com/en-us/library/ms178069(v=sql.105).aspx
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