SQL Server and Table-Valued User-Defined Function optimizations

Posted by John Leidegren on Stack Overflow See other posts from Stack Overflow or by John Leidegren
Published on 2010-04-29T07:44:10Z Indexed on 2010/04/29 7:47 UTC
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sql-server-2005

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tsql

If I have an UDF that returns a table, with thousands of rows, but I just want a particular row from that rowset, will SQL Server be able to handle this effciently?

SELECT * FROM dbo.MyTableUDF()
WHERE ID = 1

To what extent is the query optimizer capable of reasoning about this type of query?

How are Table-Valued UDFs different from traidtional views if they take no parameters?

Any gotchas I should know about?

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