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Optional parameters in CREATE FUNCTION.

Posted on 2004-04-02
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Last Modified: 2007-12-19
why optional parameters can't work on CREATE FUNCTION?

ex.

CREATE FUNCTION dbo.MyFunc
      (@param1       datetime,
      @param2      int = 0)      -- default value is zero.
 .
 .
 .

dbo.MyFunc(getdate())

it prompt an error "An insufficient number of arguments were supplied for the procedure or function dbo.MyFunc."

is there a way to use optional parameters in CREATE FUNCTION?
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Question by:doc_jer
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6 Comments
 
LVL 26

Accepted Solution

by:
Hilaire earned 200 total points
ID: 10739336
User - defined functions don't support optional parameters
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LVL 26

Expert Comment

by:Hilaire
ID: 10739344
Other known limitations are
- you can't use exec() inside a UDF
- you can't use non-deterministic functions (like getdate())
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Author Comment

by:doc_jer
ID: 10739348
so its only stored proc
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LVL 26

Expert Comment

by:Hilaire
ID: 10739361
Yes, only in stored procedures

another limitation of UDFs is that you can't insert/update/delete
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Author Comment

by:doc_jer
ID: 10739362
ok thanks...
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LVL 26

Expert Comment

by:Hilaire
ID: 10739375
>>another limitation of UDFs is that you can't insert/update/delete<<
Actually you can insert/update/delete , but only in #temp tables or tabel @variables
created inside the scope of the function
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