How to declare output in sql 2008

@TotalRows int开发者_运维知识库 = NULL Output

this won't work

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Depends what you're doing with it. You don't need to specify a default value for an output parameter - although your client app might think it needs to supply a value. This will work:

create proc DoSomethingWithRows
    @TotalRows int = null output
as

set @TotalRows = 32 /*You might want to do something more imaginative than this*/