How to Execute Sql UDF function

I want to convert nvarchar to ascii value, So I want to create udf function, but i don't know to execute the function.

please anyone know, give me the solutions

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asked Oct 25, 2009 at 10:52 AM in Default

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A scalar function is basically an expression. You use it in a query just as you would a column name, variable, or formula. Obviously you have to pass parameters to it in the query.

select colA, colB, @amt, colA+colB, dbo.ufNvarcharToAscii(colC)

Although this is outside the scope of your question, a scalar function should not be confused with a table-valued function. A scalar function produces a single result value, while a table-valued function can produce a set of rows and is used either like a table, or in conjunction with APPLY. Inline table-valued functions are treated much like views by the optimizer and can produce performance benefits over scalar functions when applied to a large number of rows.

select * from dbo.tfnListOpenOrdersForCustomerNo(custno)

select c.custNo,c.custname,t.orderno from dbo.Customers c cross apply dbo.tfnListOpenOrdersForCustomerNo(custno) as t

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answered Oct 25, 2009 at 11:09 AM

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Bob Hovious
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Say you have created that UDF - then you would call it with

SELECT schema.functionname(parameter)

So you might say

SELECT @asciiValue = dbo.ConvertToAscii(@nvarcharValue)

However, in this case, you would be well advised to use the ASC built in function.

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answered Oct 25, 2009 at 11:08 AM

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Matt Whitfield ♦♦
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asked: Oct 25, 2009 at 10:52 AM

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