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
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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