調用創建表

Question

期間UDF我有一個UDF計算基於一定範圍的要在表中值的分數。

的UDF具有在創建表的過程中要應用/調用，這是在那裏我有一個小麻煩。

的UDF不得不使用情況下，當只有方法，所以我不能改變太多之上，但我敢肯定，我剛剛得到的東西有點過創建。

我不知道如果答案是已經在那裏或沒有，但我避風港;噸兩端偶然卻又如此道歉，如果這是已經回答了一些東西。

這裏是首先創建

--Create UDF 
create function [dbo].[cupidscoreUDF] 
(
    @gender char(1), 
    @name varchar(15), 
    @dob datetime, 
    @weight int, 
    @height int, 
    @smoker bit, 
    @salary int 
) 
returns int 
as 
begin 
    declare @score int 

    -- To determine age in years 
    declare @Age int 
    select @Age = DATEDIFF(YEAR, @dob, GETDATE()) 

    select 
     @score = case 
        when @Age between 20 and 30 then 5 
        when @Age between 31 and 40 then 4 
        when @Age between 41 and 50 then 3 
        when @Age > 50 then 2 
        else 0 
       end 

    -- To determine the height/weight ratio 
    declare @WeightHeight int 

    set @WeightHeight = @weight/@height 

    set 
     @score = @score + 
        case 
         when @WeightHeight between 20 and 25 then 1 
         when @WeightHeight between 25 and 30 then 3 
         when @WeightHeight between 30 and 35 then 4 
         when @WeightHeight between 35 and 40 then 2 
         else 0 
        end 

    -- If non-smoker add 2 points 
    if @smoker = 0 
     set @Score = @Score + 2 

    -- To determine score by salary 
    set 
     @score = @score + 
        case 
         when @salary < 50000 then 1 
         when @salary between 500001 and 60000 then 2 
         when @salary between 60001 and 70000 then 3 
         when @salary > 70000 then 4 
        end 

    return @score 
end 
; 

的UDF現在，這裏就是我得到了創建表的進程

-- Create Member_Profile table 
create table Member_Profile 
(
MemberID int primary key, 
Gender varchar(6), 
Name varchar(50), 
Dob datetime, 
Weight int, 
Height int, 
Smoker bit, 
Salary int, 
Cupid as dbo.cupidscoreUDF 
) 
GO 

insert into Member_Profile (Gender, Name, Dob, Weight, Height, Smoker, Salary) values ('Male','James',19931115, 75, 180, 0, 80000); 
insert into Member_Profile (Gender, Name, Dob, Weight, Height, Smoker, Salary) values ('Female','Rosie',19870912, 45, 150, 0, 100000); 
insert into Member_Profile (Gender, Name, Dob, Weight, Height, Smoker, Salary) values ('Male','Richard',19630402, 95, 168, 1, 200000); 

select * from Member_Profile 

的UDF需要會員的信息，然後計算他們的「丘比特'的分數，然後將其與其他所有內容一起插入表中。

使用UDF將是巨大的任何幫助

Answer 1

嘗試使用此丘比特列：

Cupid as dbo.cupidscoreUDF(Gender, Name, Dob, Weight, Height, Smoker, Salary) 

Answer 2

我會很認真地建議UDF的調用移動到插入/更新的，而不是桌定義。爲了使這更容易，您可以創建一個調用UDF的插入/更新的簡單過程。這樣你可以避免必須提供兩次數據。

這裏是一個很普通的例子，在這個例子中，它看起來有點怪做所有東西這麼簡單的額外的步驟，但是當你實際的應用場景，迅速改變。

use demo 
go 

create table dbo.example_table (
id int identity(1,1) primary key, 
some_value_1 int, 
some_value_2 int, 
some_calculation int) 

go 

create function dbo.calculator_function (
@value1 int, 
@value2 int) 
returns int 
as 
begin 
declare @result int = (select @value1 + @value2 as result) 
return @result 
end 

go 

create procedure dbo.insert_example 
    @value1 int, 
    @value2 int 
as 
insert dbo.example_table (some_value_1,some_value_2,some_calculation) 
select @value1, @value2, dbo.calculator_function(@value1,@value2) 

go 

exec dbo.insert_example 1,2 

go 

select * from example_table 

Answer 3

我假設你在VUW，而我假設你像我一樣做341。 使用觸發器來打電話給你的UDF -I've給你足夠的上手就可以了，你將需要申報和設置任何變量，你認爲有必要爲它工作

CREATE TRIGGER [dbo].[CalculateCupid] 
ON [dbo].[Member_Profile] 
AFTER INSERT 
AS 
BEGIN 




UPDATE DBO.Member_Profile 
SET Cupid_Score = @Cupid_Score WHERE MemberID=@MemberID 

END