日期:2014-05-18  浏览次数:20596 次

继续请教高手关于函数中使用游标的问题
CREATE   FUNCTION   get_names   (@id   int)
RETURNS   TABLE
AS
RETURN  
(
        SELECT   GivenName,FamilyName   from   Patients   where   PatientNum=@id
);
GO
select   *   from   dbo.get_names(9)

这是取出PatientNum=9的记录,里面有N条满足要求
现在想加一个参数   取出前5条,

不能用TOP,只能用游标做,大家请帮我改改,要交作业了,多谢多谢


------解决方案--------------------
CREATE FUNCTION get_names (@id int)
RETURNS @return TABLE (GivenName ?类型, FamilyName ?类型)
AS

begin

declare @GivenName ?类型, @FamilyName ?类型
declare @i int
set @i = 0

declare curTest cursor for SELECT GivenName,FamilyName from Patients where PatientNum=@id
open curTest
fetch next from curTest into @GivenName, @FamilyName
while @@fetch_status = 0
begin
insert @return select @GivenName, @FamilyName
fetch next from curTest into @GivenName, @FamilyName
set @i = @i + 1
if @i = 5 break
end
close curTest
deallocate curTest

RETURN

end

GO