0

该程序是创建一个包计数的。员工根据组织的位置休假的数量。例如:- 如果 XYZ 公司是一家位于许多地点的公司。每个地点都有自己的一套规则……在某些地点,周六工作,而在某些地点,周六和周日都被视为假期。我制作了如下包装,但我认为它可以变得更容易。

Create or replace package Body
Leave_location
Procedure Leave_location_proc(Person_id number,
                              Start_date Date
                              )
as 
k Number;
count_weekend number;

Cursor c_var
is 
select pt.person_id,
lt.end_date-lt.start_date Number_of_leaves_excluding_the_end_date,
lt.Start_date      //Start leave date,
lt.Saturday      // 1 if saturday is not working, null if working 
lt.Sunday          ,
loc.location_id
from person_table pt,
leave_table lt
and leave_table.person_id=person_table.person_id
and loc.location_id=pt.person_id \\filtering the location for the particular employee;
Begin

Count_weekend :=0;
       for cursor_var in c_var
       k :=cursor_var.Number_of_leaves_excluding_the_end_date+1
       loop
         for i in..k
         loop
          if(to_char(cursor_var.start_date,'DY') in ('Sat','Sun')
          Then
          if(cursor_var.Saturday is not null and cursor_var.sunday is not null))
          Then
          Count_weekend :=2;
          Else
          count_weekend :=1;
          end if ;
          end if;
       cursor_var.Start_date :=cursor_var.Start_date+1;
No_of_leaves :=K-Count_weekends;
Count_weekends:=Count_weekends+1;
end loop;
end loop;

End Leave_location;
Leave_location_proc;

这段代码似乎效率不高。还有更好的方法

4

1 回答 1

0

为此,您不需要 PL/SQL。这就是我的建议 - 这只是可以转换为游标的查询。您可以计算查询中所需的所有内容。然后,如有必要,您可以在光标中使用它:

-- calculate values from inner/main query
SELECT all_needed_columns_from_inner_query
    , (Number_of_leaves_excluding_the_end_date - nbr_of_wkends) whatever_count
  FROM
 ( -- your main query --
  SELECT ...
       , lt.end_date-lt.start_date Number_of_leaves_excluding_the_end_date
       , (CASE WHEN lt.Saturday IS NOT NULL AND lt.Sunday IS NOT NULL THEN 2 ELSE 1) nbr_of_wkends
    ...
 WHERE...
 )

如果您需要更多帮助,请发布示例数据。但是上面的例子应该给你明确的方向和想法——使用 CASE 来计算你需要的所有值。仅在 PL/SQL 中计算那些绝对无法在 SQL 中计算的值...

于 2013-02-26T18:11:56.030 回答