Question

我需要创建一个系统，该过程使用过程和游标来计算给定类型的工作（见陈述）的员工薪水，但是当执行游标时，它将继续加载，而当取消游标时，它将更新表并设置所有值与存储过程中的第一个if语句相同

create procedure salaryproc @booking_type varchar(50), @staff_type varchar(50), @salary int = 0
as 
begin 

if(@booking_type='personal' and @staff_type='booking')
  begin 
    set @salary = 1500+2300
  end

if(@booking_type='personal' and @staff_type='catering')
 begin 
    set @salary = 1500+1900
  end

if(@booking_type='official' and @staff_type='booking')
  begin 
    set @salary = 1800+2300
  end

  if(@booking_type='official' and @staff_type='catering')
 begin 
    set @salary = 1800+1900
  end

update staff
  set salary=@salary

 end

declare @booking_type varchar(50)
declare @staff_type varchar(50)
declare @salary int

declare salary_cursor cursor

for select b.type, s.type, s.salary
 from booking as b, staff as s

 open salary_cursor
     fetch next from salary_cursor
     into @booking_type, @staff_type, @salary

     while(@@fetch_status=0)
              begin 

               exec salaryproc @booking_type , @staff_type, @salary

             end
close salary_cursor

Answer 1

salaryproc中的更新语句正在更新人员表中的每条记录。添加where语句以将其简化为您要更新的记录。

update staff
    set salary=@salary
where
    bookingType = @booking_type
    and staffType = @staff_type

可以将游标和存储过程简化为设置基于更新的语句。基于集合的操作优于游标。

-- set the salary for personal + booking
update staff
    set salary= 1500+2300
where
    bookingType = 'personal'
    and staffType = 'booking'

-- set the salary for personal + catering
update staff
    set salary= 1500+1900
where
    bookingType = 'personal'
    and staffType = 'catering'

-- set the salary for official + booking
update staff
    set salary= 1800+2300
where
    bookingType = 'official'
    and staffType = 'booking'

-- set the salary for official + catering
update staff
    set salary= 1800+1900
where
    bookingType = 'official'
    and staffType = 'catering'

Answer 2

我认为您可以只用一条语句进行更新

update staff
set    salary = 
         case when bookingType = 'personal' and staffType = 'booking' then 1500+2300
              when bookingType = 'personal' and staffType = 'catering' then 1500+1900
              when bookingType = 'official' and staffType = 'booking' then 1800+2300
              when bookingType = 'official' and staffType = 'catering' then 1800+1900
              else salary
         end
where  bookingType in ('personal', 'official')
and    stafftype in ('booking', 'catering')

单击取消时查询继续执行，然后说受影响的行

2 个答案: