存储过程小例子

插入记录并返回主键

ALTER PROCEDURE [dbo].[PrcAddMessage]
 (  
    @nQueueID int,@sPatientID varchar(30),@sPatientName varchar(200),@sStudyID varchar(30), 
    @sAppointmentCode varchar(30),@sAppointmentDr varchar(30),@sAppointmentDrID varchar(30), 
    @dtAppointmentTime DateTime,@sRoomName varchar(30),@nState int,@nMessageID int output,@nOrder int output 
 )
 AS 
 begin 
    declare @nStartNum int 
    declare @nStep int 
    declare @nCurrentOrder int 
    select @nStartNum=StartNum,@nStep=Step from B_QueueTable where ID=@nQueueID 
    if @nStartNum is NULL 
        return 
    if @nStartNum is NULL 
        return 
    select @nCurrentOrder=ISNULL(MAX([Order]),0) from B_MessageTable where QueueID=@nQueueID 
     if (@nCurrentOrder <=0)  
        begin 
            set @nCurrentOrder = @nStartNum 
        end 
    else 
        begin 
            set @nCurrentOrder = @nCurrentOrder+@nStep 
        end 
    begin 
       insert into B_MessageTable(QueueID,PatientID,PatientName,StudyID,AppointmentCode,AppointmentDr,AppointmentDrID,AppointmentTime,RoomName,[State],[Order])        values(@nQueueID,@sPatientID,@sPatientName,@sStudyID,@sAppointmentCode,@sAppointmentDr,@sAppointmentDrID,@dtAppointmentTime,@sRoomName,@nState,@nCurrentOrder) 
    end 
        select @nMessageID=SCOPE_IDENTITY() 
        select @nOrder=[Order] from B_MessageTable where ID=@nMessageID 
  end

更新记录与事务

create PROCEDURE [dbo].[ProcMove]
(
    @nMessageID int,@nMoveFlag int ,@nMoveCount int
)
AS
BEGIN
    declare @destOrder int
    declare @sourceOrder int
    declare @currentMessageID int
    declare @currentOrder int
    declare @nStep int
    declare @nQueueID int

    select @sourceOrder=[Order],@nQueueID=QueueID from B_MessageTable where ID=@nMessageID
    if @nQueueID is null
        return
    if @sourceOrder is null
        return
    select @nStep=Step from B_QueueTable where ID=@nQueueID
    if @nStep is null
        return
    if(@nMoveFlag=0)
        begin
        begin transaction
            set @destOrder=@sourceOrder-@nMoveCount
            declare Select_cursor cursor for select ID,[Order] from B_MessageTable where ([Order]>=@destOrder) and ([Order]<@sourceOrder) Order by [Order] asc
            Open Select_cursor
                FETCH NEXT FROM Select_cursor INTO @currentMessageID,@currentOrder
                WHILE @@FETCH_STATUS=0
                begin
                    update B_MessageTable set [Order]=@currentOrder+@nStep where ID=@currentMessageID
                    FETCH NEXT FROM Select_cursor INTO @currentMessageID,@currentOrder
                end
            close Select_cursor
            DEALLOCATE Select_cursor
            update B_MessageTable set [Order]=@destOrder where ID=@nMessageID
        commit transaction
        end
    else
        begin
        begin transaction
            set @destOrder=@sourceOrder+@nMoveCount
            declare Select_cursor cursor for select ID,[Order] from B_MessageTable where ([Order]<=@destOrder) and ([Order]>@sourceOrder) Order by [Order] asc
            Open Select_cursor
                FETCH NEXT FROM Select_cursor INTO @currentMessageID,@currentOrder
                WHILE @@FETCH_STATUS=0
                begin
                    update B_MessageTable set [Order]=@currentOrder-@nStep where ID=@currentMessageID
                    FETCH NEXT FROM Select_cursor INTO @currentMessageID,@currentOrder
                end
            close Select_cursor
            DEALLOCATE Select_cursor
            update B_MessageTable set [Order]=@destOrder where ID=@nMessageID
        commit transaction
        end
END