Sql Server 游标例子笔记

create PROCEDURE total_mySaleDuty
as
BEGIN
	 DECLARE @a int,@error int    
   DECLARE @b int,@errorb int    
	 DECLARE @c_dutyId int;
	 DECLARE @c_dutyName VARCHAR(100);
	 DECLARE @c_proxyCount int;
	 DECLARE @c_saleCount int;
	 DECLARE @c_buyCount int;
	 DECLARE @c_count int;
	 DECLARE @c_userId int;

	 set @b=1;
   set @errorb=0;
	 set @a=1;
   set @error=0;

   DECLARE findManager_cur CURSOR for 
			SELECT userId FROM QPNewLobbyDB.dbo.qzmajiang_duty WHERE dutyLevel = 1
			
			OPEN findManager_cur FETCH next from findManager_cur into @c_userId;
					while @@FETCH_STATUS = 0 
							begin     
									DECLARE findSaleDuty_cur CURSOR for 
										 SELECT
												d.dutyId,
												MAX (d.dutyName) AS dutyName,
												COUNT (DISTINCT u.userId) AS proxyCount,
												SUM (CASE WHEN l.typeId = 1 THEN l.roomCardCount ELSE 0 END) saleCount,
												SUM (CASE WHEN l.typeId = 2 THEN c.currentPrice ELSE 0 END) buyCount
										 FROM QPNewLobbyDB.dbo.qzmajiang_duty d
										 LEFT JOIN QPNewLobbyDB.dbo.qzmajiang_proxy_user u ON d.dutyId = u.dutyId
										 LEFT JOIN QPNewLobbyDB.dbo.qzmajiang_proxy_log l ON u.userId = l.fromUserId
										 AND DATEDIFF(MONTH,l.createTime,GETDATE()) = 0
										 LEFT JOIN QPNewLobbyDB.dbo.qzmajiang_roomcard_config c ON l.configId = c.configId
										 WHERE parentDutyId = (SELECT dutyId FROM QPNewLobbyDB.dbo.qzmajiang_duty WHERE userId =@c_userId AND dutyLevel = 1)
										 GROUP BY d.dutyId 

										 OPEN findSaleDuty_cur FETCH next from findSaleDuty_cur into @c_dutyId,@c_dutyName,@c_proxyCount,@c_saleCount,@c_buyCount;
											 while @@FETCH_STATUS = 0 
													begin       

														select @c_count = count(1) from QPNewLobbyDB.dbo.qzmajiang_history_total where dutyId = @c_dutyId and DATEDIFF(MONTH, createTime, GETDATE())= 0  ;
														
														if(@c_count=0)  
															begin 
																insert into QPNewLobbyDB.dbo.qzmajiang_history_total values(@c_dutyId,@c_dutyName,@c_proxyCount,@c_saleCount,@c_buyCount,GETDATE())
															end
														else  
															begin  
																	update QPNewLobbyDB.dbo.qzmajiang_history_total set proxyCount=@c_proxyCount,saleCount=@c_saleCount,buyCount=@c_buyCount,createTime=GETDATE()
																	where dutyId=@c_dutyId and DATEDIFF(MONTH, createTime, GETDATE())= 0
															end  
														
														set @a=@a+1
														set @error= @error + @@ERROR 
														fetch next from findSaleDuty_cur into @c_dutyId,@c_dutyName,@c_proxyCount,@c_saleCount,@c_buyCount

													end
											close findSaleDuty_cur  
										deallocate findSaleDuty_cur

									set @b=@b+1
									set @errorb= @errorb + @@ERROR 
									fetch next from findManager_cur into  @c_userId
							end
			close findManager_cur  
	deallocate findManager_cur
END