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常要用到的SQL脚本
--说明：此SQL脚本专为删除复制装备而写
--思路：将所有玩家仓库/身上/包袱中的装备全部放入一个临时表，再从临时表中查询MAKEINDEX重复的装备并遂个删除
-- 删除的记录记在日志文件TBL__DELLOG中。
--日期：2003/04/29
--修正日期：2003/05/20
--改进了算法，只列出makeindex相同且装备代码相同的物品。
--改动处：LTRIM(STR([FLD_MAKEINDEX]))+LTRIM(STR([FLD_INDEX])) AS FLD_TID 数据挖掘工具
USE muddb
GO
---建立临时表
if exists (select * from dbo.sysobjects where id = object_id(N"[dbo].[TBL_ALLITEM]") and OBJECTPROPERTY(id, N"IsUserTable") = 1)
drop table [dbo].[TBL_ALLITEM]
GO
CREATE TABLE [dbo].[TBL_ALLITEM] (
[FLD_CHARACTER] [char] (15) COLLATE Chinese_PRC_CI_AS NOT NULL ,
[FLD_TYPE] [tinyint] NULL ,
[FLD_MAKEINDEX] [int] NOT NULL ,
[FLD_TID] [varchar] (30) NOT NULL ,
[FLD_INDEX] [int] NOT NULL ,
[Name] [varchar] (30) COLLATE Chinese_PRC_CI_AS NULL,
[Place] [varchar] (10) COLLATE Chinese_PRC_CI_AS NULL
) ON [PRIMARY]
GO
--从玩家身上/包袱获取数据
INSERT INTO [muddb].[dbo].[TBL_ALLITEM]([FLD_CHARACTER], [FLD_TYPE], [FLD_MAKEINDEX],[FLD_TID],[FLD_INDEX],[Name],[Place])
SELECT [FLD_CHARACTER], [FLD_TYPE], [FLD_MAKEINDEX], LTRIM(STR([FLD_MAKEINDEX]))+LTRIM(STR([FLD_INDEX])) AS FLD_TID,[FLD_INDEX],[Name],"身上" AS Place
FROM [muddb].[dbo].[TBL_ITEM],[muddb].[dbo].[StdItems]
WHERE [FLD_INDEX]-1=[Idx]
GO
--从仓库获取数据 数据挖掘交友
INSERT INTO [muddb].[dbo].[TBL_ALLITEM]([FLD_CHARACTER], [FLD_TYPE], [FLD_MAKEINDEX],[FLD_TID],[FLD_INDEX],[Name],[Place])
SELECT [FLD_CHARACTER], [FLD_TYPE], [FLD_MAKEINDEX], LTRIM(STR([FLD_MAKEINDEX]))+LTRIM(STR([FLD_INDEX])) AS FLD_TID,[FLD_INDEX],[Name],"仓库" AS Place
FROM [muddb].[dbo].[TBL_SAVEDITEM],[muddb].[dbo].[StdItems]
WHERE [FLD_INDEX]-1=[Idx]
GO
--记录将要删除的复制装备
if not exists (select * from dbo.sysobjects where id = object_id(N"[muddb].[dbo].[TBL__DELLOG]") and OBJECTPROPERTY(id, N"IsUserTable") = 1)
CREATE TABLE [muddb].[dbo].[TBL__DELLOG] (
[删除日期] datetime not null,
[FLD_MAKEINDEX] [int] NOT NULL ,
[角色名] [char] (15) COLLATE Chinese_PRC_CI_AS NOT NULL ,
[装备代码] [int] NULL ,
[装备名称] [varchar] (30) COLLATE Chinese_PRC_CI_AS NULL,
[存放地点] [varchar] (10) COLLATE Chinese_PRC_CI_AS NULL
) ON [PRIMARY]
GO
INSERT INTO [muddb].[dbo].[TBL__DELLOG]([删除日期],[FLD_MAKEINDEX],[装备代码],[装备名称],[角色名],[存放地点]) 数据挖掘研究院
SELECT getdate() as 删除日期,[FLD_MAKEINDEX] , [FLD_INDEX]-1 AS 装备代码,[Name] AS 装备名称,[FLD_CHARACTER] AS 角色名, [Place] AS 存放地点
FROM [muddb].[dbo].[TBL_ALLITEM]
WHERE ((([FLD_TID]) In
(SELECT [FLD_TID] FROM [TBL_ALLITEM] As Tmp GROUP BY [FLD_TID] HAVING Count([FLD_TID])>1 )))
ORDER BY [FLD_MAKEINDEX]
GO
--遂个删除复制装备
DECLARE @T_ID char (30),@I_MAKEINDEX int , @V_Place varchar (10)
DECLARE D_ITEMS_cursor CURSOR FOR
SELECT [FLD_TID],[FLD_MAKEINDEX],[Place]
FROM [muddb].[dbo].[TBL_ALLITEM]
WHERE ((([FLD_TID]) In
(SELECT [FLD_TID] FROM [TBL_ALLITEM] As Tmp GROUP BY [FLD_TID]
HAVING Count([FLD_TID])>1 )))
ORDER BY [FLD_MAKEINDEX]
OPEN D_ITEMS_cursor
FETCH NEXT FROM D_ITEMS_cursor INTO @T_ID,@I_MAKEINDEX,@V_Place
WHILE @@FETCH_STATUS = 0
BEGIN
BEGIN
IF @V_Place = "仓库"
DELETE FROM [muddb].[dbo].[TBL_SAVEDITEM] WHERE [FLD_MAKEINDEX] = @I_MAKEINDEX 数据挖掘论坛
ELSE
DELETE FROM [muddb].[dbo].[TBL_ITEM] WHERE [FLD_MAKEINDEX] = @I_MAKEINDEX
END
FETCH NEXT FROM D_ITEMS_cursor INTO @T_ID,@I_MAKEINDEX,@V_Place
END
CLOSE D_ITEMS_cursor
DEALLOCATE D_ITEMS_cursor
GO
if exists (select * from dbo.sysobjects where id = object_id(N"[dbo].[TBL_ALLITEM]") and OBJECTPROPERTY(id, N"IsUserTable") = 1)
drop table [dbo].[TBL_ALLITEM]
GO
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