Se proteger contra dupe

[possato 1]

E AI GALERA TD BEM HJ VOU ENSINAR A COMO SE PROTEGER CONTRA DUPE

 

E O SEGUINTE GALERA

 

Execute esse código no SQL Query Analizer uma vez na semana por garantia.

Selecione a DB MuOnline

copie e cole o Código:

 

if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[trg_CheckSameID]') and OBJECTPROPERTY(id, N'IsTrigger') = 1) drop trigger [dbo].[trg_CheckSameID] GO if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[AllItemsLog]') and OBJECTPROPERTY(id, N'IsUserTable') = 1) drop table [dbo].[AllItemsLog] GO if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[CopyLog]') and OBJECTPROPERTY(id, N'IsUserTable') = 1) drop table [dbo].[CopyLog] GO CREATE TABLE [dbo].[AllItemsLog] ( [items_id] [int] IDENTITY (1, 1) NOT NULL , [items_type] [binary] (1) NOT NULL , [items_serial] [binary] (4) NOT NULL , [items_acid] [varchar] (10) COLLATE Chinese_PRC_CI_AS NOT NULL ) ON [PRIMARY] GO CREATE TABLE [dbo].[CopyLog] ( [copy_id] [int] IDENTITY (1, 1) NOT NULL , [copy_acid] [varchar] (10) COLLATE Chinese_PRC_CI_AS NOT NULL , [copy_whdata] [binary] (1200) NOT NULL , [copy_date] [datetime] NOT NULL ) ON [PRIMARY] GO ALTER TABLE [dbo].[AllItemsLog] ADD CONSTRAINT [DF_CT_ITEM_item] DEFAULT (0) FOR [items_type], CONSTRAINT [DF_CT_ITEM_itemid] DEFAULT (0) FOR [items_serial], CONSTRAINT [DF_CT_ITEM_itemrole] DEFAULT ('\') FOR [items_acid] GO CREATE INDEX [iX_CT_ITEM] ON [dbo].[AllItemsLog]([items_type], [items_serial]) ON [PRIMARY] GO ALTER TABLE [dbo].[CopyLog] ADD CONSTRAINT [DF_CopyLog_copy_date] DEFAULT (getdate()) FOR [copy_date] GO SET QUOTED_IDENTIFIER ON GO SET ANSI_NULLS ON GO

[mofo 1]

Oque exatamente essa query faz ? ela deleta os items dupadas ou informa Quem tah fazendo esse tipow de bugs ?? Poderia por favor explicar melhor