[SQL SERVER系列]存储过程,游标和触发器实例[原创]
2016-05-13 10:20
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自己写的存储过程与游标结合使用的实例,与大家分享,也供自己查阅,仅供参考:
触发器实例:插入数据时,触发器获取这条数据ID,自动修改,比程序处理更方便。
Create trigger tg_url_update on [dbo].UrlTotal for insert as
declare @getid int;
declare @url varchar(128);
set @getid=(select id from inserted);
set @url='Test.aspx?id='+cast(@getid as varchar(50))
update UrlTotal set url=@url where id=@getid
谢谢阅读~~
--使用游标循环处理,删除重复的记录 declare @UserID int declare @UserName varchar(32) declare @RealName varchar(32) declare @UnitFlag int declare @Email2 varchar(64) declare @Mobile varchar(64) declare @Start int declare @End int declare @Type varchar(16) declare @IsSubscribe bit declare curEmailTotalLib cursor for (select UserID,UserName,RealName,UnitFlag,Email,Mobile,IsSubscribe from Task_IntermediateData) open curEmailTotalLib --打开游标 fetch next from curEmailTotalLib into @UserID, @UserName, @RealName, @UnitFlag, @Email2, @Mobile, @IsSubscribe while @@fetch_status = 0 --获取成功 begin --在邮件系统总库中不存在此用户ID,不存在此邮箱,并且用户订阅过 if not exists(select * from Task_EmailTotalLib where UserID = @UserID) and not exists(select * from Task_EmailTotalLib where Email = @Email2) and @IsSubscribe = 1 begin set @Start = charindex('@', @Email2, 0) set @End = charindex('.', @Email2, @Start) if @Start != 0 and @End != 0 begin --不是垃圾邮件 if @Email2 is not null and ltrim(rtrim(@Email2)) <> '' begin if not exists(select * from Task_JunkEmail where Email = @Email2) begin begin try set @Type = substring(@Email2, @Start + 1, @End - @Start - 1) if @Type != 'qq' and @Type!='126' and @Type != '163' and @Type!='sina' and @Type !='sohu' and @Type != 'gmail' and @Type!='hotmail' and @Type != 'yahoo' and @Type != '139' and @Type != '263' and @Type !='yeah' and @Type != 'cnki' begin set @Type = 'extra' end insert into Task_EmailTotalLib(UserID, UserName, RealName, Email, Mobile, Priority, MailType, LibType, FpIsSend, CpIsSend, UpIsSend, VpIsSend, WpIsSend, XpIsSend, YpIsSend, ZpIsSend, SendCount, SucCount, FailCount, CreditRate, IsJunkEmail, IsSubscribe, IsUsed, Memo) values(@UserID, @UserName, @RealName, @Email2, @Mobile, 2, @Type, @UnitFlag, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 10, 0, @IsSubscribe, 0, '') end try begin catch print '@Email2:'+@Email2+'charindex(''@'', @Email2, 0)'+charindex('@', @Email2, 0)+' @Start'+@Start+' @End'+@End+' @End - @Start - 1:'+@End - @Start - 1 end catch end end end end fetch next from curEmailTotalLib into @UserID, @UserName, @RealName, @UnitFlag, @Email2, @Mobile, @IsSubscribe end close curEmailTotalLib --关闭游标 deallocate curEmailTotalLib --释放游标
触发器实例:插入数据时,触发器获取这条数据ID,自动修改,比程序处理更方便。
Create trigger tg_url_update on [dbo].UrlTotal for insert as
declare @getid int;
declare @url varchar(128);
set @getid=(select id from inserted);
set @url='Test.aspx?id='+cast(@getid as varchar(50))
update UrlTotal set url=@url where id=@getid
谢谢阅读~~
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