1.表恢复,如果在删除表的同时删除的数据,那么表恢复也能恢复当时删除时的数据 -----查询删除的表 select * from recyclebin order by droptime desc ---恢复删除的表 flashback table tablename to before job 2.表数据恢复对误删的表记录,只要没有 TRUNCATE 语句,就可以根据事务的提交时间进行选择恢复,一般步骤有:1.先从 FLASHBACK_TRANSACTION_QUERY 视图里查询,视图提供了
Steps To Recover A Dropped Tablespace Using TSPITR (Doc ID 1277795.1) APPLIES TO: Oracle Database - Enterprise Edition - Version 11.2.0.1 and laterInformation in this document applies to any platform.*** Checked for relevance on 16-NOV-2015 *** PURPO
update tMeter set 字段= t.源自段 from ( select * from 源表信息 ) t where 关联条件 实际demo: UPDATE dbo.WX_TWODIMENCODE_INFO SET wti_scan_views=t.count FROM ( SELECT COUNT(*) AS 'count',lci_erector_scene_id FROM LOTTERY_CODE_INFO AND lci_erector_code_scantime IS NOT
查看log-bin是否开启:mysql> show variables like '%log%bin%';+---------------------------------+-------+| Variable_name | Value |+---------------------------------+-------+| log_bin | ON || log_bin_trust_function_
use master go if exists (select name from sysobjects where name = 'sp_generate_insert_script') begin drop proc sp_generate_insert_script print 'old version of sp_generate_insert_script dropped' end go create procedure sp_generate_insert_script @table
正确写法2):UPDATE A SET A.mobilephone = b.mobile FROM tb_contact A,tmp_contact b WHERE A.contact_name = b.name 正确写法1):UPDATE tb_contact SET tb_contact.mobilephone = b.mobile FROM tmp_contact b WHERE tb_contact.contact_name = b.name 个人认为正确写法2比较简洁. 可以看出,表
摘要: 在sqlserver维护中,我们偶尔需要运行一些sql脚本对数据进行相关修改操作,在数据修改前我们必须对表数据进行备份来避免出现异常时,可以快速修复数据, 下文讲述sqlserver维护中,快速备份表和表还原的方法,如下所示: 实验环境:sql server 2008 R2 ---例:快速备份表 saleDetail ---使用select into 可以快速创建表并将表数据同时插入新建表中 select * into [saleDetail_20181012] from [saleDe
--删除数据库表数据 慎用 create PROCEDURE sp_DeleteAllData AS ) ) ) ) ) ) begin try begin tran -- 失效索引,触发器 open tb fetch next from tb into @tblName begin set @sNOCHECKCONSTRAINT ='ALTER TABLE ' + @tblName+ ' nocheck CONSTRAINT ALL' set @sDISABLETRIGGER ='ALTER
drop table area CREATE TABLE [dbo].[Area] ( , ) NOT NULL , ) COLLATE Chinese_PRC_CI_AS NOT NULL , ) ON [PRIMARY] GO ALTER TABLE [dbo].[Area] ADD CONSTRAINT [PK_aa] PRIMARY KEY CLUSTERED ( [AreaID] ) ON [PRIMARY] GO SET IDENTITY_INSERT Area ON GO INSE
和朋友一起学习,速度就是快.感谢珍惜少年时. 网上很多都在长篇大论MSSQL显错手工注入,其实原理只有一小段.如下: ' and (查询一段内容)=1 and 'C'='Cnvarchar类型(查询一段内容的返回) 会自动转换int类型 ,肯定会转换失败.然后报错将nvarchar类型(查询一段内容的返回) 的值显示出来. 由这个原理衍生出单字段查询.如下: ' and 0=(SELECT top 1 username FROM table) and 'C'='C 然后有衍生出多字段查询.如下: