--批量删除声明 v_session_sid varchar2(100); v_session_serial varchar2(100); type ref_cursor_type 是引用游标;光标会话 ref_cursor_type;开始打开cursor_session for 'select sid,serial# from v$session where status ''KILLED'' an
--批量删除
声明
v_session_sid varchar2(100);
v_session_serial varchar2(100);
type ref_cursor_type 是引用光标;
光标会话 ref_cursor_type;
开始
打开cursor_session for 'select sid,serial# from v$session where status ''KILLED'' 和 lower(用户名) in (''lbi_sys_mk''') ';
循环
将cursor_session获取到v_session_sid,v_session_serial;
当cursor_session%notFound时退出;
立即执行 'alter system Kill session '''||v_session_sid||','||v_session_serial||'''';
结束循环;
关闭游标会话;
立即执行“删除用户lbi_sys_mk级联”;
结束;
---单个删
选择 s.inst_id,
s.sid,
s.serial#,
p.spid,
s.用户名,
s.程序,
s.paddr,
s.STATUS
来自 gv$session s
将 gv$process p 加入 p.addr = s.paddr 和 p.inst_id = s.inst_id
WHERE s.type != 'BACKGROUND' and s.username='LBI_ODS_MK';
立即更改系统终止会话“217,39645”;
删除用户 lbi_ods_mk 级联;

todropaviewInmySQL,使用“ dropviewifexistsview_name;” andTomodifyAview,使用“ createOrreplaceViewViewViewview_nameAsSelect ...”。whendroppingaview,asew dectivectenciesanduse和showcreateateviewViewview_name;“ tounderStanditSsstructure.whenModifying

mySqlViewScaneFectectialized unizedesignpatternslikeadapter,Decorator,Factory,andObserver.1)adapterPatternadaptSdataForomDifferentTablesIntoAunifiendView.2)decoratorPatternenhancateDataWithCalcalcualdCalcalculenfields.3)fieldfields.3)

查看InMysqlareBeneForsImplifyingComplexqueries,增强安全性,确保dataConsistency,andOptimizingPerformance.1)他们simimplifycomplexqueriesbleiesbyEncapsbyEnculatingThemintoreusableviews.2)viewsEnenenhancesecuritybyControllityByControllingDataAcces.3)

toCreateAsimpleViewInmySQL,USEthecReateaTeviewStatement.1)defitEtheetEtheTeViewWithCreatEaTeviewView_nameas.2)指定usethectstatementTorivedesireddata.3)usethectStatementTorivedesireddata.3)usetheviewlikeatlikeatlikeatlikeatlikeatlikeatable.views.viewssimplplifefifydataaccessandenenanceberity but consisterfort,butconserfort,consoncontorfinft

1)foralocaluser:createUser'localuser'@'@'localhost'Indidendify'securepassword'; 2)foraremoteuser:creationuser's creationuser'Remoteer'Remoteer'Remoteer'Remoteer'Remoteer'Remoteer'Remoteer'Remoteer'Rocaluser'@'localhost'Indidendify'seceledify'Securepassword'; 2)

mysqlviewshavelimitations:1)他们不使用Supportallsqloperations,限制DatamanipulationThroughViewSwithJoinSorsubqueries.2)他们canimpactperformance,尤其是withcomplexcomplexclexeriesorlargedatasets.3)

porthusermanagementInmysqliscialforenhancingsEcurityAndsingsmenting效率databaseoperation.1)usecReateusertoAddusers,指定connectionsourcewith@'localhost'or@'%'。

mysqldoes notimposeahardlimitontriggers,butacticalfactorsdeterminetheireffactective:1)serverConfiguration impactactStriggerGermanagement; 2)复杂的TriggerSincreaseSySystemsystem load; 3)largertablesslowtriggerperfermance; 4)highConconcConcrencerCancancancancanceTigrignecentign; 5); 5)


热AI工具

Undresser.AI Undress
人工智能驱动的应用程序,用于创建逼真的裸体照片

AI Clothes Remover
用于从照片中去除衣服的在线人工智能工具。

Undress AI Tool
免费脱衣服图片

Clothoff.io
AI脱衣机

Video Face Swap
使用我们完全免费的人工智能换脸工具轻松在任何视频中换脸!

热门文章

热工具

适用于 Eclipse 的 SAP NetWeaver 服务器适配器
将Eclipse与SAP NetWeaver应用服务器集成。

PhpStorm Mac 版本
最新(2018.2.1 )专业的PHP集成开发工具

VSCode Windows 64位 下载
微软推出的免费、功能强大的一款IDE编辑器

禅工作室 13.0.1
功能强大的PHP集成开发环境

Dreamweaver CS6
视觉化网页开发工具