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C++ 中using 与 typedef

using关键字在C++中由来已久，使用得也比较多，现代C++进一步扩展了其应用范围，目前using可以用在以下场景中：命名空间声明命名空间成员声明类成员声明类继承构造类型别名与模板别名其中的4，5是现代C++对using关键字应用范围的扩展，5是用来替代typedef的。代码示例：#include#inc...

开发笔记 ·2024-08-27

java.sql.SQLException: Access denied for user root@172.16.2.20 (using password: YES)

启动spring架构连接数据库时，报错：java.sql.SQLException:Accessdeniedforuser'root'@'172.16.2.20'(usingpassword:YES)解决：1.在架构连接数据库的位置增加&zeroDateTimeBehavior=...

开发笔记 ·2024-08-08

ORA-26940: OCIPOGGCapture API must be executed using a dedicated server process.

文档解释ORA-26940:OCIPOGGCaptureAPImustbeexecutedusingadedicatedserverprocess.Cause:AnattemptwasmadetoexecuteOCIPOGGCaptureAPIusingasharedserverprocess.Action:Repla...

IT技术学习 ·2023-07-28

ORA-19768: USING clause only valid with ENABLE CHANGE TRACKING

文档解释ORA-19768:USINGclauseonlyvalidwithENABLECHANGETRACKINGCause:TheUSINGclausewasspecifiedwithDISABLECHANGETRACKINGAction:Correctthestatement.ORA-19768：USING子句仅...

IT技术学习 ·2023-07-28

ORA-26924: cannot configure string using “string”.”string” queue because it is used by “string” for string purpose

文档解释ORA-26924:cannotconfigurestringusing“string”.”string”queuebecauseitisusedby“string”forstringpurposeCause:Anattemptwasmad...

IT技术学习 ·2023-07-28

ORA-12351: cannot create view using a remote object which has a remote object reference

文档解释ORA-12351:cannotcreateviewusingaremoteobjectwhichhasaremoteobjectreferenceCause:Youtriedtocreateaviewwhichreferencesaremoteobjectwhich,inturn,referencesanob...

IT技术学习 ·2023-07-26

ORA-31112: fail to string for string port using xdb configuration

文档解释ORA-31112:failtostringforstringportusingxdbconfigurationCause:portnumberforthedefinedpresentationisnotvalidAction:Eithertheportnumberisalreadyinuseoritispro...

IT技术学习 ·2023-07-26

ORA-25154: column part of USING clause cannot have qualifier

文档解释ORA-25154:columnpartofUSINGclausecannothavequalifierCause:Columnsthatareusedforanamed-join(eitheraNATURALjoinorajoinwithaUSINGclause)cannothaveanexplicitqua...

IT技术学习 ·2023-07-26

ORA-23389: obsolete procedure; drop objects and recreate using new master

文档解释ORA-23389:obsoleteprocedure;dropobjectsandrecreateusingnewmasterCause:dbms_repcat.switch_mview_masterisnolongersupported.Action:Droptheobjectsintheobjectgro...

IT技术学习 ·2023-07-26

ORA-26040: Data block was loaded using the NOLOGGING option

文档解释ORA-26040:DatablockwasloadedusingtheNOLOGGINGoptionCause:Tryingtoaccessdatainblockthatwasloadedwithout*redogenerationusingtheNOLOGGING/UNRECOVERABLEoptionAc...

IT技术学习 ·2023-07-26

ORA-29814: expecting USING or DEFAULT keyword

文档解释ORA-29814:expectingUSINGorDEFAULTkeywordCause:ExpectingtheUSINGorDEFAULTkeywordafterthenamesofobject(s).Action:ProvidetheUSINGorDEFAULTkeyword.ORA-29814：错误是...

IT技术学习 ·2023-07-26

ORA-25212: invalid PRIORITY specified when using sequence deviation

文档解释ORA-25212:invalidPRIORITYspecifiedwhenusingsequencedeviationCause:ThePRIORITYspecifiedintheenqueueislessthanthepriorityofthemessagewiththegivenrelativemessa...

IT技术学习 ·2023-07-26

ORA-31164: cannot load object-relational XML attribute using direct path

文档解释ORA-31164:cannotloadobject-relationalXMLattributeusingdirectpathCause:Thetablebeingloadedcontainsaxmlcolumnwithobject-relationalstorage.Thexmltypecolumncont...

IT技术学习 ·2023-07-25

ORA-31170: Cyclic Schema Registration without using FORCE option

文档解释ORA-31170:CyclicSchemaRegistrationwithoutusingFORCEoptionCause:AnattemptwasmadetoregistercyclicschemaswithFORCE=false.Action:UseFORCE=truewhenregisteringcyc...

IT技术学习 ·2023-07-23

ORA-29655: USING clause is incompatible with its supertype

文档解释ORA-29655:USINGclauseisincompatiblewithitssupertypeCause:TheUSINGclauseofatypehastobethesameasitssupertypeorcompatiblewithit.Action:MakesuretheUSINGclauseis...

IT技术学习 ·2023-07-23