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Vue3中的readonly怎么使用

在Vue3中，可以通过readonly函数将一个对象转化为只读的，使其属性成为只读的，无法被修改。使用方法如下：import{readonly}from'vue';constmyObject={name:'Alice',age:25};constreadonlyObject=readonly(myObject);//尝...

开发笔记 ·2024-03-10

ORA-64143: Can only share an existing XMLIndex table with an XMLTYPE column.

文档解释ORA-64143:CanonlyshareanexistingXMLIndextablewithanXMLTYPEcolumn.Cause:AnattemptwasmadetoshareatablewithoutanXMLTYPEcolumn.Action:DropthegroupcontainingtheX...

IT技术学习 ·2023-07-28

ORA-25100: TABLESPACE option can only be used with ALTER INDEX REBUILD

文档解释ORA-25100:TABLESPACEoptioncanonlybeusedwithALTERINDEXREBUILDCause:TheTABLESPACEoptiontoALTERINDEXwasusedwithouttheREBUILDoption.Action:UseALTERINDEXREBUILDT...

IT技术学习 ·2023-07-28

ORA-19955: only one open thread is allowed to change the DBID

文档解释ORA-19955:onlyoneopenthreadisallowedtochangetheDBIDCause:Theoperationfailedbecausetherewereactivethreadsinthedatabase.Themostlikelycauseisthatthedatabasecra...

IT技术学习 ·2023-07-28

ORA-25009: Nested table clause allowed only for INSTEAD OF triggers

文档解释ORA-25009:NestedtableclauseallowedonlyforINSTEADOFtriggersCause:TriggersonnestedtablescanonlybecreatedonviewcolumnsusingINSTEADOFtriggers.Action:Useviewnest...

IT技术学习 ·2023-07-28

ORA-14640: add/coalesce index partition operation is valid only for hash partitioned global indexes

文档解释ORA-14640:add/coalesceindexpartitionoperationisvalidonlyforhashpartitionedglobalindexesCause:Userattemptedtoaddorcoalesceanindexpartitionofaglobalindexnotpa...

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-25310: Subscriber is Notification only; dequeue not supported

文档解释ORA-25310:SubscriberisNotificationonly;dequeuenotsupportedCause:Notificationonlysubscribersarenotallowedtodequeue.Action:Recreatesubscriberifnecessary.ORA-2...

IT技术学习 ·2023-07-28

ORA-26724: only SYS is allowed to set the Capture or Apply user to SYS.

文档解释ORA-26724:onlySYSisallowedtosettheCaptureorApplyusertoSYS.Cause:TheCaptureorApplyuserwasspecifiedasSYSbyauserotherthanSYS.Action:SetSYSastheCaptureorApplyus...

IT技术学习 ·2023-07-27

ORA-14703: The AFTER clause can be used to ADD PARTITION only to a System Partitioned table.

文档解释ORA-14703:TheAFTERclausecanbeusedtoADDPARTITIONonlytoaSystemPartitionedtable.Cause:ThetableisnotpartitionedbytheSystemmethodAction:SkiptheAFTERclause.ORA-14...

IT技术学习 ·2023-07-27

ORA-32418: COMMIT SCN keyword only appears in CREATE MATERIALIZED VIEW LOG statement

文档解释ORA-32418:COMMITSCNkeywordonlyappearsinCREATEMATERIALIZEDVIEWLOGstatementCause:AnattemptwasmadetoalteranexistingmaterializedviewlogtohavecommitSCN.Action:No...

IT技术学习 ·2023-07-27

ORA-21522: attempted to use an invalid connection in OCI (object mode only)

文档解释ORA-21522:attemptedtouseaninvalidconnectioninOCI(objectmodeonly)Cause:UserattemptedtouseaninvalidconnectionoraconnectionthathasbeenterminatedinanOCIenvironm...

IT技术学习 ·2023-07-27

ORA-14764: FOR VALUES clause cannot be specified for only one partition

文档解释ORA-14764:FORVALUESclausecannotbespecifiedforonlyonepartitionCause:AnattemptwasmadetospecifytheFORVALUESclauseforonlyoneofthetwopartitionsbeingmerged.Action...

IT技术学习 ·2023-07-26

ORA-14084: you may specify TABLESPACE DEFAULT only for a LOCAL index

文档解释ORA-14084:youmayspecifyTABLESPACEDEFAULTonlyforaLOCALindexCause:UserattemptedtospecifyTABLESPACEDEFAULTforanobjectotherthanaLOCALindex,whichisillegal.Action...

IT技术学习 ·2023-07-26

ORA-64141: Can only have a single XMLType column when a table is shared.

文档解释ORA-64141:CanonlyhaveasingleXMLTypecolumnwhenatableisshared.Cause:Anattemptwasmadetocreateasharedtablewithmorethanonecolumns.Action:Specifyacorrectsharedtab...

IT技术学习 ·2023-07-26