train主题的文章列表，还有train的技术要点_第7页

ORA-25954: missing primary key or unique constraint on dimension

文档解释ORA-25954:missingprimarykeyoruniqueconstraintondimensionCause:Anattempttocreateajoinindexwasmade,whichfailedbecauseoneormoredimensionsdidnothaveanappropriat...

IT技术学习 ·2023-07-08

ORA-02448: constraint does not exist

文档解释ORA-02448:constraintdoesnotexistCause:ThenamedconstraintdoesnotexistAction:StoptryingtodosomethingwithanonexistantconstraintORA-02448表示指定的约束不存在。Oracle数据库报错O...

IT技术学习 ·2023-07-08

ORA-23344: constraint (string.string) does not exist

文档解释ORA-23344:constraint(string.string)doesnotexistCause:Anull,misspelledornonexistentconstraintwasspecifiedwhenregisteringauniquenessconflict.Action:Registeran...

IT技术学习 ·2023-07-08

ORA-02250: missing or invalid constraint name

文档解释ORA-02250:missingorinvalidconstraintnameCause:Theconstraintnameismissingorinvalid.Action:Specifyavalididentifiernamefortheconstraintname.ORA-02250:missingor...

IT技术学习 ·2023-07-08

ORA-02272: constrained column cannot be of LONG datatype

文档解释ORA-02272:constrainedcolumncannotbeofLONGdatatypeCause:Self-evident.Action:Changethedatatypeofthecolumn,orremovetheconstraintonthecolumn.。ORA-02272是Oracle数据...

IT技术学习 ·2023-07-08

ORA-02293: cannot validate (string.string) – check constraint violated

文档解释ORA-02293:cannotvalidate(string.string)–checkconstraintviolatedCause:analtertableoperationtriedtovalidateacheckconstrainttoapopulatedtablethathadnocom...

IT技术学习 ·2023-07-08

ORA-02338: missing or invalid column constraint specification

文档解释ORA-02338:missingorinvalidcolumnconstraintspecificationCause:Acolumnconstraintwasnotspecified.Action:Removethecolumnspecificationorspecifyacolumnconstraint....

IT技术学习 ·2023-07-08

ORA-02275: such a referential constraint already exists in the table

文档解释ORA-02275:suchareferentialconstraintalreadyexistsinthetableCause:Self-evident.Action:Removetheextraconstraint.ORA-02275错误显示在您尝试为现有表定义另一个具有同样名称的外部键约束时。Oracle...

IT技术学习 ·2023-07-08

ORA-04094: table string.string is constraining, trigger may not modify it

文档解释ORA-04094:tablestring.stringisconstraining,triggermaynotmodifyitCause:Atriggerattemptedtomodifyatablethatwasconstrainingforsomereferentialconstraintofaparen...

IT技术学习 ·2023-07-08

ORA-02444: Cannot resolve referenced object in referential constraints

文档解释ORA-02444:CannotresolvereferencedobjectinreferentialconstraintsCause:attemptedtodefineforeignkeyreferencinganobjectwhichcannotberesolvedtoabasetablereferenc...

IT技术学习 ·2023-07-06

ORA-40104: invalid training data for model build

文档解释ORA-40104:invalidtrainingdataformodelbuildCause:Thetrainingdataprovidedinthereportedtableisunsuitableforbuild,eitherbecauseitisempty,hasunsuitabledata,orthe...

IT技术学习 ·2023-07-06

ORA-02440: Create as select with referential constraints not allowed

文档解释ORA-02440:CreateasselectwithreferentialconstraintsnotallowedCause:createtablefoo(…ref.con.…)asselect…;Action:Createthetableasselect,thenal...

IT技术学习 ·2023-07-05

ORA-01981: CASCADE CONSTRAINTS must be specified to perform this revoke

文档解释ORA-01981:CASCADECONSTRAINTSmustbespecifiedtoperformthisrevokeCause:Duringthisrevokesomeforeignkeycontraintswillberemoved.Inordertoperformthisautomatically,...

IT技术学习 ·2023-07-05

ORA-02446: CREATE TABLE … AS SELECT failed – check constraint violated

文档解释ORA-02446:CREATETABLE…ASSELECTfailed–checkconstraintviolatedCause:AnattemptwasmadetouseaCREATETABLE…ASSELECTstatementwhensomerowsviolatedo...

IT技术学习 ·2023-07-05

ORA-02447: cannot defer a constraint that is not deferrable

文档解释ORA-02447:cannotdeferaconstraintthatisnotdeferrableCause:AnattemptwasmadetodeferanondeferrableconstraintAction:Droptheconstraintandcreateanewonethatisdeferr...

IT技术学习 ·2023-07-05