virtual主题的文章列表，还有virtual的技术要点_第3页

ORA-55333: virtual model string does not exist

文档解释ORA-55333:virtualmodelstringdoesnotexistCause:Thespecifiedvirtualmodelcouldnotbefound.Action:Makesurethatthevirtualmodelhasbeencreated.：ORA-55333:virtualmod...

IT技术学习 ·2023-07-13

ORA-54014: Resulting table from a CTAS operation contains virtual column(s)

文档解释ORA-54014:ResultingtablefromaCTASoperationcontainsvirtualcolumn(s)Cause:TablebeingcreatedbyaCTASoperationcontainsavirtualcolumndefinitionAction:Removethevir...

IT技术学习 ·2023-07-11

ORA-54036: cannot define referential constraint with ON DELETE SET NULL clause on virtual column

文档解释ORA-54036:cannotdefinereferentialconstraintwithONDELETESETNULLclauseonvirtualcolumnCause:AttemptedtospecifyONDELETESETNULLclauseforareferentialintegritycons...

IT技术学习 ·2023-07-11

ORA-55337: a virtual model or rules index with the name string already exists

文档解释ORA-55337:avirtualmodelorrulesindexwiththenamestringalreadyexistsCause:Avirtualmodelorrulesindexwiththespecifiednamewasalreadypresent.Action:Chooseadifferen...

IT技术学习 ·2023-07-10

ORA-54002: only pure functions can be specified in a virtual column expression

文档解释ORA-54002:onlypurefunctionscanbespecifiedinavirtualcolumnexpressionCause:Columnexpressioncontainedafunctionwhoseevaluationisnon-deterministic.Action:Rewrite...

IT技术学习 ·2023-07-10

ORA-39268: Cannot alter a real column to make it virtual or vice versa.

文档解释ORA-39268:Cannotalterarealcolumntomakeitvirtualorviceversa.Cause:DBMS_METADATA_DIFFwascomparingtwotablecolumns,onevirtual,onereal.ThereisnoSQLALTERstatement...

IT技术学习 ·2023-07-10

ORA-54034: virtual columns not allowed in functional index expressions

文档解释ORA-54034:virtualcolumnsnotallowedinfunctionalindexexpressionsCause:Anattemptwasmadetocreateafunctionalindexwithanexpressiondefinedononeormorevirtualcolumns...

IT技术学习 ·2023-07-09

ORA-54032: column to be renamed is used in a virtual column expression

文档解释ORA-54032:columntoberenamedisusedinavirtualcolumnexpressionCause:Attemptedtorenameacolumnthatwasusedinavirtualcolumnexpression.Action:Dropthevirtualcolumnfi...

IT技术学习 ·2023-07-09

ORA-54017: UPDATE operation disallowed on virtual columns

文档解释ORA-54017:UPDATEoperationdisallowedonvirtualcolumnsCause:AttemptedtoupdatevaluesofavirtualcolumnAction:Re-issuethestatmentwithoutsettingvaluesforthevirtualc...

IT技术学习 ·2023-07-09

ORA-54004: resultant data type of virtual column is not supported

文档解释ORA-54004:resultantdatatypeofvirtualcolumnisnotsupportedCause:Thedatatypeoftheunderlyingexpressionisnotsupported.Onlyscalardatatypesaresupportedforvirtualco...

IT技术学习 ·2023-07-08

ORA-54023: Virtual column expression cannot be changed because a constraint is defined on column

文档解释ORA-54023:VirtualcolumnexpressioncannotbechangedbecauseaconstraintisdefinedoncolumnCause:Attemptedtochangetheexpressionofavirtualcolumnthathadaconstraintdef...

IT技术学习 ·2023-07-08

ORA-64139: The type of VIRTUAL column is not XMLTYPE

文档解释ORA-64139:ThetypeofVIRTUALcolumnisnotXMLTYPECause:AnattemptwasmadetocreateanXMLindexwithVIRTUALcolumnnotofXMLTYPE.Action:SpecifythetypeofVIRTUALcolumntobeXM...

IT技术学习 ·2023-07-08

ORA-54019: Virtual column expression cannot be changed because it is a partitioning column

文档解释ORA-54019:VirtualcolumnexpressioncannotbechangedbecauseitisapartitioningcolumnCause:Attemptedtomodifytheexpressionofavirtualcolumnthatwasalsoapartitioningco...

IT技术学习 ·2023-07-08

ORA-54025: Virtual column cannot have a default value

文档解释ORA-54025:VirtualcolumncannothaveadefaultvalueCause:Attemptedtoalteravirtualcolumntohaveadefaultvalue.Action:Thisisnotvalid,changetheDDL.ORA-54025：虚拟列不允许有默认...

IT技术学习 ·2023-07-08

ORA-54001: string: invalid identifier specified for virtual column expression

文档解释ORA-54001:string:invalididentifierspecifiedforvirtualcolumnexpressionCause:Columnexpressionreferencedacolumnthatdoesnotexistinthetable.Action:Rewritecolumne...

IT技术学习 ·2023-07-08