COMBINE主题的文章列表，还有COMBINE的技术要点_第2页

ORA-23633: Cannot turn off combined capture and apply mode in apply-state checkpoint mode (value “string”, string parameter string)

文档解释ORA-23633:Cannotturnoffcombinedcaptureandapplymodeinapply-statecheckpointmode(value“string”,stringparameterstring)Cause:Thecapturewasrunninginap...

IT技术学习 ·2023-07-09

ORA-25190: an index-organized table maintenance operation may not be combined with other operations

文档解释ORA-25190:anindex-organizedtablemaintenanceoperationmaynotbecombinedwithotheroperationsCause:ALTERTABLEstatementattemptedtocombineanindex-organizedtablemain...

IT技术学习 ·2023-07-09

ORA-26901: string propagation sender in the combined capture and apply mode is to be suspended while apply is disabled.

文档解释ORA-26901:stringpropagationsenderinthecombinedcaptureandapplymodeistobesuspendedwhileapplyisdisabled.Cause:Thecorrespondingsubscriberwasdroppedorsplit.Actio...

IT技术学习 ·2023-07-08

ORA-14048: a partition maintenance operation may not be combined with other operations

文档解释ORA-14048:apartitionmaintenanceoperationmaynotbecombinedwithotheroperationsCause:ALTERTABLEorALTERINDEXstatementattemptedtocombineapartitionmaintenanceopera...

IT技术学习 ·2023-07-08

ORA-23290: This operation may not be combined with any other operation

文档解释ORA-23290:ThisoperationmaynotbecombinedwithanyotheroperationCause:ALTERTABLERENAMECOLUMN/CONSTRAINToperationwasgiveninconjunctionwithanotherALTERTBALEOperat...

IT技术学习 ·2023-07-08

ORA-29872: parameters clause cannot be combined with the specified options

文档解释ORA-29872:parametersclausecannotbecombinedwiththespecifiedoptionsCause:TheusercombinedPARAMETERSclausewithotheralterindexoptions.Action:Reissuethestatementw...

IT技术学习 ·2023-07-08

ORA-14121: MODIFY DEFAULT ATTRIBUTES may not be combined with other operations

文档解释ORA-14121:MODIFYDEFAULTATTRIBUTESmaynotbecombinedwithotheroperationsCause:ALTERTABLEorALTERINDEXstatementattemptedtocombineMODIFYDEFAULTATTRIBUTESwithsomeot...

IT技术学习 ·2023-07-08

ORA-14103: LOGGING/NOLOGGING may not be combined with RECOVERABLE/UNRECOVERABLE

文档解释ORA-14103:LOGGING/NOLOGGINGmaynotbecombinedwithRECOVERABLE/UNRECOVERABLECause:Astatementcontainedboth[NO]LOGGINGand[UN]RECOVERABLEclauseswhichisdisallowed.A...

IT技术学习 ·2023-07-06

MySQL Error number: 4014; Symbol: ER_CANT_COMBINE_ANONYMOUS_TO_GTID_AND_AUTOPOSITION; SQLSTATE: HY000

文档解释Errornumber:4014;Symbol:ER_CANT_COMBINE_ANONYMOUS_TO_GTID_AND_AUTOPOSITION;SQLSTATE:HY000Message:TheoptionsASSIGN_GTIDS_TO_ANONYMOUS_TRANSACTIONS=LOCAL|andS...

IT技术学习 ·2023-07-03

C# Path.Combine 并不那么智能

Path.Combine的两个参数，均不允许为null，另外，只要其中一个参数为零长度字符串，就直接返回另一个参数。string s1 = Path.Combine("D:", "cftea.txt"); // D:cf...

代码星球 ·2023-04-16

MapReduce中combine、partition、shuffle的作用是什么

概括：combine和partition都是函数。中间的步骤应该仅仅有shuffle！1.combinecombine分为map端和reduce端，作用是把同一个key的键值对合并在一起，能够自己定义的。combine函数把一个map函数产生的<key,value>对（多个key,value）合并成一个新的...

代码星球 ·2021-02-18

PHP连接和拆分数组array_combine()和array_slice()用法示例

一提起数组，可能很多PHP初学者会觉得难，但开发一些高级应用的时候，又离不开数组的使用。下面就来说下，PHP使用array_combine()函数来连接数组、用array_slice()函数来拆分数组。一、连接数组arrayarray_combine(arraykeys,arrayvalues)本函数会返回一个新数组，...

代码星球 ·2021-01-09

hadoop中，combine、partition、shuffle作用分别是什么？

combine和partition都是函数，中间的步骤应该只有shuffle！combine分为map端和reduce端，作用是把同一个key的键值对合并在一起，可以自定义的。combine函数把一个map函数产生的<key,value>对（多个key,value）合并成一个新的<key2,value...

代码星球 ·2020-04-14

MR案例：CombineFileInputFormat

CombineFileInputFormat是一个抽象类。Hadoop提供了两个实现类CombineTextInputFormat和CombineSequenceFileInputFormat。此案例让我明白了三点：详见解读：MR多路径输入和解读：CombineFileInputFormat类对于单一输入路径情况：//...

代码星球 ·2020-03-30

解读：CombineFileInputFormat类

MR-Job默认的输入格式FileInputFormat为每一个小文件生成一个切片。CombineFileInputFormat通过将多个“小文件”合并为一个"切片"（在形成切片的过程中也考虑同一节点、同一机架的数据本地性），让每一个Mapper任务可以处理更多的数据，从而提高MR任务的执行速度...

代码星球 ·2020-03-30