2015 年 1月 25 日随笔档案 - JackyKen

2015年1月25日

摘要： Group By SyntaxSimple ExamplesSelect statement and group by clauseAdvanced FeaturesMulti-Group-By InsertsMap-side Aggregation for Group ByGrouping Set... 阅读全文

posted @ 2015-01-25 19:56 JackyKen 阅读(329) 评论(0) 推荐(0)

[Hive - LanguageManual] Select base use

摘要： Select SyntaxWHERE ClauseALL and DISTINCT ClausesPartition Based QueriesHAVING ClauseLIMIT ClauseREGEX Column SpecificationMore Select SyntaxGROUP BYS... 阅读全文

posted @ 2015-01-25 19:49 JackyKen 阅读(429) 评论(0) 推荐(0)

[Hive - LanguageManual] Import/Export

摘要： LanguageManual ImportExportSkip to end of metadataAdded byCarl Steinbach, last edited byLefty Leverenzon May 14, 2013(view change)show commentGo to st... 阅读全文

posted @ 2015-01-25 14:54 JackyKen 阅读(373) 评论(0) 推荐(0)

[Hive - LanguageManual] DML: Load, Insert, Update, Delete

摘要： LanguageManual DMLHive Data Manipulation LanguageHive Data Manipulation LanguageLoading files into tablesSyntaxSynopsisNotesInserting data into Hive T... 阅读全文

posted @ 2015-01-25 12:41 JackyKen 阅读(1257) 评论(0) 推荐(0)

[Hive - LanguageManual] Archiving for File Count Reduction

摘要： Archiving for File Count ReductionNote: Archiving should be considered an advanced command due to the caveats involved.Archiving for File Count Reduct... 阅读全文

posted @ 2015-01-25 12:13 JackyKen 阅读(311) 评论(0) 推荐(0)

[Hive - LanguageManual] Statistics in Hive

摘要： Statistics in HiveStatistics in HiveMotivationScopeTable and Partition StatisticsColumn StatisticsTop K StatisticsImplementationUsageConfiguration Var... 阅读全文

posted @ 2015-01-25 11:38 JackyKen 阅读(473) 评论(0) 推荐(0)

[Hive - LanguageManual] Hive Default Authorization - Legacy Mode

摘要： DisclaimerPrerequisitesUsers, Groups, and RolesNames of Users and RolesCreating/Dropping/Using RolesCreate/Drop RoleGrant/Revoke RolesViewing Granted ... 阅读全文

posted @ 2015-01-25 10:22 JackyKen 阅读(356) 评论(0) 推荐(0)

公告