Hive Operators and User-Defined Functions (UDFs) Hive Operators and User-Defined Functions (UDFs) Built-in Operators Relational Operators Arithmetic Operators Logical Operators Complex Type Constructors Operators on Complex Types Built-in Functions M…

Hive Concurrency Model Hive Concurrency Model Use Cases Turn Off Concurrency Debugging Configuration Locking in Hive Transactions Use Cases Concurrency support (http://issues.apache.org/jira/browse/HIVE-1293) is a must in databases and their use case…

Disclaimer Prerequisites Users, Groups, and Roles Names of Users and Roles Creating/Dropping/Using Roles Create/Drop Role Grant/Revoke Roles Viewing Granted Roles Privileges Grant/Revoke Privileges Viewing Granted Privileges Hive Operations and Requi…

LanguageManual WindowingAndAnalytics     Skip to end of metadata   Added by Lefty Leverenz, last edited by Lefty Leverenz on Aug 01, 2014  (view change) show comment Go to start of metadata   Windowing and Analytics Functions Windowing and Analytics…

Create/Drop/Alter View Create View Drop View Alter View Properties Alter View As Select Version information Icon View support is only available in Hive 0.6 and later. Create View CREATE VIEW [IF NOT EXISTS] view_name [(column_name [COMMENT column_com…

Status of Hive Authorization before Hive 0.13 SQL Standards Based Hive Authorization (New in Hive 0.13) Restrictions on Hive Commands and Statements Privileges Objects Object Ownership Users and Roles Names of Users and Roles Role Management Commands…

Hive Joins Hive Joins Join Syntax Examples MapJoin Restrictions Join Optimization Predicate Pushdown in Outer Joins Enhancements in Hive Version 0.11 Join Syntax Hive supports the following syntax for joining tables: join_table:     table_reference J…

Archiving for File Count Reduction Note: Archiving should be considered an advanced command due to the caveats involved. Archiving for File Count Reduction Overview Settings Usage Archive Unarchive Cautions and Limitations Under the Hood Overview Due…

1.没有接触,不知道这个事物是什么,所以不会产生任何问题.2.接触了,但是不知道他是什么,反正我每天都在用.3.有一定的了解,不够透彻.那么hive,1.我们对它了解多少?2.它到底是什么?3.hive和hadoop是什么关系?扩展:hbase和hive是什么关系? Hive最初是应Facebook每天产生的海量新兴社会网络数据进行管理和机器学习的需求而产生和发展的.那么,到底什么是Hive,我们先看看Hive官网Wiki是如何介绍Hive的(https://cwiki.apache.org/c…

Hive 是基于Hadoop 构建的一套数据仓库分析系统,它提供了丰富的SQL查询方式来分析存储在Hadoop 分布式文件系统中的数据,可以将结构 化的数据文件映射为一张数据库表,并提供完整的SQL查询功能,可以将SQL语句转换为MapReduce任务进行运行,通过自己的SQL 去查询分析需 要的内容,这套SQL 简称Hive SQL,使不熟悉mapreduce 的用户很方便的利用SQL 语言查询,汇总,分析数据.而mapreduce开发人员可以把 己写的mapper 和reducer 作为插件…