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[HIve - LanguageManual] Union
Union Syntaxselect_statement UNION ALL select_statement UNION ALL select_statement ...UNION is used to combine the result from multiple SELECT stateme...
分类:其他好文   时间:2015-01-26 13:28:53    阅读次数:142
[Hive - LanguageManual] Hive Concurrency Model (待)
Hive Concurrency ModelHive Concurrency ModelUse CasesTurn Off ConcurrencyDebuggingConfigurationLocking in Hive TransactionsUse CasesConcurrency suppor...
分类:其他好文   时间:2015-01-26 13:23:37    阅读次数:250
[Hive - LanguageManual ] Windowing and Analytics Functions (待)
LanguageManual WindowingAndAnalyticsSkip to end of metadataAdded byLefty Leverenz, last edited byLefty Leverenzon Aug 01, 2014(view change)show commen...
分类:Windows程序   时间:2015-01-26 13:19:57    阅读次数:458
[HIve - LanguageManual] Subqueries
Subqueries in the FROM ClauseSubqueries in the WHERE ClauseSubqueries in the FROM ClauseSELECT...FROM(subquery)name...SELECT...FROM(subquery)ASname......
分类:其他好文   时间:2015-01-26 13:18:54    阅读次数:215
[Hive - LanguageManual ] Explain (待)
EXPLAIN SyntaxEXPLAIN SyntaxHive provides anEXPLAINcommand that shows the execution plan for a query. The syntax for this statement is as follows:EXPL...
分类:其他好文   时间:2015-01-26 13:16:50    阅读次数:294
[HIve - LanguageManual] LateralView
Lateral View SyntaxDescriptionExampleMultiple Lateral ViewsOuter Lateral ViewsLateral View SyntaxlateralView: LATERAL VIEW udtf(expression) tableAlias...
分类:其他好文   时间:2015-01-26 13:13:59    阅读次数:212
[HIve - LanguageManual] XPathUDF
Documentation for Built-In User-Defined Functions Related To XPathUDFsxpath, xpath_short, xpath_int, xpath_long, xpath_float, xpath_double, xpath_numb...
分类:其他好文   时间:2015-01-26 11:43:03    阅读次数:357
Hive 打开调试模式
编程过程中发现错误,无法看到具体的错误信息,网上搜了下,按照下面的方法启动Hive Shell就可以打开调试(注意:此方法只对本次回话有效):hive --hiveconf hive.root.logger=DEBUG,console如果需要对所有会话有效,则可以修改Hive的配置文件。不过不建.....
分类:其他好文   时间:2015-01-26 11:42:31    阅读次数:213
[HIve - LanguageManual] Joins
Hive JoinsHive JoinsJoin SyntaxExamplesMapJoin RestrictionsJoin OptimizationPredicate Pushdown in Outer JoinsEnhancements in Hive Version 0.11Join Syn...
分类:其他好文   时间:2015-01-26 11:39:17    阅读次数:277
[HIve - LanguageManual] Transform [没懂]
Transform/Map-Reduce SyntaxSQL Standard Based Authorization Disallows TRANSFORMTRANSFORM ExamplesSchema-less Map-reduce ScriptsTyping the output of TR...
分类:其他好文   时间:2015-01-26 11:36:05    阅读次数:384
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