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怎么创建外部表查看全部
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什么是外部表查看全部
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怎么往分区表中插入数据查看全部
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怎么创建分区表查看全部
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什么是分区表查看全部
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什么是内部表查看全部
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内部表创建语句查看全部
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hive architecture查看全部
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执行执行计划查看全部
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use 'show functions' to see the built-in Hive functions. use 'dfs -lsr /user/hive' to see what is in the hive data warehouse if table is managed. use '!COMMAND' like !pwd, !ls to execute native OS shell command. use 'source /filePath' to execute sqls from a specific file use 'hive -S' to start hive so that it does not print out the map-reduce logging to console查看全部
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archive.apache.org to download the old versions of Hive etc查看全部
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Interpretor: Analyses the syntax Compiler: Generate Execution plan which is like what we have in java(Compiles .java file into .class byte code) Optimizer: Tweak the execution plan(apply different rules) For Oracle we can do : explain plan for SomeSQLStatement; then select * from table(dbms_xplan.display); to check the detail of the execution plan(whether it is FullTableScan or IndexRangeScan etc...)查看全部
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hive -S查看全部
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外部表查看全部
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外部表查看全部
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