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                Hive PLSQL(HPL/SQL –Procedural SQL on Hadoop),即Hive存儲過程,Hive v2.0+版本支持。 <br/> Hive存儲過程不僅支持Hive,還支持在SparkSQL,其他NoSQL,甚至是RDBMS中使用類似于Oracle PL/SQL的功能,可以很方便的實現,比如自定義變量、基于一個結果集的游標、循環等等。 <br/> (1)首先創建`test.pl` 。 ```sql -- 定義存儲過程 create procedure getcount() begin declare cnt int = 0; select count(*) into cnt from employee; print 'users cnt: ' || cnt; end; -- 調用存儲過程 call getcount(); ``` (2)啟動 hive/bin下面的 `hplsql` 命令執行 `test.pl`文件
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