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                合規國際互聯網加速 OSASE為企業客戶提供高速穩定SD-WAN國際加速解決方案。 廣告
                * 永久函數只能在當前數據庫有效,如果切換數據則報錯; ``` FAILED: SemanticException [Error 10011]: Invalid function my_lower ``` 步驟如下: (1)參照《自定義Hive函數流程》將jar包上傳到服務器上 (2)將jar上傳到HDFS上 ```shell [root@hadoop101 ~]# hadoop fs -put udf-1.0-SNAPSHOT.jar /home/hadoop/jars/ ``` (3)創建永久函數 ```shell ########## 創建永久函數 ############## create function my_lower as 'udf.Str2Lower' using jar 'hdfs:///home/hadoop/jars/udf-1.0-SNAPSHOT.jar' ########## 刪除自定義永久函數 ############# hive (test)> drop function add_prefix; ```
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