{"id":36706,"date":"2023-09-02T00:03:29","date_gmt":"2022-12-06T15:18:29","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/apache-hive-%e7%ae%80%e4%bb%8b-hiveql-%e5%bf%ab%e9%80%9f%e5%8f%82%e8%80%83%e6%89%8b%e5%86%8c\/"},"modified":"2024-04-30T21:10:02","modified_gmt":"2024-04-30T13:10:02","slug":"apache-hive-%e7%ae%80%e4%bb%8b-hiveql-%e5%bf%ab%e9%80%9f%e5%8f%82%e8%80%83%e6%89%8b%e5%86%8c","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/apache-hive-%e7%ae%80%e4%bb%8b-hiveql-%e5%bf%ab%e9%80%9f%e5%8f%82%e8%80%83%e6%89%8b%e5%86%8c\/","title":{"rendered":"Apache Hive \u7b80\u4ecb\/ HiveQL \u5feb\u901f\u53c2\u8003\u624b\u518c"},"content":{"rendered":"

\u9996\u5148<\/h1>\n

\u5728\u8fd9\u7bc7\u6587\u7ae0\u4e2d\uff0c\u603b\u7ed3\u4e86Hive\u7684\u6982\u8ff0\u548cHiveQL\u7684\u7f16\u5199\u65b9\u5f0f\u3002\u5728\u5904\u7406\u5927\u89c4\u6a21\u6570\u636e\u7684\u9879\u76ee\u4e2d\uff0c\u7ecf\u5e38\u9700\u8981\u540c\u65f6\u4f7f\u7528\u6807\u51c6SQL\u3001Presto\u548cHive\u7b49\u67e5\u8be2\u8bed\u8a00\uff0c\u4f46\u662f\u7531\u4e8e\u8fd9\u4e9b\u6280\u672f\u7684\u67b6\u6784\u548c\u67e5\u8be2\u8bed\u6cd5\u90fd\u4e0d\u4e00\u6837\uff0c\u6240\u4ee5\u9700\u8981\u8bb0\u4f4f\u5b83\u4eec\u5404\u81ea\u7684\u7279\u70b9\u3002\u4e3a\u4e86\u80fd\u591f\u8fc5\u901f\u56de\u60f3\u8d77\u8fd9\u4e9b\u533a\u522b\uff0c\u5c06\u4f1a\u63d0\u4f9b\u4e00\u4e2a\u53ef\u4f5c\u4e3a\u53c2\u8003\u7684\u63cf\u8ff0\u3002<\/p>\n

\"apache-hive.png\"<\/div>\n

Hive \u6458\u8981<\/h1>\n

Hive \u662f\u4e00\u79cd\u7528\u4e8e\u6267\u884c MapReduce \u7684\u540d\u4e3a HiveQL\uff08HQL\uff09\u7684 SQL \u7c7b\u578b DSL \u6280\u672f\u3002\u56e0\u6b64\uff0c\u5728\u5176\u80cc\u540e\u8fd0\u884c\u7740 MapReduce \u8fc7\u7a0b\uff0c\u4e0d\u9002\u5408\u50cf Presto \u6216 BigQuery \u90a3\u6837\u4ee5\u4e92\u52a8\u65b9\u5f0f\u5904\u7406\u6570\u636e\u3002<\/p>\n

\u8fd9\u662f\u4e00\u4e2a\u4f7f\u7528\u7c7b\u4f3c\u4e8eSQL\u7684\u8bed\u8a00\u7f16\u5199\u548c\u6267\u884c\u6279\u5904\u7406\u7684\u4e1c\u897f\u3002\u7531\u4e8e\u7c7b\u4f3c\u4e8eSQL\uff0c\u5b83\u5e76\u4e0d\u7b26\u5408\u6807\u51c6\u7684SQL\u89c4\u8303\uff0c\u4f46\u5b83\u4e0eMySQL\u7684\u8bed\u6cd5\u6700\u4e3a\u63a5\u8fd1\u3002<\/p>\n

Hive \u6587\u4ef6\u7684\u5b9e\u4f53<\/h1>\n

Hive\u7684\u6570\u636e\u4ee5HDFS\u4e0a\u7684\u6587\u4ef6\u5f62\u5f0f\u5b58\u5728\u3002\u6839\u636e\u9ed8\u8ba4\u8bbe\u7f6e\uff0c\u53ef\u4ee5\u5c06\u8868\u653e\u5728\u9ed8\u8ba4\u7684\u6570\u636e\u5e93\u4e2d\uff0c\u4e5f\u53ef\u4ee5\u5c06\u8868\u653e\u5728\u81ea\u5df1\u521b\u5efa\u7684\u6570\u636e\u5e93\u4e2d\uff0c\u8fd9\u6837\u4f1a\u7a0d\u5fae\u6539\u53d8\u76ee\u5f55\u7ed3\u6784\u3002<\/p>\n

\u540c\u65f6\uff0c\u60a8\u53ef\u4ee5\u901a\u8fc7\u6309\u7167\u65e5\u671f\u7b49\u5b57\u6bb5\u7684\u503c\u5bf9\u5206\u533a\uff08HDFS\u4e0a\u7684\u76ee\u5f55\uff09\u8fdb\u884c\u5212\u5206\uff0c\u4ece\u800c\u9650\u5236\u67e5\u8be2\u8303\u56f4\uff0c\u5e76\u52a0\u5feb\u5904\u7406\u901f\u5ea6\u3002<\/p>\n

\u4ee5\u4e0b\u662f\u5f53\u8868\u540d\u4e3atable1\u65f6\u7684\u76ee\u5f55\u7ed3\u6784\u793a\u4f8b\u3002<\/p>\n

    \n
  • \n
      default \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u4f8b\uff1a\/user\/hive\/warehouse\/table1<\/ul>\n<\/li>\n<\/ul>\n

       <\/p>\n

        \n
      • \n
          db1 \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u4f8b\uff1a\/user\/hive\/warehouse\/db1.db\/db1table1<\/ul>\n<\/li>\n<\/ul>\n

           <\/p>\n

            \u30d1\u30fc\u30c6\u30a3\u30b7\u30e7\u30f3\u5206\u5272\u306e\u4f8b\uff1a\/user\/hive\/warehouse\/table1\/year=2020\/month=12\/day=27<\/ul>\n

            Hive \u5143\u6570\u636e\u5b58\u50a8<\/h2>\n

            \u8868\u683c\u5b9a\u4e49\uff0c\u5982\u5217\u548c\u5176\u5c5e\u6027\u7b49\uff0c\u4f1a\u88ab\u4fdd\u5b58\u5728\u79f0\u4e3a\u5143\u6570\u636e\u5b58\u50a8\uff08MetaStore\uff09\u7684\u5173\u7cfb\u578b\u6570\u636e\u5e93\uff08RDBMS\uff09\u4e2d\u3002Hive\u7684\u6570\u636e\u88ab\u5904\u7406\u4e3a\u5b58\u5728\u4e8eHDFS\u4e0a\u7684\u5b9e\u9645\u6570\u636e\u6587\u4ef6\u548c\u5b58\u5728\u4e8eRDBMS\u4e2d\u7684\u5143\u6570\u636e\u4e4b\u95f4\u7684\u6620\u5c04\u5173\u7cfb\u3002<\/p>\n

            \u7531\u4e8eHive\u7684\u5b9e\u9645\u6570\u636e\u5b58\u50a8\u5728HDFS\u4e0a\uff0c\u6240\u4ee5\u65e0\u6cd5\u5bf9\u6570\u636e\u8fdb\u884c\u90e8\u5206\u8986\u76d6\u66f4\u65b0\u3002\u56e0\u6b64\uff0c\u5728HiveQL\u4e2d\u6ca1\u6709UPDATE\u6216DELETE\u8bed\u53e5\u3002<\/p>\n

            \u5b89\u88c5Hive<\/h1>\n

            \u5982\u679c\u5728Docker\u4e0a\u4f7f\u7528Apache Hadoop\u8fdb\u884c\u5165\u95e8\u5e76\u5b8c\u6210\u73af\u5883\u5b89\u88c5\uff08CDH\u5b89\u88c5\uff09\uff0c\u5219\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u8fdb\u884c\u5b89\u88c5\u3002\u5982\u679c\u4e0d\u662f\u8fd9\u79cd\u60c5\u51b5\uff0c\u8bf7\u53c2\u8003\u672c\u6587\u6216\u5176\u4ed6\u76f8\u5173\u6587\u7ae0\u3002<\/p>\n

            yum install <\/span>hive\r\n<\/code><\/pre>\n
            HiveQL\u7684\u6267\u884c\u65b9\u5f0f<\/h1>\n
            \u5728Hive\u4e2d\uff0c\u6709\u4e24\u79cd\u65b9\u6cd5\u53ef\u4ee5\u6267\u884c\u547d\u4ee4\uff1a\u901a\u8fc7Hive\u547d\u4ee4\u884c\u548c\u901a\u8fc7Hive Shell\u6267\u884c\u3002<\/p>\n
            \u5728\u547d\u4ee4\u884c\u4e2d\u6267\u884c\u7684\u65b9\u6cd5\u3002<\/h2>\n
            # \u30d5\u30a1\u30a4\u30eb\u540d\u3092\u6307\u5b9a\u3059\u308b\u65b9\u6cd5<\/span>\r\n$ <\/span>hive -f<\/span> <\u30d5\u30a1\u30a4\u30eb\u540d>\r\n\r\n# HiveQL \u3092\u76f4\u63a5\u8a18\u8ff0\u3059\u308b\u65b9\u6cd5<\/span>\r\n$ <\/span>hive -e<\/span> '<HiveQL>'<\/span>\r\n<\/code><\/pre>\n
            \u5728Hive\u4e2d\u6267\u884c\u7684\u65b9\u6cd5<\/h2>\n
            $ <\/span>hive\r\nhive ><\/span> <HiveQL>\r\n<\/code><\/pre>\n
            \u57fa\u672c\u7684HiveQL\u8bed\u6cd5<\/h1>\n
            \u6211\u5c06\u63cf\u8ff0HiveQL\u7684\u57fa\u672c\u8bed\u6cd5\u548c\u5176\u5b9e\u73b0\u793a\u4f8b\u3002<\/p>\n
            \u521b\u5efa\u6570\u636e\u5e93<\/h2>\n
            CREATE<\/span> DATABASE<\/span> db1<\/span>;<\/span>\r\n<\/code><\/pre>\n
            \u6570\u636e\u5e93\u7684\u4f7f\u7528<\/h2>\n
            USE<\/span> db1<\/span>;<\/span>\r\n<\/code><\/pre>\n
            \u6570\u636e\u5e93\u7684\u5217\u8868\u663e\u793a<\/h2>\n
            SHOW<\/span> DATABASES<\/span>;<\/span>\r\n<\/code><\/pre>\n
            \u521b\u5efa\u684c\u5b50<\/h2>\n
            CREATE<\/span> [<\/span>EXTERNAL<\/span>]<\/span> TABLE<\/span> [<\/span>IF<\/span> NOT<\/span> EXISTS<\/span>]<\/span> <<\/span>\u30c6\u30fc\u30d6\u30eb\u540d<\/span>><\/span>\r\n  [(<\/span><<\/span>\u30ab\u30e9\u30e0\u540d<\/span>><\/span> <<\/span>\u30c7\u30fc\u30bf\u578b<\/span>><\/span> [<\/span>COMMENT<\/span> <<\/span>\u30ab\u30e9\u30e0\u8aac\u660e<\/span>><\/span>],<\/span> ...)]<\/span>\r\n  [<\/span>COMMENT<\/span> <<\/span>\u30c6\u30fc\u30d6\u30eb\u8aac\u660e<\/span>><\/span>]<\/span> -- \u30b3\u30e1\u30f3\u30c8\u3092\u4ed8\u4e0e<\/span>\r\n  [<\/span>PARTITIONED<\/span> BY<\/span> (<\/span><<\/span>\u30ab\u30e9\u30e0\u540d<\/span>><\/span> <<\/span>\u30c7\u30fc\u30bf\u578b<\/span>><\/span> [<\/span>COMMENT<\/span> <<\/span>\u30ab\u30e9\u30e0\u8aac\u660e<\/span>><\/span>],<\/span> ...)]<\/span> -- \u6307\u5b9a\u306e\u30ab\u30e9\u30e0\u540d\u3067\u30d1\u30fc\u30c6\u30a3\u30b7\u30e7\u30cb\u30f3\u30b0<\/span>\r\n  [<\/span>CLUSTERED<\/span> BY<\/span> (<\/span><<\/span>\u30ab\u30e9\u30e0\u540d<\/span>><\/span>,<\/span> ...)<\/span> [<\/span>SORTED<\/span> BY<\/span> (<\/span><<\/span>\u30ab\u30e9\u30e0\u540d<\/span>><\/span> [<\/span>{<\/span>ASC<\/span>|<\/span>DESC<\/span>}<\/span>],<\/span> ...)]<\/span> INTO<\/span> <<\/span>\u30d0\u30b1\u30c3\u30c8\u6570<\/span>><\/span> BUCKETS<\/span>]<\/span> -- \u30c6\u30fc\u30d6\u30eb\u3084\u30d1\u30fc\u30c6\u30a3\u30b7\u30e7\u30f3\u306b\u5bfe\u3057\u3066\u30d0\u30b1\u30c3\u30c8\u6570\u3092\u6307\u5b9a\u3057\u3066\u5206\u5272\u3059\u308b\uff08\u30c7\u30fc\u30bf\u3092\u30bd\u30fc\u30c8\u3057\u3066\u304a\u304f\u3053\u3068\u304c\u53ef\u80fd\uff09<\/span>\r\n  [<\/span>ROW<\/span> FORMAT<\/span> {<\/span>DELIMITED<\/span>|<\/span>SERDE<\/span>}<\/span>\r\n    -- DELIMITED \u6307\u5b9a\u306e\u5834\u5408<\/span>\r\n    [<\/span>FIELDS<\/span> TERMINATED<\/span> BY<\/span> <<\/span>\u30ab\u30e9\u30e0\u306e\u533a\u5207\u308a\u6587\u5b57<\/span>><\/span>]<\/span> -- \u30c7\u30d5\u30a9\u30eb\u30c8\u306f\u306a\u3057<\/span>\r\n    [<\/span>COLLECTION<\/span> ITEMS<\/span> TERMINATED<\/span> BY<\/span> <<\/span>\u914d\u5217\u306e\u533a\u5207\u308a\u6587\u5b57<\/span>><\/span>]<\/span> -- \u30c7\u30d5\u30a9\u30eb\u30c8\u306f\u306a\u3057<\/span>\r\n    [<\/span>MAP<\/span> KEYS<\/span> TERMINATED<\/span> BY<\/span> <<\/span>Map<\/span>\u306e\u533a\u5207\u308a\u6587\u5b57<\/span>><\/span>]<\/span> -- \u30c7\u30d5\u30a9\u30eb\u30c8\u306f\u306a\u3057<\/span>\r\n    [<\/span>LINES<\/span> TERMINATED<\/span> BY<\/span> <<\/span>\u884c\u306e\u533a\u5207\u308a\u6587\u5b57<\/span>><\/span>]<\/span> -- \u30c7\u30d5\u30a9\u30eb\u30c8\u306f\u306a\u3057<\/span>\r\n    -- SERDE \u6307\u5b9a\u306e\u5834\u5408<\/span>\r\n    [<\/span><<\/span>SerDe<\/span> \uff08\u30b7\u30ea\u30a2\u30e9\u30a4\u30ba\u30fb\u30c7\u30b7\u30ea\u30a2\u30e9\u30a4\u30ba\u30af\u30e9\u30b9\u306e\u540d\u524d\uff09<\/span>><\/span> WITH<\/span> SERDEPROPERTIES<\/span>(<\/span>\u30d7\u30ed\u30d1\u30c6\u30a3\u540d<\/span> =<\/span> \u5024<\/span>,<\/span> ...)]]<\/span>\r\n  [<\/span>STORED<\/span> AS<\/span> <<\/span>\u30d5\u30a1\u30a4\u30eb\u30d5\u30a9\u30fc\u30de\u30c3\u30c8<\/span>><\/span>]<\/span> -- TEXTFILE\uff08\u30c7\u30d5\u30a9\u30eb\u30c8\uff09, SEQUENCEFILE, RCFILE\uff08\u5217\u6307\u5411\uff09, INPUTFORMAT<\u30af\u30e9\u30b9\u540d>, OUTPUTFORMAT<\u30af\u30e9\u30b9\u540d> \u306e\u3044\u3065\u308c\u304b<\/span>\r\n  [<\/span>LOCATION<\/span> <<\/span>HDFS<\/span> \u30d1\u30b9<\/span>><\/span>]<\/span> -- \u6307\u5b9a\u304c\u306a\u3044\u5834\u5408\u306f \/user\/hive\/warehouse\/<\u30c6\u30fc\u30d6\u30eb\u540d><\/span>\r\n  [<\/span>TBLPROPERTIES<\/span> (<\/span>property_name<\/span>=<<\/span>\u30d7\u30ed\u30d1\u30c6\u30a3\u540d<\/span>><\/span>,<\/span> ...)]<\/span> -- \u30e6\u30fc\u30b6\u30fc\u72ec\u81ea\u306e\u30e1\u30bf\u30c7\u30fc\u30bf<\/span>\r\n  [<\/span>AS<\/span> <<\/span>SELECT<\/span> \u6587<\/span>><\/span>]<\/span> -- SELECT \u6587\u306e\u5b9f\u884c\u7d50\u679c\u304b\u3089\u30c6\u30fc\u30d6\u30eb\u3092\u4f5c\u6210\u3059\u308b<\/span>\r\n<\/code><\/pre>\n
            \u4ee5\u4e0b\u662f\u5728\u521b\u5efa\u4e00\u4e2a\u4ee5\u6587\u672c\u6587\u4ef6\u5b58\u50a8\uff0c\u5176\u4e2d\u5217\u7684\u5206\u9694\u7b26\u662f\u9017\u53f7\uff08,\uff09\uff0c\u884c\u7684\u5206\u9694\u7b26\u662f\u6362\u884c\u7b26\uff08\\n\uff09\u7684\u8868\u7684\u793a\u4f8b\u7684\u67e5\u8be2\u3002<\/p>\n
            CREATE<\/span> TABLE<\/span> table1<\/span>\r\n  (<\/span>col1<\/span> INT<\/span>,<\/span> col2<\/span> INT<\/span>,<\/span> col3<\/span> INT<\/span>,<\/span> col4<\/span> STRING<\/span>)<\/span>\r\n  ROW<\/span> FORMAT<\/span> DELIMITED<\/span> FIELDS<\/span> TERMINATED<\/span> BY<\/span> ','<\/span> LINES<\/span> TERMINATED<\/span> BY<\/span> '<\/span>\\n<\/span>'<\/span>\r\n  STORED<\/span> AS<\/span> TEXTFILE<\/span>;<\/span>\r\n<\/code><\/pre>\n
            \u4ee5\u4e0b\u662f\u521b\u5efa\u4e00\u4e2a\u5177\u5907\u5206\u533a col1 \u548c col2\u3001\u4ee5\u53ca\u5176\u4ed6 col3 \u548c col4 \u5217\u7684\u8868\u7684\u793a\u4f8b\u67e5\u8be2\u3002<\/p>\n
            CREATE<\/span> TABLE<\/span> table1<\/span>\r\n  (<\/span>col3<\/span> INT<\/span>,<\/span> col4<\/span> INT<\/span>)<\/span>\r\n  PARTITIONED<\/span> BY<\/span> (<\/span>col1<\/span> INT<\/span>,<\/span> col2<\/span> INT<\/span>);<\/span>\r\n<\/code><\/pre>\n
            \u8868\u683c\u663e\u793a<\/h2>\n
            SHOW<\/span> TABLES<\/span>;<\/span>\r\n<\/code><\/pre>\n
            \u5c55\u793a\u684c\u5b50\u7684\u8be6\u7ec6\u4fe1\u606f<\/h2>\n
            DESC<\/span> [<\/span>FORMATTED<\/span>]<\/span> <<\/span>\u30c6\u30fc\u30d6\u30eb\u540d<\/span>><\/span>;<\/span> -- FORMATTED\uff1a\u3088\u308a\u8a73\u7d30\u306a\u60c5\u5831\u3092\u8868\u793a\u3059\u308b<\/span>\r\n<\/code><\/pre>\n
            \u5220\u9664\u8868\u683c<\/h2>\n
            DROP<\/span> TABLE<\/span> [<\/span>IF<\/span> EXISTS<\/span>]<\/span> <<\/span>\u30c6\u30fc\u30d6\u30eb\u540d<\/span>><\/span>;<\/span>\r\n<\/code><\/pre>\n
            \u6570\u636e\u63d2\u5165<\/h2>\n
            \u4ece\u6587\u4ef6\u7cfb\u7edf\u4e2d\u63d2\u5165\u6570\u636e\u3002<\/h3>\n
            \u4f7f\u7528\u672c\u5730\u6587\u4ef6\u7cfb\u7edf\u6216HDFS\u4e0a\u7684\u6570\u636e\u4f5c\u4e3a\u8f93\u5165\u3002\u56e0\u6b64\uff0c\u5b9e\u9645\u4e0a\u662f\u5c06\u6587\u4ef6\u79fb\u52a8\u5230\u5b58\u50a8Hive\u6570\u636e\u7684\u76ee\u5f55\u4e2d\uff0c\u4e0eHive\u7684\u64cd\u4f5c\u76f8\u540c\u3002<\/p>\n
            LOAD<\/span> DATA<\/span>\r\n  [<\/span>LOCAL<\/span>]<\/span> -- \u6307\u5b9a\u3057\u305f\u5834\u5408\uff1a\u30ed\u30fc\u30ab\u30eb\u30d5\u30a1\u30a4\u30eb\u30b7\u30b9\u30c6\u30e0\u4e0a\u306e\u5165\u529b\u30c7\u30fc\u30bf\u3001\u6307\u5b9a\u3057\u306a\u304b\u3063\u305f\u5834\u5408\uff1aHDFS \u4e0a\u306e\u5165\u529b\u30c7\u30fc\u30bf<\/span>\r\n  INPATH<\/span> '<\u30d5\u30a1\u30a4\u30eb\u30d1\u30b9>'<\/span>\r\n  [<\/span>OVERWRITE<\/span>]<\/span> -- \u6307\u5b9a\u3057\u305f\u5834\u5408\uff1aTRUNCATE\u3001\u6307\u5b9a\u3057\u306a\u304b\u3063\u305f\u5834\u5408\uff1aAPPEND<\/span>\r\n  INTO<\/span> TABLE<\/span> <<\/span>\u30c6\u30fc\u30d6\u30eb\u540d<\/span>><\/span>\r\n  [<\/span>PARTITION<\/span> (<\/span>col1<\/span>=<\/span>val1<\/span>,<\/span> col2<\/span>=<\/span>val2<\/span>,<\/span> ...)]<\/span> -- \u6307\u5b9a\u3057\u305f\u5834\u5408\uff1a\u7279\u5b9a\u306e\u30d1\u30fc\u30c6\u30a3\u30b7\u30e7\u30f3\u306b\u30c7\u30fc\u30bf\u3092\u633f\u5165\u3059\u308b<\/span>\r\n<\/code><\/pre>\n
            \u5c06\u6570\u636e\u4eceHive\u8868\u63d2\u5165<\/h3>\n
            \u5c06\u5bf9Hive\u8868\u7684\u67e5\u8be2\u7ed3\u679c\u63d2\u5165\u5230\u65b0\u7684Hive\u8868\u4e2d\u3002<\/p>\n
            INSERT<\/span>\r\n  [<\/span>{<\/span>OVERWRITE<\/span>|<\/span>INTO<\/span>}<\/span>]<\/span> -- OVERWRITE \u3092\u6307\u5b9a\u3057\u305f\u5834\u5408\uff1aTRUNCATE\u3001INTO \u3092\u6307\u5b9a\u3057\u305f\u5834\u5408\uff1aAPPEND<\/span>\r\n  TABLE<\/span> <<\/span>\u30c6\u30fc\u30d6\u30eb\u540d<\/span>><\/span>\r\n  [<\/span>PARTITION<\/span> (<\/span>col1<\/span>=<\/span>val1<\/span>,<\/span> col2<\/span>=<\/span>val2<\/span>,<\/span> ...)<\/span> IF<\/span> NOT<\/span> EXISTS<\/span>]<\/span> -- IF NOT EXISTS \u3092\u6307\u5b9a\u3059\u308b\u3068\u3001\u30c7\u30fc\u30bf\u304c\u5b58\u5728\u3057\u306a\u3044\u5834\u5408\u306e\u307f\u30c7\u30fc\u30bf\u3092\u633f\u5165\u3067\u304d\u308b<\/span>\r\n  <<\/span>SELECT<\/span> \u53e5<\/span>><\/span> FROM<\/span> <<\/span>FROM<\/span> \u53e5<\/span>><\/span>\r\n<\/code><\/pre>\n
            \u5c06\u6570\u636e\u63d2\u5165\u591a\u5f20\u8868\u4e2d\u3002<\/h3>\n
            \u60a8\u53ef\u4ee5\u5c06\u67e5\u8be2\u7684\u7ed3\u679c\u63d2\u5165\u5230\u591a\u4e2a\u8868\u4e2d\u3002<\/p>\n
            FROM<\/span> <<\/span>\u30bd\u30fc\u30b9\u30c6\u30fc\u30d6\u30eb\u540d<\/span>><\/span>\r\n  INSERT<\/span> INTO<\/span> TABLE<\/span> <<\/span>\u5b9b\u5148\u30c6\u30fc\u30d6\u30eb\u540d\u2460<\/span>><\/span> SELECT<\/span> col1<\/span>,<\/span> col2<\/span> WHERE<\/span> col1<\/span> >=<\/span> 0<\/span>\r\n  INSERT<\/span> INTO<\/span> TABLE<\/span> <<\/span>\u5b9b\u5148\u30c6\u30fc\u30d6\u30eb\u540d\u2461<\/span>><\/span> SELECT<\/span> col1<\/span>,<\/span> col2<\/span> WHERE<\/span> col1<\/span> <<\/span> 0<\/span>\r\n<\/code><\/pre>\n
            \u6b64\u5916\uff0c\u60a8\u8fd8\u53ef\u4ee5\u5c06\u6570\u636e\u63d2\u5165\u5230\u591a\u4e2a\u5206\u533a\u4e2d\u3002<\/p>\n
            INSERT<\/span>\r\n  [<\/span>{<\/span>OVERWRITE<\/span>|<\/span>INTO<\/span>}<\/span>]<\/span>\r\n  TABLE<\/span> <<\/span>\u30bd\u30fc\u30b9\u30c6\u30fc\u30d6\u30eb\u540d<\/span>><\/span>\r\n  PARTITION<\/span> (<\/span>col1<\/span>=<\/span>val1<\/span>,<\/span> col2<\/span>=<\/span>val2<\/span>,<\/span> ...)<\/span>\r\n  <<\/span>SELECT<\/span> \u53e5<\/span>><\/span> FROM<\/span> <<\/span>FROM<\/span> \u53e5<\/span>><\/span>\r\n<\/code><\/pre>\n
            \u8f93\u51fa\u6570\u636e<\/h2>\n
            \u60a8\u53ef\u4ee5\u5c06\u5bf9Hive\u8868\u7684\u67e5\u8be2\u7ed3\u679c\u8f93\u51fa\u5230\u6587\u4ef6\u7cfb\u7edf\u4e2d\u3002<\/p>\n
            INSERT<\/span> OVERWRITE<\/span>\r\n  [<\/span>LOCAL<\/span>]<\/span> -- \u6307\u5b9a\u3057\u305f\u5834\u5408\uff1a\u30ed\u30fc\u30ab\u30eb\u30d5\u30a1\u30a4\u30eb\u30b7\u30b9\u30c6\u30e0\u306b\u51fa\u529b\u3001\u6307\u5b9a\u3057\u306a\u304b\u3063\u305f\u5834\u5408\uff1aHDFS \u306b\u51fa\u529b<\/span>\r\n  DIRECTORY<\/span> '<\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u540d>'<\/span>\r\n  <<\/span>SELECT<\/span> \u53e5<\/span>><\/span> FROM<\/span> <<\/span>FROM<\/span> \u53e5<\/span>><\/span>\r\n<\/code><\/pre>\n
            \u641c\u7d22\u6570\u636e<\/h2>\n
            \u5c3d\u7ba1HiveQL\u4e0e\u6807\u51c6SQL\u4e4b\u95f4\u5b58\u5728\u4e00\u4e9b\u884c\u4e3a\u4e0a\u7684\u5dee\u5f02\uff0c\u4f46\u60a8\u4ecd\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u5e38\u89c1\u51fd\u6570\u8fdb\u884c\u64cd\u4f5c\uff08\u90e8\u5206\u5217\u4e3e\uff09\u3002<\/p>\n
            \n
            \u30b8\u30e3\u30f3\u30eb\u540d\u524d\u5099\u8003\u96c6\u8a08\u95a2\u6570MAX
            \n\u96c6\u8a08\u95a2\u6570MIN
            \n\u96c6\u8a08\u95a2\u6570COUNT
            \n\u96c6\u8a08\u95a2\u6570SUM
            \n\u96c6\u8a08\u95a2\u6570AVG
            \n\u914d\u5217\u95a2\u6570COLLECT_LISTARRAY_AGG \u3068\u307b\u307c\u540c\u3058\u914d\u5217\u95a2\u6570COLLECT_SETARRAY_AGG \u3068\u307b\u307c\u540c\u3058\uff08\u91cd\u8907\u6392\u9664\uff09\u914d\u5217\u95a2\u6570ARRAY
            \n\u6587\u5b57\u5217\u95a2\u6570REPLACE
            \n\u6587\u5b57\u5217\u95a2\u6570COALESCE
            \n\u6587\u5b57\u5217\u95a2\u6570CONCAT
            \n\u6587\u5b57\u5217\u95a2\u6570CONCAT_WS\u7b2c 1 \u5f15\u6570\u306e\u533a\u5207\u308a\u6587\u5b57\u3067\u3001
            \n\u7b2c 2 \u5f15\u6570\u4ee5\u964d\u306e\u6587\u5b57\u3092\u7d50\u5408\u3059\u308b<\/p>\n
            CONCAT_WS(delimiter, str1, str2, …)\u6587\u5b57\u5217\u95a2\u6570LENGTH
            \n\u6587\u5b57\u5217\u95a2\u6570LOWER
            \n\u6587\u5b57\u5217\u95a2\u6570UPPER
            \n\u6587\u5b57\u5217\u95a2\u6570SUBSTR
            \n\u6587\u5b57\u5217\u95a2\u6570REGEXP_REPLACE
            \n\u6587\u5b57\u5217\u95a2\u6570REGEXP_EXTRACT
            \n\u6587\u5b57\u5217\u95a2\u6570SPLIT
            \n\u5206\u6790\u95a2\u6570OVER(PARTITION BY ~ ORDER BY ~)
            \n\u756a\u53f7\u4ed8\u3051\u95a2\u6570RANK
            \n\u756a\u53f7\u4ed8\u3051\u95a2\u6570ROW_NUMBER
            \n\u30ca\u30d3\u30b2\u30fc\u30b7\u30e7\u30f3\u95a2\u6570LEAD
            \n\u30ca\u30d3\u30b2\u30fc\u30b7\u30e7\u30f3\u95a2\u6570LAG
            \n\u30ca\u30d3\u30b2\u30fc\u30b7\u30e7\u30f3\u95a2\u6570LAST_VALUE
            \n\u30ca\u30d3\u30b2\u30fc\u30b7\u30e7\u30f3\u95a2\u6570FIRST_VALUE
            \n\u6570\u5b66\u95a2\u6570RAND
            \n\u6570\u5b66\u95a2\u6570ROUND
            \n\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u95a2\u6570UNIX_TIMESTAMP
            \n\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u95a2\u6570FROM_UNIXTIME
            \n\u65e5\u4ed8\u95a2\u6570DATEDIFF
            \n\u65e5\u4ed8\u95a2\u6570DATE_ADD
            \n\u65e5\u4ed8\u95a2\u6570DATE_SUB
            \n\u65e5\u4ed8\u95a2\u6570DATE_FORMAT
            \n\u305d\u306e\u4ed6DISTINCT
            \n\u305d\u306e\u4ed6GROUP BY
            \n\u305d\u306e\u4ed6CAST
            \n\u305d\u306e\u4ed6LIKE
            \n\u305d\u306e\u4ed6RLIKE\u6b63\u898f\u8868\u73fe\u3067\u691c\u7d22<\/p><\/div>\n<\/div>\n
            \u5728\u641c\u7d22\u7ed3\u679c\u4e2d\u5305\u542b\u5217\u540d<\/h3>\n
            \u5982\u679c\u60f3\u5728\u641c\u7d22\u7ed3\u679c\u4e2d\u5305\u62ec\u5217\u540d\uff0c\u5219\u9700\u8981\u8fdb\u884c\u4ee5\u4e0b\u8bbe\u7f6e\u3002<\/p>\n
            $ <\/span>hive\r\nhive ><\/span> set <\/span>hive.cli.print.header=<\/span>true<\/span>;<\/span>\r\n<\/code><\/pre>\n
            \u4f7f\u7528\u6392\u5e8f BY \u800c\u4e0d\u662f\u6309\u7167 BY \u8fdb\u884c\u6392\u5e8f\u3002<\/h3>\n
            \u53ef\u4ee5\u4f7f\u7528ORDER BY\u6765\u5bf9\u7ed3\u679c\u8fdb\u884c\u6392\u5e8f\uff0c\u4f46\u7531\u4e8e\u4f1a\u5bf9\u6574\u4e2a\u8f93\u51fa\u7ed3\u679c\u8fdb\u884c\u6392\u5e8f\uff0c\u6240\u4ee5Reducer\u7684\u6570\u91cf\u4f1a\u53d7\u9650\uff0c\u53ef\u80fd\u4f1a\u5f71\u54cd\u6027\u80fd\u3002<\/p>\n
            \u53e6\u5916\uff0c\u5982\u679cHive\u7684\u9009\u9879\u8bbe\u7f6e\u4e3ahive.mapred.mode=nonstrict\uff0cORDER BY\u6392\u5e8f\u5c06\u5728\u5408\u9002\u7684\u65f6\u95f4\u88abHive\u4e2d\u65ad\u5904\u7406\u3002<\/p>\n
            \u203b \u5982\u679c hive.mapred.mode=strict \u7684\u8bdd\u4e0d\u4f1a\u88ab\u4e2d\u65ad\uff0c\u4f46\u9700\u8981\u6307\u5b9a LIMIT\u3002<\/p>\n
            \u5f53\u4f7f\u7528 SORT BY \u529f\u80fd\u65f6\uff0c\u53ef\u4ee5\u8ba9 Reducer \u5e76\u884c\u6267\u884c\uff0c\u5e76\u5bf9\u6240\u6709\u6570\u636e\u8fdb\u884c\u6392\u5e8f\u3002<\/p>\n
            SELECT<\/span> col1<\/span> FROM<\/span> table1<\/span> SORT<\/span> BY<\/span> col1<\/span> DESC<\/span>;<\/span>\r\n<\/code><\/pre>\n
            \u4e2d\u56fd\u81f3\u53f0\u6e7e\uff1a\u52a0\u5165\uff08\u4f46\u65e0\u6cd5\u5728ON\u5b50\u53e5\u4e2d\u4f7f\u7528NOT\u6761\u4ef6\uff09<\/h3>\n
            \u5728HiveQL\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u5185\u90e8\u8fde\u63a5\u3001\u5916\u90e8\u8fde\u63a5\u3001\u5b8c\u5168\u5916\u90e8\u8fde\u63a5\u3001\u534a\u8fde\u63a5\u548c\u4ea4\u53c9\u8fde\u63a5\u3002JOIN\u7684\u9ed8\u8ba4\u8fde\u63a5\u662f\u5185\u90e8\u8fde\u63a5\u3002<\/p>\n
            INNER JOIN\uff1a\u5185\u90e8\u7d50\u5408<\/p>\n
            LEFT (OUTER) JOIN\uff1a\u5916\u90e8\u7d50\u5408<\/p>\n
            RIGHT (OUTER) JOIN\uff1a\u5916\u90e8\u7d50\u5408<\/p>\n
            FULL (OUTER) JOIN\uff1a\u5b8c\u5168\u5916\u90e8\u7d50\u5408<\/p>\n
            LEFT SEMI JOIN\uff1a\u534a\u7d50\u5408\uff08INNER JOIN \u3057\u305f\u7d50\u679c\u306e\u5de6\u5074\u306e\u30c6\u30fc\u30d6\u30eb\u306e\u5217\u306e\u307f\u51fa\u529b\u3059\u308b\uff09<\/p>\n
            CROSS JOIN\uff1a\u30af\u30ed\u30b9\u7d50\u5408<\/p>\n
            \u867d\u7136\u53ef\u4ee5\u4f7f\u7528\u4e0d\u540c\u7684 JOIN \u6765\u5b9e\u73b0\u8fd9\u4e00\u70b9\uff0c\u4f46\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u5728 HiveQL \u7684 JOIN \u4e2d\u65e0\u6cd5\u5728 ON \u5b50\u53e5\u4e2d\u4f7f\u7528 NOT\u3002<\/p>\n
            -- !!\u3053\u308c\u306f\u5b9f\u884c\u3067\u304d\u306a\u3044<\/span>\r\nSELECT<\/span> table1<\/span>.<\/span>col1<\/span> FROM<\/span> table1<\/span> JOIN<\/span> table2<\/span> ON<\/span> table1<\/span>.<\/span>col1<\/span> <><\/span> table2<\/span>.<\/span>col1<\/span>\r\n<\/code><\/pre>\n
            \u53ea\u5728\u54ea\u91cc\u65e0\u6cd5\u4f7f\u7528\/\u5b58\u5728<\/h3>\n
            \u5728HiveQL\u4e2d\uff0c\u4e0d\u80fd\u4f7f\u7528WHERE\u5b50\u53e5\u5185\u7684IN\/EXISTS\u3002\u8981\u6267\u884c\u7c7b\u4f3c\u64cd\u4f5c\uff0c\u53ef\u4ee5\u4f7f\u7528LEFT SEMI JOIN\u3002<\/p>\n
            -- !!\u3053\u308c\u306f\u5b9f\u884c\u3067\u304d\u306a\u3044<\/span>\r\nSELECT<\/span> table1<\/span>.<\/span>col1<\/span>,<\/span> table1<\/span>.<\/span>col2<\/span> FROM<\/span> table1<\/span> WHERE<\/span> table1<\/span>.<\/span>col1<\/span> IN<\/span> (<\/span>SELECT<\/span> table2<\/span>.<\/span>col1<\/span> FROM<\/span> table2<\/span>);<\/span>\r\n<\/code><\/pre>\n
            SELECT<\/span> table1<\/span>.<\/span>col1<\/span>,<\/span> table1<\/span>.<\/span>col2<\/span> FROM<\/span> table1<\/span> LEFT<\/span> SEMI<\/span> JOIN<\/span> table2<\/span> ON<\/span> table1<\/span>.<\/span>col1<\/span> =<\/span> table2<\/span>.<\/span>col1<\/span>\r\n<\/code><\/pre>\n
            UNION \u53ea\u80fd\u5728\u5b50\u67e5\u8be2\u4e2d\u4f7f\u7528 ALL \u5b50\u53e5\u3002<\/h3>\n
            \u5728HiveQL\u4e2d\uff0c\u65e0\u6cd5\u4f7f\u7528UNION\uff08\u7701\u7565ALL\uff09\u6216UNION DISTINCT\uff0c\u53ea\u80fd\u4f7f\u7528UNION ALL\u3002\u800c\u4e14\uff0c\u4e0d\u80fd\u5728\u6700\u9876\u5c42\u4f7f\u7528UNION ALL\uff0c\u800c\u5fc5\u987b\u5728\u5b50\u67e5\u8be2\u4e2d\u8fdb\u884c\u7f16\u5199\u3002<\/p>\n
            SELECT<\/span> col1<\/span>,<\/span> col2<\/span> FROM<\/span> (<\/span>\r\n  SELECT<\/span> col1<\/span>,<\/span> col2<\/span> FROM<\/span> table1<\/span>\r\n  UNION<\/span> ALL<\/span>\r\n  SELECT<\/span> col1<\/span>,<\/span> col2<\/span> FROM<\/span> table2<\/span>\r\n)<\/span> tmp<\/span>\r\n<\/code><\/pre>\n
            HiveQL \u7684\u6570\u636e\u7c7b\u578b<\/h1>\n
            \u8fd9\u91cc\u4e00\u6b21\u6027\u6982\u8ff0\u4e86\u5728HiveQL\u4e2d\u5904\u7406\u7684\u6570\u636e\u7c7b\u578b\u3002<\/p>\n
            \u7c7b\u578b\u6e05\u5355<\/h2>\n
            \n
            \u578b\u306e\u30ab\u30c6\u30b4\u30ea\u578b\u306e\u7a2e\u985e\u578b\u8aac\u660e\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u578b\u6574\u6570\u578bTINYINT1 \u30d0\u30a4\u30c8\u306e\u6574\u6570
            \n\uff08-128 ~ 127\uff09\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u578b\u6574\u6570\u578bSMALLINT2 \u30d0\u30a4\u30c8\u306e\u6574\u6570
            \n\uff08-32,768 ~ 32,767\uff09\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u578b\u6574\u6570\u578bINT4 \u30d0\u30a4\u30c8\u306e\u6574\u6570\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u578b\u6574\u6570\u578bBIGINT8 \u30d0\u30a4\u30c8\u306e\u6574\u6570\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u578b\u6d6e\u52d5\u5c0f\u6570\u70b9\u578bFLOAT4 \u30d0\u30a4\u30c8\u306e\u6d6e\u52d5\u5c0f\u6570\u70b9\u6570\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u578b\u6d6e\u52d5\u5c0f\u6570\u70b9\u578bDOUBLE8 \u30d0\u30a4\u30c8\u306e\u6d6e\u52d5\u5c0f\u6570\u70b9\u6570\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u578b\u6d6e\u52d5\u5c0f\u6570\u70b9\u578bDECIMAL\u56fa\u5b9a\u5c0f\u6570\u70b9\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u578b\u6d6e\u52d5\u5c0f\u6570\u70b9\u578bNUMERICDECIMAL \u3068\u540c\u3058\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u578b\u8ad6\u7406\u578bBOOLEAN\u8ad6\u7406\u5024\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u578b\u6587\u5b57\u5217\u578bSTRING\u6587\u5b57\u5217\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u578b\u6587\u5b57\u5217\u578bVARCHAR\u6587\u5b57\u5217
            \n\uff081 ~ 65535 \u6587\u5b57\uff09\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u578b\u6587\u5b57\u5217\u578bCHAR\u6587\u5b57\u5217
            \n\uff08\u6700\u5927\u3067 255 \u6587\u5b57\uff09\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u578b\u30d0\u30a4\u30ca\u30ea\u578bBINARY\u30d0\u30a4\u30ca\u30ea\u30c7\u30fc\u30bf\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u578b\u65e5\u4ed8\u6642\u523b\u578bTIMESTAMP\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7
            \n\uff08\u30bf\u30a4\u30e0\u30be\u30fc\u30f3\u306a\u3057\uff09\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u578b\u65e5\u4ed8\u6642\u523b\u578bDATE\u65e5\u4ed8\u8907\u5408\u578b\u914d\u5217\u578bARRAY<\u30c7\u30fc\u30bf\u578b>\u914d\u5217\u8907\u5408\u578bMAP\u578bMAP<\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u578b, \u30c7\u30fc\u30bf\u578b>Key, Value \u5f62\u5f0f\u8907\u5408\u578b\u69cb\u9020\u4f53\u578bSTRUCT<\u30ab\u30e9\u30e0\u540d: \u30c7\u30fc\u30bf\u578b, …>\u8907\u6570\u306e\u30c7\u30fc\u30bf\u578b\u3092\u69cb\u9020\u5316\u8907\u5408\u578b\u5171\u7528\u4f53\u578bUNIONTYPE<\u30c7\u30fc\u30bf\u578b, \u30c7\u30fc\u30bf\u578b, …>\u6307\u5b9a\u3055\u308c\u305f\u30c7\u30fc\u30bf\u578b\u306e1\u3064\u3060\u3051\u3092\u4fdd\u6301<\/div>\n<\/div>\n
            \u8865\u5145\u7684\u4e8b\u9879<\/h2>\n
            \n
            \u578b\u88dc\u8db3TIMESTAMP\u5024\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\uff1a’YYYY-MM-DD HH:MM:SS.fffffffff’DATE\u5024\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\uff1a’YYYY-MM-DD’ARRAY<\u30c7\u30fc\u30bf\u578b>\u633f\u5165\u6642\uff1aINSERT ~ SELECT ARRAY(‘A’, ‘B’, ‘C’) ~
            \n\u691c\u7d22\u6642\uff1aSELECT a[0], a[1] ~MAP<\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u578b, \u30c7\u30fc\u30bf\u578b>\u633f\u5165\u6642\uff1aINSERT ~ SELECT MAP(‘key1’, ‘value1’, ‘key2’, ‘value2’) ~
            \n\u691c\u7d22\u6642\uff1aSELECT m[‘key1’], m[‘key2’] ~STRUCT<\u30ab\u30e9\u30e0\u540d: \u30c7\u30fc\u30bf\u578b, …>\u633f\u5165\u6642\uff1aINSERT ~ SELECT STRUCT(‘A’, ‘B’, ‘C’) ~
            \n\u691c\u7d22\u6642\uff1aSELECT s.\u30ab\u30e9\u30e0\u540d1, s.\u30ab\u30e9\u30e0\u540d2 ~<\/div>\n<\/div>\n
            \u7528\u6237\u81ea\u5b9a\u4e49\u51fd\u6570\uff08UDF\uff09<\/h1>\n
            \u5728 HiveQL \u4e2d\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528 Java \u5b9e\u73b0\u548c\u4f7f\u7528\u7528\u6237\u5b9a\u4e49\u7684\u51fd\u6570\u3002<\/p>\n
            \u521b\u5efa\u7528\u6237\u5b9a\u4e49\u51fd\u6570<\/h2>\n
            \u521b\u5efa\u7528\u6237\u81ea\u5b9a\u4e49\u51fd\u6570\u4e3b\u8981\u9700\u8981\u505a\u4e24\u4ef6\u4e8b\u3002<\/p>\n
              \n
            1. \n
                \u521b\u5efa\u4e00\u4e2a\u7ee7\u627forg.apache.hadoop.hive.ql.exec.UDF\u7684\u7c7b<\/ol>\n<\/li>\n<\/ol>\n
                 <\/p>\n
                  \u5b9e\u73b0evaluate\u65b9\u6cd5<\/ol>\n
                  package<\/span> com.example<\/span>;<\/span>\r\n\r\nimport<\/span> org.apache.hadoop.hive.ql.exec.UDF<\/span>;<\/span>\r\nimport<\/span> org.apache.hadoop.io.Text<\/span>;<\/span>\r\n\r\n\/\/ org.apache.hadoop.hive.ql.exec.UDF \u3092\u7d99\u627f\u3057\u305f\u30af\u30e9\u30b9\u3092\u4f5c\u6210\u3059\u308b<\/span>\r\npublic<\/span> final<\/span> class<\/span> OriginalUDF<\/span> extends<\/span> UDF<\/span> {<\/span>\r\n    \/\/ evaluate \u30e1\u30bd\u30c3\u30c9\u3092\u5b9f\u88c5\u3059\u308b<\/span>\r\n    public<\/span> Boolean<\/span> evaluate<\/span>(<\/span>final<\/span> Text<\/span> key<\/span>,<\/span> Text<\/span> ...<\/span> val<\/span>)<\/span> {<\/span>\r\n        for<\/span> (<\/span>Text<\/span> v:<\/span> val<\/span>)<\/span> {<\/span>\r\n            if<\/span> (<\/span>key<\/span>.<\/span>equals<\/span>(<\/span>v<\/span>))<\/span> {<\/span>\r\n                return<\/span> true<\/span>;<\/span>\r\n            }<\/span>\r\n        }<\/span>\r\n        return<\/span> false<\/span>;<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
                  \u4f7f\u7528\u7528\u6237\u5b9a\u4e49\u51fd\u6570<\/h2>\n
                  \u4e3a\u4e86\u4f7f\u7528\u7528\u6237\u81ea\u5b9a\u4e49\u51fd\u6570\uff0c\u4f60\u9700\u8981\u5c06 jar \u6587\u4ef6\u6ce8\u518c\u5230 Hive \u4e2d\u3002<\/p>\n
                    \n
                  1. \n
                      \u7f16\u8bd1\u5e76\u751f\u6210\u7c7b\u6587\u4ef6\u548cjar\u6587\u4ef6\u3002<\/ol>\n<\/li>\n<\/ol>\n
                       <\/p>\n
                        \n
                      1. \n
                          \u5728Hive Shell\u4e2d\u6267\u884cADD jar <jar\u6587\u4ef6\u8def\u5f84>\u3002<\/ol>\n<\/li>\n<\/ol>\n
                           <\/p>\n
                            \u5728Hive Shell\u4e2d\u6267\u884cCREATE TEMPORARY FUNCTION <\u51fd\u6570\u540d> AS ‘<\u7c7b\u540d>’\u3002<\/ol>\n
                            \u6267\u884c\u8fd9\u4e9b\u6b65\u9aa4\u540e\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528HiveQL\u4e2d\u7684\u51fd\u6570\u540d\u6765\u8c03\u7528\u5b83\u4eec\u3002<\/p>\n
                            hive ><\/span> ADD jar .\/original_udf.jar;<\/span>\r\nhive ><\/span> CREATE TEMPORARY FUNCTION original_udf AS 'com.example.OriginalUDF'<\/span>;<\/span>\r\nhive ><\/span> SELECT col1 FROM table1 WHERE original_udf(<\/span>col1, \"A\"<\/span>, \"B\"<\/span>)<\/span>;<\/span>\r\n<\/code><\/pre>\n
                            \u6574\u7406<\/h1>\n
                            \u5e0c\u671b\u672c\u6587\u80fd\u63d0\u4f9b Hive \u6982\u8ff0\u4ee5\u53ca HiveQL \u7684\u63cf\u8ff0\u65b9\u6cd5\u3002\u5e0c\u671b\u8fd9\u7bc7\u6587\u7ae0\u80fd\u4f5c\u4e3a\u4e00\u4e2a\u7b80\u5355\u7684\u53c2\u8003\u5de5\u5177\u4f9b\u60a8\u4f7f\u7528\u3002<\/p>\n
                            \u8bf7\u63d0\u4f9b\u5177\u4f53\u7684\u94fe\u63a5<\/h1>\n
                              \n
                            • \n
                                Hadoop\u5fb9\u5e95\u5165\u9580 \u7b2c2\u7248 \u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u5206\u6563\u51e6\u7406\u74b0\u5883\u306e\u69cb\u7bc9<\/ul>\n<\/li>\n<\/ul>\n
                                 <\/p>\n
                                  \n
                                • \n
                                    Apache Hive LanguageManual Types<\/ul>\n<\/li>\n<\/ul>\n
                                     <\/p>\n
                                      \n
                                    • \n
                                        hive(athena)\u306e InputFormat, OutputFormat, SerDe<\/ul>\n<\/li>\n<\/ul>\n
                                         <\/p>\n
                                          \n
                                        • \n
                                            HiveQL\uff08Hive\u306eSQL\u3063\u307d\u3044\u72ec\u81ea\u8a00\u8a9e\uff09\u306e\u30c6\u30fc\u30d6\u30eb\u306b\u95a2\u3059\u308b\u30e1\u30e2\u3002<\/ul>\n<\/li>\n<\/ul>\n
                                             <\/p>\n
                                              \n
                                            • \n
                                                HiveQL\u306b\u304a\u3051\u308b\u521d\u5fc3\u8005\u72e9\u308a<\/ul>\n<\/li>\n<\/ul>\n
                                                 <\/p>\n
                                                  Hadoop\u5229\u7528\u8005\u306a\u3089\u304d\u3063\u3068\u77e5\u3063\u3066\u308b\u3001Hive\/Presto\u30af\u30a8\u30ea\u95a2\u6570\u306e\u6319\u52d5\u306e\u9055\u3044<\/ul>\n","protected":false},"excerpt":{"rendered":"
                                                  \u9996\u5148 \u5728\u8fd9\u7bc7\u6587\u7ae0\u4e2d\uff0c\u603b\u7ed3\u4e86Hive\u7684\u6982\u8ff0\u548cHiveQL\u7684\u7f16\u5199\u65b9\u5f0f\u3002\u5728\u5904\u7406\u5927\u89c4\u6a21\u6570\u636e\u7684\u9879\u76ee\u4e2d\uff0c\u7ecf\u5e38\u9700\u8981\u540c\u65f6\u4f7f\u7528\u6807 […]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-36706","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\nApache Hive \u7b80\u4ecb\/ HiveQL \u5feb\u901f\u53c2\u8003\u624b\u518c - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/apache-hive-\u7b80\u4ecb-hiveql-\u5feb\u901f\u53c2\u8003\u624b\u518c\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Apache Hive \u7b80\u4ecb\/ HiveQL \u5feb\u901f\u53c2\u8003\u624b\u518c\" \/>\n<meta property=\"og:description\" content=\"\u9996\u5148 \u5728\u8fd9\u7bc7\u6587\u7ae0\u4e2d\uff0c\u603b\u7ed3\u4e86Hive\u7684\u6982\u8ff0\u548cHiveQL\u7684\u7f16\u5199\u65b9\u5f0f\u3002\u5728\u5904\u7406\u5927\u89c4\u6a21\u6570\u636e\u7684\u9879\u76ee\u4e2d\uff0c\u7ecf\u5e38\u9700\u8981\u540c\u65f6\u4f7f\u7528\u6807 […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/apache-hive-\u7b80\u4ecb-hiveql-\u5feb\u901f\u53c2\u8003\u624b\u518c\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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