不匹配的输入“>”在结构类型中期望 < 靠近“STRUCT”

Posted 2023-04-15

【中文标题】不匹配的输入“>”在结构类型中期望 < 靠近“STRUCT”

【英文标题】：mismatched input '>' expecting < near 'STRUCT' in struct type

【发布时间】：2017-02-20 13:39:30

【问题描述】：

FAILED: ParseException line 1:161 mismatched input '>' 期望 CREATE EXTERNAL TABLE user1 (id BIGINT, created_at STRING, source STRING, favorited BOOLEAN, retweet_count INT, retweeted_status STRUCTsreen_name:STRING,name:STRING>>, 实体 STRUCT , user_mentions:ARRAY>, hashtags:ARRAY>>,text STRING, user STRUCT, in_reply_to_screen_name STRING) ROW FORMAT DELIMITED FIELDS TERMINATED BY ",";

请问我该如何解决这个问题？

【参考方案1】：

CREATE EXTERNAL TABLE user1 
(
    id                      BIGINT
   ,created_at              STRING
   ,source                  STRING
   ,favorited               BOOLEAN
   ,retweet_count           INT

   ,retweeted_status        STRUCT
                            <
                                text:STRING

                               ,user:STRUCT
                                <
                                    sreen_name  :STRING
                                   ,name        :STRING
                                >
                            >

   ,entities                STRUCT
                            <
                                urls            :ARRAY<STRING>
                               ,user_mentions   :ARRAY<STRING>
                               ,hashtags        :ARRAY<STRING>
                            >

   ,text                    STRING
   ,user                    STRING
   ,in_reply_to_screen_name STRING
) 
    ROW FORMAT DELIMITED 
    FIELDS TERMINATED BY ","
;

【讨论】：

数组和结构应该有类型定义Array/Struct <definition>