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我有以下架构HIVE表像这样的数组:蜂巢:加入到字符串列
hive>desc books;
gen_id int
author array<string>
rating double
genres array<string>
hive>select * from books;
| gen_id | rating | author |genres
+----------------+-------------+---------------+----------
| 1 | 10 | ["A","B"] | ["X","Y"]
| 2 | 20 | ["C","A"] | ["Z","X"]
| 3 | 30 | ["D"] | ["X"]
是否有一个地方,我可以执行一些SELECT操作查询并返回单个行,像这样:
| gen_id | rating | JoinData
+-------------+---------------+-------------
| 1 | 10 | ["A","B","X","Y"]
| 2 | 20 | ["C","A","Z","X"]
| 3 | 30 | ["D","X"]
| 1 | 10 | "Y"
有人可以指导我怎么能得到这个结果。预先感谢任何帮助。