如何为复数数组<struct <...>＆gt;编写插入注释输入蜂巢？

Question

表格结构：

CREATE TABLE IF NOT EXISTS test.test_complex_alter(
    `id` STRING,
    `items` array<struct<
        quantity: INT,
        articleData:struct<subsysNumber:string>,
        pickedReason:string>> 
) STORED AS ORC;

如何使用INSERT查询INSERT数据到此复杂表中？

Answer 1

回答OP：

1. 创建一个包含1行的虚拟表（架构并不重要）。我们称之为dummy。
2. 运行以下查询，在您的test.test_complex_alter表中插入1行：

INSERT INTO TABLE test.test_complex_alter SELECT "id1", array(named_struct('quantity',20, 'articleData', named_struct('subsysNumber', 'subsys1'), 'pickedReason', 'reason1'),named_struct('quantity',30, 'articleData', named_struct('subsysNumber', 'subsys2'), 'pickedReason', 'reason2')) from dummy;

阵列的结构（第2列）：

array(named_struct(n1,v1,..,nn,vn),...,named_struct(n1,v1,..,nn,vn))

结果：

hive> select * from test100.test_complex_alter;
OK
test_complex_alter.id   test_complex_alter.items
id1 [{"quantity":20,"articleData":{"subsysNumber":"subsys1"},"pickedReason":"reason1"},{"quantity":30,"articleData":{"subsysNumber":"subsys2"},"pickedReason":"reason2"}]

价：

https://cwiki.apache.org/confluence/display/Hive/LanguageManual+UDF - ＆gt; ＆＃34;复杂类型构造函数＆＃34;