复合类型构建操作 1. Map类型构建: map 语法: map (key1, value1, key2, value2, …) 说明:根据输入的key和value对构建map类型 举例: hive> Create table lxw_test as select map('100','tom','200','mary') as t from lxw_dual; hive> describe lxw_test; t map<string,string> hive> select t from lxw_test; {"100":"tom","200":"mary"} 2. Struct类型构建: struct 语法: struct(val1, val2, val3, …) 说明:根据输入的参数构建结构体struct类型 举例: hive> create table lxw_test as select struct('tom','mary','tim') as t from lxw_dual; hive> describe lxw_test; t struct<col1:string,col2:string,col3:string> hive> select t from lxw_test; {"col1":"tom","col2":"mary","col3":"tim"} 3.