last_name: STRING>);-- Insert data into the tableINSERTINTOmy_tableVALUES(1,named_struct('first_name','John','last_name','Doe'));-- Convert the struct to a stringSELECTid,concat_ws(',',explode(map('first_name',name.first_name,'last_name',name.last_name)))ASname_string...
group_id string, mem_a struct<name:string, age:int, gender:string>, mem_b struct<name:string, age:int, gender:string> ) row format delimited fields terminated by ' ' collection items terminated by ','; -- 加载数据 load data local inpath '/opt/hive_data/infos' into table groups; --...
create tabletb_struct(id int,name string,introduce struct<toON:string,toIn:string,toAll:string>)row format delimited fields terminated by'\t'collection items terminated by','lines terminated by'\n'storedastextfile; 创建成功: 使用【desc tableName】查看即可。 2、创建数据【structInfo.txt】 1 王...
CREATETABLEcomplex(c1ARRAY<INT>,c2MAP<STRING,INT>,c3STRUCT,c4UNIONTYPE<STRING,INT>); 通过下面的SELECT语句查询相应的数据: 代码语言:javascript 复制 SELECTc1[0],c2['b'],c3.c,c4FROMcomplex 结果类似: 代码语言:javascript 复制 121.0{1:63}...
创建表和插入数据的sql语句,map类型的数据插入用到了str_to_map和map, struct类型的数据插入用到了named_struct. --create table--创建表语句请在dbeaver中运行。如果在dbvisualizer中,会把<street:string, city:string>中的冒号string当成参数droptablejoe.type_complex01;createtableifnotexistsjoe.type_complex01...
I want to copy data from Table-A to Table-B and transform field1 from array of struct to array of string where the string is the val1 property of struct in table-A and ignore val2. Table-A: field1: array<struct<val1: str, val2: int>> sample data: [{val1: "abc", va...
struct_type :结构体 union_type :联合体 一、primitive_type原始类型 以下是hive的原始数据类型及格式 类型 描述 示例 TINYINT 一字节整数, -128 ~ 127 12 SMALLINT 二字节整数,-32768 ~ 32767 255 INT/INTEGER 4字节整数 -2,147,483,648 ~ 2,147,483,647 2555 ...
context_ngrams(array<array<string>>, array<string>, int K, int pf) 返回结果: 使用n-gram模型,通过指定array<string>,提取前K个上下文文本;pf越大,精度越高,同时消耗的内存资源也更大 返回类型: array<struct<string,double>> select context_ngrams(array(array('from','a'),array('from','a'),...
create table test( name string, friends array<string>, children map<string, int>, address struct<street:string, city:string> ) row format delimited fields terminated by ',' collection items terminated by '_' map keys terminated by ':' lines terminated by '\n'; 字段解释: ...
key必须为原始类型，value可以任意类型map(‘a’,1,’b’,2)STRUCT字段集合,类型可以不同struct(‘1...