tencent cloud

[root@10 ~]# su hadoop
[hadoop@10 root]$ cd /usr/local/service/hive

vim test.data

{"name":"Mary","age":12,"course":[{"name":"math","location":"b208"},{"name":"english","location":"b702"}],"grade":[99,98,95]}
{"name":"Bob","age":20,"course":[{"name":"music","location":"b108"},{"name":"history","location":"b711"}],"grade":[91,92,93]}

hadoop fs -put ./test.data /

[hadoop@10 hive]$ hive

hive> CREATE TABLE test (name string, age int, course array<map<string,string>>, grade array<int>) ROW FORMAT SERDE 'org.apache.hive.hcatalog.data.JsonSerDe' STORED AS TEXTFILE;

hive>LOAD DATA INPATH '/test.data' into table test;

hive> select * from test;
OK
Mary	12	[{"name":"math","location":"b208"},{"name":"english","location":"b702"}]    [99,98,95]
Bob	20	[{"name":"music","location":"b108"},{"name":"history","location":"b711"}]   [91,92,93]
Time taken: 0.153 seconds, Fetched: 2 row(s)

hive> select grade[0] from test;
OK
99
91
Time taken: 0.374 seconds, Fetched: 2 row(s)

hive> select course[0]['name'], course[0]['location'] from test;
OK
math	b208
music	b108
Time taken: 0.162 seconds, Fetched: 2 row(s)