Hive數據倉庫可以通過多種方式導入數據,以下是一些常見的方法:
load data [local] inpath 'filepath' overwrite into table tablename [partition (partcol1=val1, partcol2=val2, ...)]
。load data local inpath '/data/customer.txt' into table test.customer;
。load data inpath '/user/hive/warehouse/student.txt' into table test.student;
。insert into table tablename select * from another_table;
。insert overwrite table tablename partition(month='2019-07') select id, name from student where month='2019-09';
。create external table if not exists my_table (id int, name string) row format delimited fields terminated by '\t' location 'hdfs://path/to/data';
。通過上述方法,可以根據具體需求選擇合適的數據導入方式,確保數據的準確性和高效性。