hive的帮助命令: [hadoop@master tmp]$ hive -help usage: hive -d,--define <key=value> Variable substitution to apply to Hive commands. e.g. -d A=B or --define A=B --database <databasename> Specify the database to use -e <quoted-query-string> SQ…
[hadoop@hadoop hive-0.13.1]$ bin/hive -help usage: hive -d,--define <key=value> Variable subsitution to apply to hive commands. e.g. -d A=B or --define A=B --database <databasename> Specify the database to use -e <quoted-query-string> SQ…
test_a 表 id value 1 java 2 python 3 c++ test_b 表 id value 1 java 2 go 3 php 4 c++ 1. join 计算的是笛卡尔积,不推荐使用 select * from test_a join test_b on test_a.value = test_b.value; 查询结果: java java c++ c++ 2. left outer join & right outer join 注意:最好将小表放在 左 | 右 s…
参考:https://www.cnblogs.com/jonban/p/10779938.html Hive 启动:hive 退出:hive>quit; show databases; use analysis; show tables; desc tab_name; --查看表的结构及表的路径 show partitions fact_measured_cft_hive ;展示表分区 fact_measured_cft_hive show create table fact_five_dat…
