hive批量执行sql命令及使用小技巧

时间:2021-06-12 23:21:03

root@hadoop-senior 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>         SQL from command line
-f  <filename>               SQL from files
-H,--help                  Print help information
-h  <hostname>              connecting to Hive Server on remote host
  --hiveconf <property=value>            Use value for given property
  --hivevar <key=value>         Variable subsitution to apply to hive
                  commands. e.g. --hivevar A=B
-i <filename>             Initialization SQL file
-p <port>                connecting to Hive Server on port number
-S,--silent               Silent mode in interactive shell
-v,--verbose              Verbose mode (echo executed SQL to the
                  console)

1.* bin/hive -e <quoted-query-string>
eg:
bin/hive -e "select * from db_hive.student ;"

2.* bin/hive -f <filename>
eg:
$ touch hivef.sql
select * from db_hive.student ;
$ bin/hive -f /opt/datas/hivef.sql
$ bin/hive -f /opt/datas/hivef.sql > /opt/datas/hivef-res.txt

3.* bin/hive -i <filename>
与用户udf相互使用

4。在hive cli命令窗口中如何查看hdfs文件系统
hive (default)> dfs -ls / ;

5.在hive cli命令窗口中如何查看本地文件系统
hive (default)> !ls /opt/datas ;