Hive_常用交互命令

Posted 2020-11-30 tunan-ki

[atguigu@hadoop102 hive]$ 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
    --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
 -S,--silent                      Silent mode in interactive shell
 -v,--verbose                     Verbose mode (echo executed SQL to the console

1．“-e”不进入hive的交互窗口执行sql语句

[atguigu@hadoop102 hive]$ bin/hive -e "select id from student;"

2．“-f”执行脚本中sql语句

         （1）在/opt/module/datas目录下创建hivef.sql文件

[atguigu@hadoop102 datas]$ touch hivef.sql

              文件中写入正确的sql语句

              select *from student;

         （2）执行文件中的sql语句

[atguigu@hadoop102 hive]$ bin/hive -f /opt/module/datas/hivef.sql

（3）执行文件中的sql语句并将结果写入文件中

[atguigu@hadoop102 hive]$ bin/hive -f /opt/module/datas/hivef.sql  > /opt/module/datas/hive_result.txt