mysql - 如何漂亮地打印 Hive 输出

Question

如何让 Hive 打印出格式良好的结果，包括列名和令人愉快的空格，例如 mysql？例如:

$ hive -f performanceStatistics.hql
...
Kill Command = /usr/lib/hadoop/bin/hadoop job  -kill job_201306211023_1053
Hadoop job information for Stage-1: number of mappers: 8; number of reducers: 1
2013-09-04 17:30:56,092 Stage-1 map = 0%,  reduce = 0%
2013-09-04 17:31:03,132 Stage-1 map = 25%,  reduce = 0%, Cumulative CPU 13.87 sec
...
MapReduce Total cumulative CPU time: 2 minutes 5 seconds 260 msec
Ended Job = job_201306211023_1053
MapReduce Jobs Launched:
Job 0: Map: 8  Reduce: 1   Cumulative CPU: 125.26 sec   HDFS Read: 1568029694 HDFS Write: 93 SUCCESS
Total MapReduce CPU Time Spent: 2 minutes 5 seconds 260 msec
OK
19.866045211878546  0.023310810810810812    10  0   824821  25  1684.478659112734   0.16516737901191694
Time taken: 34.324 seconds

如何获得列名和良好间距的结果？我还希望在 PostgreSQL 中有像 mysql\G 或\x 这样的扩展 View 。

Answer 1

使用

set hive.cli.print.header=true;

打印列名 [1]。

至于间距，输出已经用制表符分隔了，所以你如何进一步处理它取决于你。

[1] https://cwiki.apache.org/confluence/display/Hive/Configuration+Properties#ConfigurationProperties-CommandLineInterface