explain should give meaningful column names
-------------------------------------------
Key: HIVE-153
URL: https://issues.apache.org/jira/browse/HIVE-153
Project: Hadoop Hive
Issue Type: Improvement
Components: Query Processor
Reporter: Zheng Shao
Currently explain uses numbers like "1" to represent the columns.
It will be much better to print out the real name of the columns.
hive> explain FROM table a SELECT a.country as b, count(1) as c WHERE
a.ds='2008-12-09' GROUP BY a.country;
...
Select Operator
expressions:
expr: country
type: string
expr: ds
type: string
Filter Operator
predicate:
expr: (1 = '2008-12-09')
type: boolean
Reduce Output Operator
key expressions:
expr: 0
type: string
sort order: +
Map-reduce partition columns:
expr: rand()
type: double
tag: -1
value expressions:
expr: 1
type: int
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
