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From: =?UTF-8?B?5ZC05pyx5Y2O?= <ikewu83@gmail.com>
Date: Fri, 7 Apr 2017 12:14:39 +0800
Message-ID: <CABQBLK-uLj-5Nd+AOjbp_fRFZhfmwxpALXU6Ba=U=wgEudPWpg@mail.gmail.com>
Subject: Re: Is there any way to retrieve table metadata using select rather
 than show?
To: Lars Volker <lv@cloudera.com>
Cc: user@impala.incubator.apache.org, user@impala.apache.org,
	"dev@impala" <dev@impala.incubator.apache.org>
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archived-at: Fri, 07 Apr 2017 04:14:54 -0000

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Lars=EF=BC=9A

I have checked the code, the feature may involve some changes on optimizer
or analyzer side. It's a big change. I am looking forward to make more
minor contribution, just to experience whole process^_^

2017-04-06 21:20 GMT+08:00 Lars Volker <lv@cloudera.com>:

> Adding support to expose the metadata as tables is tracked in IMPALA-1761
> <https://issues.apache.org/jira/browse/IMPALA-1761>. We would welcome
> your contribution to this.
>
> On Thu, Apr 6, 2017 at 3:16 PM, Jeszy <jeszyb@gmail.com> wrote:
>
>> Hey,
>>
>> that's not possible from within impala. If you go directly to the
>> HMS's backing DB, you can query that.
>> What information are you looking for?
>>
>> Thanks.
>>
>> On Thu, Apr 6, 2017 at 3:02 PM, =E5=90=B4=E6=9C=B1=E5=8D=8E <ikewu83@gma=
il.com> wrote:
>> > Hi guys:
>> >
>> > Currently, we are using "show databases","show tables" or "Describe
>> table"
>> > to retrieve table metadata, but we use such as "select * from metadata=
"
>> to
>> > retrieve, just like RDBMS did^_^
>>
>
>

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