2 July 2013 08:50
> To: user@hive.apache.org
> Subject: Re: Override COUNT() function
>
> MetadataOnlyOptimizer changes GBY on partition columns to simple TableScan
> with one line dummy.
>
> I think similar things can be done with stats.
>
> 2013/6/28 Peter Marron :
>> Hi,
ssage-
From: Navis류승우 [mailto:navis@nexr.com]
Sent: 02 July 2013 08:50
To: user@hive.apache.org
Subject: Re: Override COUNT() function
MetadataOnlyOptimizer changes GBY on partition columns to simple TableScan with
one line dummy.
I think similar things can be done with stats.
2013/6/28
MetadataOnlyOptimizer changes GBY on partition columns to simple
TableScan with one line dummy.
I think similar things can be done with stats.
2013/6/28 Peter Marron :
> Hi,
>
>
>
> I feel sure that someone has asked for this before, but here goes…
>
>
>
> In the case where I have the query
>
>
>
Hi,
I feel sure that someone has asked for this before, but here goes...
In the case where I have the query
SELECT COUNT(*) FROM table;
There are many cases where I can determine the count immediately.
(For example if I have run something like:
ANALYZE TABLE tablename [PARTITIO
