You are viewing a plain text version of this content. The canonical link for it is here.
Posted to dev@doris.apache.org by ling miao <li...@apache.org> on 2021/08/03 13:36:55 UTC
[Proposal] Collect richer statistical information
Doris's current statistics are only inaccurate table rows and table size.
Due to the lack of some more accurate column statistics, the Doris query
plan cannot evaluate and select a better plan. Also the current statistical
information is not a complete structure.
I propose to add a statistical information collection module in the query
layer. Mainly responsible for the collection, storage, use and other
functions of statistical information, so as to assist the optimizer to
obtain better query planning.
Ling Miao
Re:Re: [Proposal] Collect richer statistical information
Posted by 陈明雨 <mo...@163.com>.
+1
--
此致！Best Regards
陈明雨 Mingyu Chen
Email:
chenmingyu@apache.org
在 2021-08-03 21:52:53，"ling miao" <li...@apache.org> 写道：
>Add the issue[1] of this proposal.
>
>Ling Miao
>
>1. https://github.com/apache/incubator-doris/issues/6370
>
>
>ling miao <li...@apache.org> 于2021年8月3日周二 下午9:36写道：
>
>> Doris's current statistics are only inaccurate table rows and table size.
>> Due to the lack of some more accurate column statistics, the Doris query
>> plan cannot evaluate and select a better plan. Also the current statistical
>> information is not a complete structure.
>>
>> I propose to add a statistical information collection module in the query
>> layer. Mainly responsible for the collection, storage, use and other
>> functions of statistical information, so as to assist the optimizer to
>> obtain better query planning.
>>
>> Ling Miao
>>
Re: [Proposal] Collect richer statistical information
Posted by ling miao <li...@apache.org>.
Add the issue[1] of this proposal.
Ling Miao
1. https://github.com/apache/incubator-doris/issues/6370
ling miao <li...@apache.org> 于2021年8月3日周二 下午9:36写道：
> Doris's current statistics are only inaccurate table rows and table size.
> Due to the lack of some more accurate column statistics, the Doris query
> plan cannot evaluate and select a better plan. Also the current statistical
> information is not a complete structure.
>
> I propose to add a statistical information collection module in the query
> layer. Mainly responsible for the collection, storage, use and other
> functions of statistical information, so as to assist the optimizer to
> obtain better query planning.
>
> Ling Miao
>