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Posted to user@kylin.apache.org by 热爱大发挥 <38...@qq.com> on 2016/02/18 18:07:06 UTC
question with "build cuboid"
If I have three dimensions "a", "b", "c"
Can you explain
"Build Base Cuboid Data",
"Build N-Dimension Cuboid Data: 3-Dimension",
"Build N-Dimension Cuboid Data: 2-Dimension"
"Build N-Dimension Cuboid Data: 1-Dimension"
"Build N-Dimension Cuboid Data: 0-Dimension"
Each step in the calculation is what?
Re: question with "build cuboid"
Posted by Li Yang <li...@apache.org>.
The actual impl might be slightly different but the below should give you
the logical idea.
Base cuboid calculates "group by (a, b, c)" -- 3-D cuboid should mean
the same
2-D cuboid calculates "group by (a, b) + group by (a, c) + group by (b, c)"
1-D cuboid calculates "group by (a) + group by (b) + group by (c)"
On Fri, Feb 19, 2016 at 10:22 AM, 热爱大发挥 <38...@qq.com> wrote:
> I guess
> "Build N-Dimension Cuboid Data: 3-Dimension" means "group by (a,b,c)?
> "Build N-Dimension Cuboid Data: 2-Dimension" means "group by (a,b) +
> group by (ac) + group by (bc) ??
> "Build N-Dimension Cuboid Data: 1-Dimension" means "group by (a) + group
> by (b) + group by (c) ??
> "Build N-Dimension Cuboid Data: 0-Dimension"
>
>
> ------------------ 原始邮件 ------------------
> *发件人:* "冬瓜"<38...@qq.com>;
> *发送时间:* 2016年2月19日(星期五) 凌晨1:07
> *收件人:* "user"<us...@kylin.apache.org>;
> *主题:* question with "build cuboid"
>
> If I have three dimensions "a", "b", "c"
> Can you explain
>
> "Build Base Cuboid Data",
> "Build N-Dimension Cuboid Data: 3-Dimension",
> "Build N-Dimension Cuboid Data: 2-Dimension"
> "Build N-Dimension Cuboid Data: 1-Dimension"
> "Build N-Dimension Cuboid Data: 0-Dimension"
>
> Each step in the calculation is what?
>
回复：question with "build cuboid"
Posted by 热爱大发挥 <38...@qq.com>.
I guess
"Build N-Dimension Cuboid Data: 3-Dimension" means "group by (a,b,c)?
"Build N-Dimension Cuboid Data: 2-Dimension" means "group by (a,b) + group by (ac) + group by (bc) ??
"Build N-Dimension Cuboid Data: 1-Dimension" means "group by (a) + group by (b) + group by (c) ??
"Build N-Dimension Cuboid Data: 0-Dimension"
------------------ 原始邮件 ------------------
发件人: "冬瓜"<38...@qq.com>;
发送时间: 2016年2月19日(星期五) 凌晨1:07
收件人: "user"<us...@kylin.apache.org>;
主题: question with "build cuboid"
If I have three dimensions "a", "b", "c"
Can you explain
"Build Base Cuboid Data",
"Build N-Dimension Cuboid Data: 3-Dimension",
"Build N-Dimension Cuboid Data: 2-Dimension"
"Build N-Dimension Cuboid Data: 1-Dimension"
"Build N-Dimension Cuboid Data: 0-Dimension"
Each step in the calculation is what?