Hive 如何转换蜂窝表
有人能帮我理解一下,如何旋转蜂巢桌吗 我有一张这样的蜂巢桌:Hive 如何转换蜂窝表,hive,pivot,Hive,Pivot,有人能帮我理解一下,如何旋转蜂巢桌吗 我有一张这样的蜂巢桌: ColumnA ColumnB Column C Date Price A1 B1 C1 20171001 100 A1 B2 C2 20171001 50 A2 B2 C2 20171002 75 A3 B1
ColumnA ColumnB Column C Date Price
A1 B1 C1 20171001 100
A1 B2 C2 20171001 50
A2 B2 C2 20171002 75
A3 B1 C2 20171002 10
我想像这样旋转上表:
ColumnA ColumnB Column C 20171001 20171002 Total
A1 B1 C1 100 100
A1 B2 C2 50 50
A2 B2 C1 75 75
A3 B1 C2 10 10
试试这个
select
ColumnA,
ColumnB,
ColumnC,
MAX ( CASE
WHEN Date_ = '20171001'
THEN Price
END ) price_20171001,
MAX ( CASE
WHEN Date_ = '20171002'
THEN Price
END ) price_20171002 ,
Max(Price) Total
FROM
Yourtable
GROUP BY
ColumnA,
ColumnB,
ColumnC
ORDER BY
ColumnA;
注意:由于日期
是无效列,我使用了日期
试试这个
select
ColumnA,
ColumnB,
ColumnC,
MAX ( CASE
WHEN Date_ = '20171001'
THEN Price
END ) price_20171001,
MAX ( CASE
WHEN Date_ = '20171002'
THEN Price
END ) price_20171002 ,
Max(Price) Total
FROM
Yourtable
GROUP BY
ColumnA,
ColumnB,
ColumnC
ORDER BY
ColumnA;
注意:由于日期
是无效列,因此我使用了日期