HIVE中join、semi join、outer join舉例詳解

時間 2019-11-17

標籤 hive join semi outer 舉例詳解欄目 Hadoop 简体版

原文原文鏈接

舉例子： ui

hive> select * from zz0;
111111
222222
888888
hive> select * from zz1;
111111
333333
444444
888888 spa

hive> select * from zz0 join zz1 on zz0.uid = zz1.uid;
111111 111111
888888 888888
hive> select * from zz0 left outer join zz1 on zz0.uid = zz1.uid;
111111 111111
222222 NULL
888888 888888
hive> select * from zz0 right outer join zz1 on zz0.uid = zz1.uid;
NULL
111111 111111
NULL    333333
NULL    444444
888888 888888
hive> select * from zz0 full outer join zz1 on zz0.uid = zz1.uid;
NULL
111111 111111
222222 NULL
NULL    333333
NULL    444444
888888 888888
hive> select * from zz0 left semi join zz1 on zz0.uid = zz1.uid;
111111 111111
888888 888888 select

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