07_Hive的基本命令_Insert命令

1.将查询结果插入Hive表语法结构:

1.1.基本模式插入:

INSERT OVERWRITE TABLE tablename1 [PARTITION (partcol1=val1, partcol2=val2 ...)] select_statement1 FROM from_statement　

1.2.多插入模式:

　　FROM from_statement

　　INSERT OVERWRITE TABLE tablename1 [PARTITION (partcol1=val1, partcol2=val2 ...)] select_statement1

　　[INSERT OVERWRITE TABLE tablename2 [PARTITION ...] select_statement2] ...

1.3.自动分区模式:

INSERT OVERWRITE TABLE tablename PARTITION (partcol1[=val1], partcol2[=val2] ...) select_statement FROM from_statement

2.导出表结构:

方式1：查询结果导入到一张新的Hive表中：create table t_temp as select * from t_test;　

方式2：查询结果导入到一张已存在的Hive表中：insert into table t_temp select * from t_p;

2.1.导出数据到本地： INSERT OVERWRITE [LOCAL] DIRECTORY directory1 SELECT ... FROM ...

2.2.导出数据到HDFS：