文章目录
显示分区
添加分区
| ALTER TABLE table_name ADD [IF NOT EXISTS] PARTITION partition_spec [LOCATION 'location1'] partition_spec [LOCATION 'location2'] ...; partition_spec: : (partition_column = partition_col_value, partition_column = partition_col_value, ...) ALTER TABLE iteblog ADD PARTITION (dt='2008-08-08') location '/path/to/us/part080808'; ALTER TABLE iteblog ADD PARTITION (dt='2008-08-08', country='us') location '/path/to/us/part080808'; ALTER TABLE iteblog ADD PARTITION (dt='2008-08-08', country='us') location '/path/to/us/part080808' PARTITION (dt='2008-08-09', country='us') location '/path/to/us/part080809'; |
删除分区
| ALTER TABLE table_name DROP [IF EXISTS] PARTITION partition_spec[, PARTITION partition_spec, ...] ALTER TABLE iteblog DROP PARTITION (dt='2008-08-08', country='us'); |
修改分区
| ALTER TABLE iteblog PARTITION (dt='2008-08-08') SET LOCATION "new location"; ALTER TABLE iteblog PARTITION (dt='2008-08-08') RENAME TO PARTITION (dt='20080808'); |
添加列
| ALTER TABLE iteblog ADD COLUMNS (col_name STRING); |
修改列
| CREATE TABLE iteblog (a int, b int, c int); // will change column a's name to a1 ALTER TABLE iteblog CHANGE a a1 INT; // will change column a's name to a1, a's data type to string, and put it after column b. The new table's structure is: b int, a1 string, c int ALTER TABLE iteblog CHANGE a a1 STRING AFTER b; // will change column b's name to b1, and put it as the first column. The new table's structure is: b1 int, a string, c int ALTER TABLE iteblog CHANGE b b1 INT FIRST; |
修改表属性
- alter table iteblog set TBLPROPERTIES ('EXTERNAL'='TRUE');
- alter table iteblog set TBLPROPERTIES ('EXTERNAL'='FALSE');
表的重命名
| ALTER TABLE iteblog RENAME TO new_table_name |
备注:本文转载自过往记忆(https://www.iteblog.com/)
本文原链接: 【Hive常用语句】(https://www.iteblog.com/archives/1537.html)