Hive学习之创建、删除、Truncate表

   创建表的语句有两种，分别为：

CREATE [EXTERNAL] TABLE [IF NOT EXISTS] [db_name.]table_name
[(col_name data_type [COMMENT col_comment], ...)]
[COMMENT table_comment]
[PARTITIONED BY (col_name data_type [COMMENT col_comment], ...)]
[CLUSTERED BY (col_name, col_name, ...) [SORTED BY(col_name[ASC|DESC], ...)] INTO num_buckets BUCKETS]
[SKEWED BY (col_name, col_name, ...) ON ([(col_value, col_value, ...), ...|col_value, col_value, ...]) [STORED AS DIRECTORIES]
  [ [ROW FORMAT row_format] [STORED AS file_format]
   | STORED BY 'storage.handler.class.name' [WITH SERDEPROPERTIES (...)]  ]
  [LOCATION hdfs_path]
  [TBLPROPERTIES (property_name=property_value, ...)] 
  [AS select_statement] 

CREATE [EXTERNAL] TABLE [IF NOT EXISTS] [db_name.]table_name
  LIKE existing_table_or_view_name
  [LOCATION hdfs_path];

   表名和列名是大小写无关的，但SerDe和属性名是大小写相关的。表名可以是任何Unicode字符，表和列的注释是用单引号括起来的字符串，TBLPROPER