参考：
https://cwiki.apache.org/confluence/display/Hive/LanguageManual+DDL#LanguageManualDDL-CreateTableCreate/Drop/TruncateTable 

要点：
内容目录：
Create/Drop/Truncate Table：

Create Table
    Managed and External Tables
    Storage Formats
    Row Formats & SerDe
    Partitioned Tables
    External Tables
    Create Table As Select (CTAS)
    Create Table Like
    Bucketed Sorted Tables
    Skewed Tables
    Temporary Tables
    Transactional Tables
    Constraints
Drop Table
Truncate Table