了解如何对表进行分区

Question

有什么方法可以查明，是否通过Oracle中的哈希，范围或列表进行表分区？ 我在元数据表中找不到这样的信息。

感谢您的帮助。

Answer 1

您还没有足够的元数据表搜索。

Connected to Oracle Database 12c Enterprise Edition Release 12.2.0.1.0 
Connected as xxx@yyy 

SQL> select owner, table_name, partitioning_type, subpartitioning_type 
SQL> from all_part_tables 
SQL> where owner = 'SYS' 
SQL>  and rownum <= 10 
SQL> ; 

OWNER                   TABLE_NAME                  PARTITIONING_TYPE SUBPARTITIONING_TYPE 
-------------------------------------------------------------------------------- -------------------------------------------------------------------------------- ----------------- -------------------- 
SYS                    AQ$_SUBSCRIBER_LWM                HASH    NONE 
SYS                    WRH$_FILESTATXS                 RANGE    NONE 
SYS                    WRH$_SQLSTAT                  RANGE    NONE 
SYS                    WRH$_SYSTEM_EVENT                RANGE    NONE 
SYS                    WRH$_WAITSTAT                 RANGE    NONE 
SYS                    WRH$_LATCH                  RANGE    NONE 
SYS                    WRH$_LATCH_CHILDREN                RANGE    NONE 
SYS                    WRH$_LATCH_PARENT                RANGE    NONE 
SYS                    WRH$_LATCH_MISSES_SUMMARY              RANGE    NONE 
SYS                    WRH$_EVENT_HISTOGRAM                RANGE    NONE 
10 rows selected 

SQL> 

你应该对使用user_part_tables代替all_part_tables，然后请忽略从where子句owner = 'SYS'谓词更好。