# ROWID类型函数
- rowid_tableoid(rowid) 描述：获取rowid的table_oid值。
  参数：rowid
  返回值类型：oid
  示例：
  ```
  gaussdb=# CREATE DATABASE ora_test DBCOMPATIBILITY='ORA';
  CREATE DATABASE
  gaussdb=# \c ora_test
  Non-SSL connection (SSL connection is recommended when requiring high-security)
  You are now connected to database "ora" as user "$user".
  ora_test=# SELECT rowid_tableoid('AAAAAAAAAP//BBBBBAAAAAAAAAAAC');
   rowid_tableoid 
  ----------------
       1090785344
  (1 row)
  ora_test=# \c postgres
  Non-SSL connection (SSL connection is recommended when requiring high-security)
  You are now connected to database "postgres" as user "$user".
  gaussdb=# DROP DATABASE ora_test;
  DROP DATABASE
  ```
  

- rowid_sequence(rowid) 描述：获取rowid的row_no值。
  参数：rowid
  返回值类型：int8
  示例：
  ```
  gaussdb=# CREATE DATABASE ora_test DBCOMPATIBILITY='ORA';
  CREATE DATABASE
  gaussdb=# \c ora_test
  Non-SSL connection (SSL connection is recommended when requiring high-security)
  You are now connected to database "ora" as user "$user".
  ora_test=# SELECT rowid_sequence('AAAAAAAAAP//BBBBBAAAAAAAAAAAC');
   rowid_sequence 
  ----------------
                2
  (1 row)
  ora_test=# \c postgres
  Non-SSL connection (SSL connection is recommended when requiring high-security)
  You are now connected to database "postgres" as user "$user".
  gaussdb=# DROP DATABASE ora_test;
  DROP DATABASE
  ```
  
- rowid_nodeid(rowid) 描述：获取rowid的node_slice值。
  参数：rowid
  返回值类型：int2
  示例：
  ```
  gaussdb=# CREATE DATABASE ora_test DBCOMPATIBILITY='ORA';
  CREATE DATABASE
  gaussdb=# \c ora_test
  Non-SSL connection (SSL connection is recommended when requiring high-security)
  You are now connected to database "ora" as user "$user".
  ora_test=# SELECT rowid_nodeid('AAAAAAAAAP//BBBBBAAAAAAAAAAAC');
   rowid_nodeid 
  --------------
              0
  (1 row)
  ora_test=# \c postgres
  Non-SSL connection (SSL connection is recommended when requiring high-security)
  You are now connected to database "postgres" as user "$user".
  gaussdb=# DROP DATABASE ora_test;
  DROP DATABASE
  ```
  
- rowid_hashbucketid(rowid) 描述：获取rowid的bucket_id值。
  参数：rowid
  返回值类型：int2
  示例：
  ```
  gaussdb=# CREATE DATABASE ora_test DBCOMPATIBILITY='ORA';
  CREATE DATABASE
  gaussdb=# \c ora_test
  Non-SSL connection (SSL connection is recommended when requiring high-security)
  You are now connected to database "ora" as user "$user".
  ora_test=# SELECT rowid_hashbucketid('AAAAAAAAAP//BBBBBAAAAAAAAAAAC');
   rowid_hashbucketid 
  --------------------
                   -1
  (1 row)
  ora_test=# \c postgres
  Non-SSL connection (SSL connection is recommended when requiring high-security)
  You are now connected to database "postgres" as user "$user".
  gaussdb=# DROP DATABASE ora_test;
  DROP DATABASE
  ```