--- title: "ALL_SUBPART_COL_STATISTICS - OceanBase 数据库 V4.5.0 | OceanBase 文档中心" description: ALL_SUBPART_COL_STATISTICS 说明 该视图从 V3.2.1 版本开始引入。 功能描述 展示当前用户可访问的分区表中二级分区的列统计信息和直方图信息。 功能适用性 该视图仅适用于 OceanBase 数据库 Oracle 模式。 字段说明 字段名称 类型 是否可以为 NULL 描述 OWNER … --- 切换语言 - 中文站 - 简体中文 - International - English - 日本站 - 日本語 文档反馈![](https://mdn.alipayobjects.com/huamei_22khvb/afts/img/A*P8CuR4UJ_FkAAAAAAAAAAAAADiGDAQ/original) OceanBase 数据库分布式版 - V 4.5.0 # ALL_SUBPART_COL_STATISTICS 更新时间：2026-04-01 14:27:05 [编辑](https://github.com/oceanbase/oceanbase-doc/edit/V4.5.0/zh-CN/700.reference/700.system-views/500.system-view-of-oracle-mode/200.dictionary-view-of-oracle-mode/4100.all_subpart_col_statistics-of-oracle-mode.md) #### 说明 该视图从 V3.2.1 版本开始引入。 ## 功能描述 展示当前用户可访问的分区表中二级分区的列统计信息和直方图信息。 #### 功能适用性 该视图仅适用于 OceanBase 数据库 Oracle 模式。 ## 字段说明 | 字段名称 | **类型** | **是否可以为 NULL** | **描述** | | --- | --- | --- | --- | | OWNER | VARCHAR2(128) | NO | 列所属的用户 | | TABLE_NAME | VARCHAR2(128) | NO | 表名 | | SUBPARTITION_NAME | VARCHAR2(128) | NO | 二级分区名 | | COLUMN_NAME | VARCHAR2(128) | NO | 列名 | | NUM_DISTINCT | NUMBER | YES | 列中不同值的数量 | | LOW_VALUE | VARCHAR2(128) | YES | 列的最小值 | | HIGH_VALUE | VARCHAR2(128) | YES | 列的最大值 | | DENSITY | NUMBER | YES | 列的密度 | | NUM_NULLS | NUMBER | YES | 列中 `NULL` 值的数量 | | NUM_BUCKETS | NUMBER | YES | 列直方图中桶的个数 | | SAMPLE_SIZE | NUMBER | YES | 分析时的采样大小 | | LAST_ANALYZED | DATE | YES | 上次分析的时间 | | GLOBAL_STATS | VARCHAR2(3) | YES | - `YES`：表示统计信息已收集 - `NO`：表示统计信息未收集 | | USER_STATS | VARCHAR2(3) | YES | 表示分区统计信息是否是用户设置的 | | NOTES | VARCHAR2(80) | YES | 记录一些额外的属性 | | AVG_COL_LEN | NUMBER | YES | 列的平均长度 | | HISTOGRAM | VARCHAR2(15) | YES | 直方图类型 | ## 查询示例 查看当前用户可访问的分区表中，表 `T_SUBPART` 的二级分区的列统计信息。 ```shell obclient [SYS]> SELECT * FROM SYS.ALL_SUBPART_COL_STATISTICS WHERE TABLE_NAME='T_SUBPART'; ``` 查询结果如下： ```shell +-------+------------+-------------------+-------------+--------------+-----------+------------+-----------------------+-----------+-------------+-------------+---------------+--------------+------------+-------+-------------+-----------+ | OWNER | TABLE_NAME | SUBPARTITION_NAME | COLUMN_NAME | NUM_DISTINCT | LOW_VALUE | HIGH_VALUE | DENSITY | NUM_NULLS | NUM_BUCKETS | SAMPLE_SIZE | LAST_ANALYZED | GLOBAL_STATS | USER_STATS | NOTES | AVG_COL_LEN | HISTOGRAM | +-------+------------+-------------------+-------------+--------------+-----------+------------+-----------------------+-----------+-------------+-------------+---------------+--------------+------------+-------+-------------+-----------+ | SYS | T_SUBPART | P2SSP2 | C1 | 795 | 3 | 9972 | .0012578616352201257 | 0 | 5 | 830 | 17-MAR-25 | NO | NO | NULL | 20 | HYBRID | | SYS | T_SUBPART | P2SSP1 | C1 | 1125 | 1004 | 9995 | .00088888888888888893 | 0 | 5 | 1125 | 17-MAR-25 | NO | NO | NULL | 20 | HYBRID | | SYS | T_SUBPART | P2SSP0 | C1 | 527 | 1042 | 9963 | .0018975332068311196 | 0 | 5 | 549 | 17-MAR-25 | NO | NO | NULL | 20 | HYBRID | | SYS | T_SUBPART | P1SSP2 | C1 | 1168 | 1005 | 9992 | .00085616438356164379 | 0 | 5 | 1130 | 17-MAR-25 | NO | NO | NULL | 20 | HYBRID | | SYS | T_SUBPART | P1SSP1 | C1 | 2804 | 0 | 9997 | .0003566333808844508 | 0 | 5 | 2714 | 17-MAR-25 | NO | NO | NULL | 20 | HYBRID | | SYS | T_SUBPART | P1SSP0 | C1 | 1119 | 1002 | 9999 | .00089365504915102768 | 0 | 5 | 1122 | 17-MAR-25 | NO | NO | NULL | 20 | HYBRID | | SYS | T_SUBPART | P0SSP2 | C1 | 575 | 1014 | 9986 | .0017391304347826088 | 0 | 5 | 560 | 17-MAR-25 | NO | NO | NULL | 20 | HYBRID | | SYS | T_SUBPART | P0SSP1 | C1 | 1144 | 1000 | 9998 | .00087412587412587413 | 0 | 5 | 1141 | 17-MAR-25 | NO | NO | NULL | 20 | HYBRID | | SYS | T_SUBPART | P0SSP0 | C1 | 844 | 2 | 9990 | .0011848341232227489 | 0 | 5 | 829 | 17-MAR-25 | NO | NO | NULL | 20 | HYBRID | | SYS | T_SUBPART | P2SSP2 | C2 | 251 | 3 | 992 | .0039840637450199202 | 0 | 5 | 830 | 17-MAR-25 | NO | NO | NULL | 20 | HYBRID | | SYS | T_SUBPART | P2SSP1 | C2 | 473 | 1 | 998 | .0021141649048625794 | 0 | 5 | 1125 | 17-MAR-25 | NO | NO | NULL | 20 | HYBRID | | SYS | T_SUBPART | P2SSP0 | C2 | 228 | 2 | 999 | .0043859649122807015 | 0 | 5 | 549 | 17-MAR-25 | NO | NO | NULL | 20 | HYBRID | | SYS | T_SUBPART | P1SSP2 | C2 | 251 | 3 | 992 | .0039840637450199202 | 0 | 5 | 1130 | 17-MAR-25 | NO | NO | NULL | 20 | HYBRID | | SYS | T_SUBPART | P1SSP1 | C2 | 517 | 0 | 998 | .0019342359767891683 | 0 | 5 | 2714 | 17-MAR-25 | NO | NO | NULL | 20 | HYBRID | | SYS | T_SUBPART | P1SSP0 | C2 | 248 | 2 | 999 | .0040322580645161289 | 0 | 5 | 1122 | 17-MAR-25 | NO | NO | NULL | 20 | HYBRID | | SYS | T_SUBPART | P0SSP2 | C2 | 235 | 3 | 992 | .0042553191489361703 | 0 | 5 | 560 | 17-MAR-25 | NO | NO | NULL | 20 | HYBRID | | SYS | T_SUBPART | P0SSP1 | C2 | 482 | 0 | 998 | .0020746887966804979 | 0 | 5 | 1141 | 17-MAR-25 | NO | NO | NULL | 20 | HYBRID | | SYS | T_SUBPART | P0SSP0 | C2 | 248 | 2 | 999 | .0040322580645161289 | 0 | 5 | 829 | 17-MAR-25 | NO | NO | NULL | 20 | HYBRID | | SYS | T_SUBPART | P2SSP2 | C3 | 445 | 3 | 1987 | .0022471910112359553 | 0 | 5 | 830 | 17-MAR-25 | NO | NO | NULL | 20 | HYBRID | | SYS | T_SUBPART | P2SSP1 | C3 | 725 | 1 | 1998 | .0013793103448275861 | 0 | 5 | 1125 | 17-MAR-25 | NO | NO | NULL | 20 | HYBRID | | SYS | T_SUBPART | P2SSP0 | C3 | 339 | 2 | 1999 | .0029498525073746312 | 0 | 5 | 549 | 17-MAR-25 | NO | NO | NULL | 20 | HYBRID | | SYS | T_SUBPART | P1SSP2 | C3 | 479 | 3 | 1992 | .0020876826722338203 | 0 | 5 | 1130 | 17-MAR-25 | NO | NO | NULL | 20 | HYBRID | | SYS | T_SUBPART | P1SSP1 | C3 | 980 | 0 | 1998 | .0010204081632653062 | 0 | 5 | 2714 | 17-MAR-25 | NO | NO | NULL | 20 | HYBRID | | SYS | T_SUBPART | P1SSP0 | C3 | 465 | 2 | 1999 | .0021505376344086021 | 0 | 5 | 1122 | 17-MAR-25 | NO | NO | NULL | 20 | HYBRID | | SYS | T_SUBPART | P0SSP2 | C3 | 372 | 3 | 1991 | .0026881720430107529 | 0 | 5 | 560 | 17-MAR-25 | NO | NO | NULL | 20 | HYBRID | | SYS | T_SUBPART | P0SSP1 | C3 | 723 | 0 | 1998 | .0013831258644536654 | 0 | 5 | 1141 | 17-MAR-25 | NO | NO | NULL | 20 | HYBRID | | SYS | T_SUBPART | P0SSP0 | C3 | 434 | 2 | 1999 | .002304147465437788 | 0 | 5 | 829 | 17-MAR-25 | NO | NO | NULL | 20 | HYBRID | +-------+------------+-------------------+-------------+--------------+-----------+------------+-----------------------+-----------+-------------+-------------+---------------+--------------+------------+-------+-------------+-----------+ 27 rows in set ``` ## 相关视图或文档 - 查看本租户下所有分区表的二级分区的列统计信息：[DBA_SUBPART_COL_STATISTICS](https://www.oceanbase.com/docs/common-oceanbase-database-cn-1000000004477290) - 查看当前用户拥有的分区表的二级分区的列统计信息：[USER_SUBPART_COL_STATISTICS](https://www.oceanbase.com/docs/common-oceanbase-database-cn-1000000004477423) - 表级的列统计信息，查询以下视图： - [ALL_TAB_STATISTICS](https://www.oceanbase.com/docs/common-oceanbase-database-cn-1000000004477418) - [DBA_TAB_STATISTICS](https://www.oceanbase.com/docs/common-oceanbase-database-cn-1000000004477397) - [USER_TAB_STATISTICS](https://www.oceanbase.com/docs/common-oceanbase-database-cn-1000000004477325) - Global 级的列统计信息，查询以下视图： - [ALL_TAB_COL_STATISTICS](https://www.oceanbase.com/docs/common-oceanbase-database-cn-1000000004477281) - [DBA_TAB_COL_STATISTICS](https://www.oceanbase.com/docs/common-oceanbase-database-cn-1000000004477143) - [USER_TAB_COL_STATISTICS](https://www.oceanbase.com/docs/common-oceanbase-database-cn-1000000004477308) - Partition 级的列统计信息，查询以下视图： - [ALL_PART_COL_STATISTICS](https://www.oceanbase.com/docs/common-oceanbase-database-cn-1000000004477115) - [DBA_PART_COL_STATISTICS](https://www.oceanbase.com/docs/common-oceanbase-database-cn-1000000004477419) - [USER_PART_COL_STATISTICS](https://www.oceanbase.com/docs/common-oceanbase-database-cn-1000000004477195) - 表级的直方图统计信息，查询以下视图： - [ALL_TAB_HISTOGRAMS](https://www.oceanbase.com/docs/common-oceanbase-database-cn-1000000004477407) - [DBA_TAB_HISTOGRAMS](https://www.oceanbase.com/docs/common-oceanbase-database-cn-1000000004477200) - [USER_TAB_HISTOGRAMS](https://www.oceanbase.com/docs/common-oceanbase-database-cn-1000000004477400) - Partition 级的直方图统计信息，查询以下视图： - [ALL_PART_HISTOGRAMS](https://www.oceanbase.com/docs/common-oceanbase-database-cn-1000000004477319) - [DBA_PART_HISTOGRAMS](https://www.oceanbase.com/docs/common-oceanbase-database-cn-1000000004477374) - [USER_PART_HISTOGRAMS](https://www.oceanbase.com/docs/common-oceanbase-database-cn-1000000004477130) - Subpartition 级的直方图统计信息，查询以下视图： - [ALL_SUBPART_HISTOGRAMS](https://www.oceanbase.com/docs/common-oceanbase-database-cn-1000000004477146) - [DBA_SUBPART_HISTOGRAMS](https://www.oceanbase.com/docs/common-oceanbase-database-cn-1000000004477359) - [USER_SUBPART_HISTOGRAMS](https://www.oceanbase.com/docs/common-oceanbase-database-cn-1000000004477255) - 索引统计信息，查询以下视图： - [ALL_IND_STATISTICS](https://www.oceanbase.com/docs/common-oceanbase-database-cn-1000000004477357) - [DBA_IND_STATISTICS](https://www.oceanbase.com/docs/common-oceanbase-database-cn-1000000004477229) - [USER_IND_STATISTICS](https://www.oceanbase.com/docs/common-oceanbase-database-cn-1000000004477370) - 有关如何收集统计信息，参见以下文档： - [手动收集统计信息](https://www.oceanbase.com/docs/common-oceanbase-database-cn-1000000004481059) - [自动收集统计信息](https://www.oceanbase.com/docs/common-oceanbase-database-cn-1000000004481061) 上一篇 下一篇 ![有帮助](https://gw.alipayobjects.com/mdn/ob_asset/afts/img/A*y6ocSqN8cqsAAAAAAAAAAAAAARQnAQ)![无帮助](https://gw.alipayobjects.com/mdn/ob_asset/afts/img/A*BG9IQJyLHF8AAAAAAAAAAAAAARQnAQ)![反馈](https://gw.alipayobjects.com/mdn/ob_asset/afts/img/A*eTWdQKCRKHwAAAAAAAAAAAAAARQnAQ)[AI](https://www.oceanbase.com/obi) 咨询热线