--- title: "oceanbase.DBA_TAB_HISTOGRAMS - OceanBase 数据库 V4.5.0 | OceanBase 文档中心" description: oceanbase.DBA_TAB_HISTOGRAMS 说明 该视图从 V4.0.0 版本开始引入。 功能描述 展示当前租户下所有表的列的直方图。 字段说明 字段名称 类型 是否可以为 NULL 描述 OWNER varchar(128) NO 直方图所属的用户 TABLE_NAME varchar(128) NO… --- 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 # oceanbase.DBA_TAB_HISTOGRAMS 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/300.system-view-of-sys-tenant/200.dictionary-view-of-sys-tenant/26400.o-dba_tab_histograms-of-sys-tenant.md) #### 说明 该视图从 V4.0.0 版本开始引入。 ## 功能描述 展示当前租户下所有表的列的直方图。 ## 字段说明 | 字段名称 | 类型 | 是否可以为 NULL | 描述 | | --- | --- | --- | --- | | OWNER | varchar(128) | NO | 直方图所属的用户 | | TABLE_NAME | varchar(128) | NO | 直方图所属表名 | | COLUMN_NAME | varchar(128) | NO | 直方图所属列名 | | ENDPOINT_NUMBER | decimal(10,0) | NO | Bucket 累积的频次 | | ENDPOINT_VALUE | decimal(10,0) | NO | Bucket 端点归一化值 | | ENDPOINT_ACTUAL_VALUE | text | NO | Bucket 端点值 | | ENDPOINT_ACTUAL_VALUE_RAW | text | NO | Bucket 端点二进制值 | | ENDPOINT_REPEAT_COUNT | decimal(10,0) | NO | Bucket 端点值的频次 | | SCOPE | varchar(7) | NO | 直方图所属范围 | ## 查询示例 系统租户下，查看本租户的表 `t_subpart` 的表级直方图相关信息。 ```shell obclient [oceanbase]> SELECT * FROM oceanbase.DBA_TAB_HISTOGRAMS WHERE TABLE_NAME='t_subpart'; ``` 查询结果如下： ```shell +-------+------------+-------------+-----------------+----------------+-----------------------+---------------------------+-----------------------+-------+ | OWNER | TABLE_NAME | COLUMN_NAME | ENDPOINT_NUMBER | ENDPOINT_VALUE | ENDPOINT_ACTUAL_VALUE | ENDPOINT_ACTUAL_VALUE_RAW | ENDPOINT_REPEAT_COUNT | SCOPE | +-------+------------+-------------+-----------------+----------------+-----------------------+---------------------------+-----------------------+-------+ | test | t_subpart | c1 | 1 | NULL | 0 | 04053F0000 | 1 | NULL | | test | t_subpart | c1 | 2501 | NULL | 2500 | 04053F00C413 | 1 | NULL | | test | t_subpart | c1 | 5001 | NULL | 5000 | 04053F008827 | 1 | NULL | | test | t_subpart | c1 | 7501 | NULL | 7500 | 04053F00CC3A | 1 | NULL | | test | t_subpart | c1 | 10000 | NULL | 9999 | 04053F008F4E | 1 | NULL | | test | t_subpart | c2 | 10 | NULL | 0 | 04053F0000 | 10 | NULL | | test | t_subpart | c2 | 2510 | NULL | 250 | 04053F00FA01 | 10 | NULL | | test | t_subpart | c2 | 5010 | NULL | 500 | 04053F00F403 | 10 | NULL | | test | t_subpart | c2 | 7510 | NULL | 750 | 04053F00EE05 | 10 | NULL | | test | t_subpart | c2 | 10000 | NULL | 999 | 04053F00E707 | 10 | NULL | | test | t_subpart | c3 | 5 | NULL | 0 | 04053F0000 | 5 | NULL | | test | t_subpart | c3 | 2505 | NULL | 500 | 04053F00F403 | 5 | NULL | | test | t_subpart | c3 | 5005 | NULL | 1000 | 04053F00E807 | 5 | NULL | | test | t_subpart | c3 | 7505 | NULL | 1500 | 04053F00DC0B | 5 | NULL | | test | t_subpart | c3 | 10000 | NULL | 1999 | 04053F00CF0F | 5 | NULL | +-------+------------+-------------+-----------------+----------------+-----------------------+---------------------------+-----------------------+-------+ 15 rows in set ``` ## 相关视图或文档 - 查看 Partition 级的直方图统计信息：[DBA_PART_HISTOGRAMS](https://www.oceanbase.com/docs/common-oceanbase-database-cn-1000000004477479) - 查看 Subpartition 级的直方图统计信息：[DBA_SUBPART_HISTOGRAMS](https://www.oceanbase.com/docs/common-oceanbase-database-cn-1000000004477651) - 查看表级的列统计信息：[DBA_TAB_STATISTICS](https://www.oceanbase.com/docs/common-oceanbase-database-cn-1000000004477519) - 查看 Global 级的列统计信息：[DBA_TAB_COL_STATISTICS](https://www.oceanbase.com/docs/common-oceanbase-database-cn-1000000004477446) - 查看 Partition 级的列统计信息：[DBA_PART_COL_STATISTICS](https://www.oceanbase.com/docs/common-oceanbase-database-cn-1000000004477750) - 查看 Subpartition 级的列统计信息：[DBA_SUBPART_COL_STATISTICS](https://www.oceanbase.com/docs/common-oceanbase-database-cn-1000000004477582) - 查看索引统计信息：[DBA_IND_STATISTICS](https://www.oceanbase.com/docs/common-oceanbase-database-cn-1000000004477487) - 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