Oracle教程 2023-02-23

Oracle 视图 ALL_IND_SUBPARTITIONS 官方解释，作用，如何使用详细说明

本站中文解释

Oracle视图ALL_IND_SUBPARTITIONS显示全部在当前数据库中实例内定义的指定表的所有分区下的所有分段属性(Subpartition) 。

该视图用于查询一个表的全部分区下的所有分段的相关信息，例如定义的类型、属性、分段名，对对对应的分段号等。

使用方法：
SELECT *
FROM ALL_IND_SUBPARTITIONS
WHERE TABLE_NAME=”;

官方英文解释

ALL_IND_SUBPARTITIONS displays, for each index subpartition accessible to the current user, the subpartition-level partitioning information, the storage parameters for the subpartition, and various subpartition statistics generated by the DBMS_STATS package.

Related Views

DBA_IND_SUBPARTITIONS describes all index subpartitions in the database.
USER_IND_SUBPARTITIONS describes the index subpartitions owned by the current user. This view does not display the INDEX_OWNER column.

Column	Datatype	NULL	Description
`INDEX_OWNER`	`VARCHAR2(128)`	`NOT NULL`	Owner of the index
`INDEX_NAME`	`VARCHAR2(128)`	`NOT NULL`	Name of the index
`PARTITION_NAME`	`VARCHAR2(128)`		Name of the partition
`SUBPARTITION_NAME`	`VARCHAR2(128)`		Name of the subpartition
`HIGH_VALUE`	`LONG`		Subpartition bound value expression
`HIGH_VALUE_LENGTH`	`NUMBER`	`NOT NULL`	Length of the subpartition bound value expression
`PARTITION_POSITION`	`NUMBER`		Position of the partition within the index
`SUBPARTITION_POSITION`	`NUMBER`		Position of a subpartition within a partition
`STATUS`	`VARCHAR2(8)`		Indicates whether the index partition is usable (`USABLE`) or not (`UNUSABLE`)
`TABLESPACE_NAME`	`VARCHAR2(30)`	`NOT NULL`	Name of the tablespace containing the partition
`PCT_FREE`	`NUMBER`	`NOT NULL`	Minimum percentage of free space in a block
`INI_TRANS`	`NUMBER`	`NOT NULL`	Initial number of transactions
`MAX_TRANS`	`NUMBER`	`NOT NULL`	Maximum number of transactions
`INITIAL_EXTENT`	`NUMBER`		Size of the initial extent in bytes
`NEXT_EXTENT`	`NUMBER`		Size of secondary extents in bytes
`MIN_EXTENT`	`NUMBER`		Minimum number of extents allowed in the segment
`MAX_EXTENT`	`NUMBER`		Maximum number of extents allowed in the segment
`MAX_SIZE`	`NUMBER`		Maximum number of blocks allowed in the segment
`PCT_INCREASE`	`NUMBER`	`NOT NULL`	Percentage increase in extent size
`FREELISTS`	`NUMBER`		Number of process freelists allocated in this segment
`FREELIST_GROUPS`	`NUMBER`		Number of process freelist groups allocated in this segment
`LOGGING`	`VARCHAR2(3)`		Indicates whether or not changes to the index are logged: `YES` `NO`
`COMPRESSION`	`VARCHAR2(13)`		Type of compression being used for the subpartition: `ENABLED` – Prefix compression `ADVANCED` `HIGH` – Advanced high compression `ADVANCED` `LOW` – Advanced low compression `DISABLED` – No compression is present
`BLEVEL`	`NUMBER`		B-Tree level (depth of the index from its root block to its leaf blocks). A depth of `0` indicates that the root block and leaf block are the same.
`LEAF_BLOCKS`	`NUMBER`		Number of leaf blocks in the index
`DISTINCT_KEYS`	`NUMBER`		Number of distinct keys in the index partition
`AVG_LEAF_BLOCKS_PER_KEY`	`NUMBER`		Average number of leaf blocks in which each distinct value in the index appears, rounded to the nearest integer. For indexes that enforce `UNIQUE` and `PRIMARY` `KEY` constraints, this value is always `1`.
`AVG_DATA_BLOCKS_PER_KEY`	`NUMBER`		Average number of data blocks in the table that are pointed to by a distinct value in the index rounded to the nearest integer. This statistic is the average number of data blocks that contain rows that contain a given value for the indexed columns.
`CLUSTERING_FACTOR`	`NUMBER`		Indicates the amount of order of the rows in the table based on the values of the index. If the value is near the number of blocks, then the table is very well ordered. In this case, the index entries in a single leaf block tend to point to rows in the same data blocks. If the value is near the number of rows, then the table is very randomly ordered. In this case, it is unlikely that index entries in the same leaf block point to rows in the same data blocks.
`NUM_ROWS`	`NUMBER`		Number of rows in this index subpartition
`SAMPLE_SIZE`	`NUMBER`		Sample size used in analyzing this subpartition
`LAST_ANALYZED`	`DATE`		Date on which this partition was most recently analyzed
`BUFFER_POOL`	`VARCHAR2(7)`		Buffer pool for the subpartition: `DEFAULT` `KEEP` `RECYCLE` `NULL`
`FLASH_CACHE`	`VARCHAR2(7)`		Database Smart Flash Cache hint to be used for subpartition blocks: `DEFAULT` `KEEP` `NONE` Solaris and Oracle Linux functionality only.
`CELL_FLASH_CACHE`	`VARCHAR2(7)`		Cell flash cache hint to be used for subpartition blocks: `DEFAULT` `KEEP` `NONE` See Also: Oracle Exadata Storage Server Software documentation for more information
`USER_STATS`	`VARCHAR2(3)`		Indicates whether statistics were entered directly by the user (`YES`) or not (`NO`)
`GLOBAL_STATS`	`VARCHAR2(3)`		`GLOBAL_STATS` will be `YES` if statistics have been gathered or `NO` if statistics have not been gathered
`INTERVAL`	`VARCHAR2(3)`		Indicates whether the partition is in the interval section of an interval partitioned table (`YES`) or whether the partition is in the range section (`NO`)
`SEGMENT_CREATED`	`VARCHAR2(3)`		Indicates whether the index subpartition segment has been created (`YES`) or not (`NO`); `N/A` indicates that this index is not subpartitioned
`DOMIDX_OPSTATUS`	`VARCHAR2(6)`		Status of the operation on the domain index: NULL – Index is not a domain index `VALID` – Operation performed without errors `FAILED` – Operation failed with an error
`PARAMETERS`	`VARCHAR2(1000)`		For a domain index, the parameter string

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