ALL_TAB_HISTOGRAMS describes histograms on tables and views accessible to the current user.
DBA_TAB_HISTOGRAMS describes histograms on all tables and views in the database.
USER_TAB_HISTOGRAMS describes histograms on all tables and views owned by the current user. This view does not display the OWNER column.
Note:
These views are populated only if you collect statistics on the index using theDBMS_STATS package. For more information, see Oracle Database PL/SQL Packages and Types Reference.| Column | Datatype | NULL | Description |
|---|---|---|---|
OWNER |
VARCHAR2(30) |
Owner of the table | |
TABLE_NAME |
VARCHAR2(30) |
Name of the table | |
COLUMN_NAME |
VARCHAR2(4000) |
Column name or attribute of the object type column | |
ENDPOINT_NUMBER |
NUMBER |
Histogram bucket number | |
ENDPOINT_VALUE |
NUMBER |
Normalized endpoint value for this bucket | |
ENDPOINT_ACTUAL_VALUE |
VARCHAR2(1000) |
Actual (not normalized) string value of the endpoint for this bucket |