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Object Name: | DBA_TAB_COL_STATISTICS |
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Object Type: | VIEW |
Owner: | SYS |
Subobject Name: | |
Status: | VALID |
Columns of user's tables, views and clusters
Name | Datatype | Length | Mandatory | Comments |
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OWNER | VARCHAR2 | (128) | Table, view or cluster owner | |
TABLE_NAME | VARCHAR2 | (128) | Table, view or cluster name | |
COLUMN_NAME | VARCHAR2 | (128) | Column name | |
NUM_DISTINCT | NUMBER | The number of distinct values in the column | ||
LOW_VALUE | RAW | (1000) | The low value in the column | |
HIGH_VALUE | RAW | (1000) | The high value in the column | |
DENSITY | NUMBER | The density of the column | ||
NUM_NULLS | NUMBER | The number of nulls in the column | ||
NUM_BUCKETS | NUMBER | The number of buckets in histogram for the column | ||
LAST_ANALYZED | DATE | The date of the most recent time this column was analyzed | ||
SAMPLE_SIZE | NUMBER | The sample size used in analyzing this column | ||
GLOBAL_STATS | VARCHAR2 | (3) | Are the statistics calculated without merging underlying partitions? | |
USER_STATS | VARCHAR2 | (3) | Were the statistics entered directly by the user? | |
NOTES | VARCHAR2 | (63) | Notes regarding special properties of the stats | |
AVG_COL_LEN | NUMBER | The average length of the column in bytes | ||
HISTOGRAM | VARCHAR2 | (15) | ||
SCOPE | VARCHAR2 | (7) | whether statistics for the object is shared or session |
Cut, paste (and edit) the following text to query this object:
SELECT OWNER
, TABLE_NAME
, COLUMN_NAME
, NUM_DISTINCT
, LOW_VALUE
, HIGH_VALUE
, DENSITY
, NUM_NULLS
, NUM_BUCKETS
, LAST_ANALYZED
, SAMPLE_SIZE
, GLOBAL_STATS
, USER_STATS
, NOTES
, AVG_COL_LEN
, HISTOGRAM
, SCOPE
FROM SYS.DBA_TAB_COL_STATISTICS;
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