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Oracle® Database Reference
10g Release 1 (10.1)

Part Number B10755-01
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ALL_TAB_COL_STATISTICS

ALL_TAB_COL_STATISTICS provides column statistics and histogram information extracted from "ALL_TAB_COLUMNS".


Related Views
Column Datatype NULL Description
OWNER VARCHAR2(30)   Table owner
TABLE_NAME VARCHAR2(30)   Table name
COLUMN_NAME VARCHAR2(30)   Column name
NUM_DISTINCT NUMBER
Number of distinct values in the column
LOW_VALUE RAW(32)
Low value in the column
HIGH_VALUE RAW(32)
High value in the column
DENSITY NUMBER
Density of the column
NUM_NULLS NUMBER
Number of nulls in the column
NUM_BUCKETS NUMBER
Number of buckets in histogram for the column
LAST_ANALYZED DATE
Date on which this column was most recently analyzed
SAMPLE_SIZE NUMBER
Sample size used in analyzing this column
GLOBAL_STATS VARCHAR2(3)
For partitioned tables, indicates whether column statistics were collected for the table as a whole (YES) or were estimated from statistics on underlying partitions and subpartitions (NO)
USER_STATS VARCHAR2(3)
Indicates whether statistics were entered directly by the user (YES) or not (NO)
AVG_COL_LEN NUMBER
Average length of the column (in bytes)
HISTOGRAM VARCHAR2(15)   Indicates existence/type of histogram:
  • NONE

  • FREQUENCY

  • HEIGHT BALANCED