USER_TAB_COL_STATISTICS

Columns
   ___________________________
 
   TABLE_NAME
      Table,view or cluster name
   COLUMN_NAME
      Column name
   NUM_DISTINCT
      The number of distinct values in the column
   LOW_VALUE
      The low value in the column
   HIGH_VALUE
      The high value in the column
   DENSITY
      The density of the column
   NUM_NULLS
      The number of nulls in the column
   NUM_BUCKETS
      The number of buckets in histogram for the column
   LAST_ANALYZED
      The date of the most recent time this column was analyzed
   SAMPLE_SIZE
      The sample size used in analyzing this column
   GLOBAL_STATS
      Are the statistics calculated without merging underlying partitions?
   USER_STATS
      Were the statistics entered directly by the user?
   AVG_COL_LEN
      The average length of the column in bytes

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