diff options
Diffstat (limited to 'doc/src')
| -rw-r--r-- | doc/src/sgml/catalogs.sgml | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/doc/src/sgml/catalogs.sgml b/doc/src/sgml/catalogs.sgml index 8fd055b0090..ccb9b97a8cb 100644 --- a/doc/src/sgml/catalogs.sgml +++ b/doc/src/sgml/catalogs.sgml @@ -5849,9 +5849,9 @@ <entry>The number of distinct nonnull data values in the column. A value greater than zero is the actual number of distinct values. A value less than zero is the negative of a multiplier for the number - of rows in the table; for example, a column in which values appear about - twice on the average could be represented by - <structfield>stadistinct</> = -0.5. + of rows in the table; for example, a column in which about 80% of the + values are nonnull and each nonnull value appears about twice on + average could be represented by <structfield>stadistinct</> = -0.4. A zero value means the number of distinct values is unknown. </entry> </row> |