diff options
Diffstat (limited to 'src/include')
| -rw-r--r-- | src/include/catalog/pg_statistic.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/include/catalog/pg_statistic.h b/src/include/catalog/pg_statistic.h index 4216e27a8a4..444dc27dcad 100644 --- a/src/include/catalog/pg_statistic.h +++ b/src/include/catalog/pg_statistic.h @@ -240,6 +240,10 @@ DECLARE_FOREIGN_KEY((starelid, staattnum), pg_attribute, (attrelid, attnum)); * the fraction of non-null rows that contain at least one null element). If * this member is omitted, the column is presumed to contain no null elements. * + * Starting in v19, the first extra member can be smaller than the smallest + * frequency of any stored MCE, indicating that it's known that no element + * not present in the MCE array has frequency greater than that value. + * * Note: in current usage for tsvector columns, the stavalues elements are of * type text, even though their representation within tsvector is not * exactly text. |