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| author | Igor Babaev <igor@askmonty.org> | 2013-04-12 02:47:46 -0700 |
|---|---|---|
| committer | Igor Babaev <igor@askmonty.org> | 2013-04-12 02:47:46 -0700 |
| commit | f3bbd40349dcb75c8a9c6fad88001463ab016211 (patch) | |
| tree | f2340bda43e37e5d7ba823f05a2ecfcdf772e77a /sql/sql_statistics.cc | |
| parent | 549ada35b0ae2f5a5728243cd6be0fe8f873c792 (diff) | |
| download | mariadb-git-f3bbd40349dcb75c8a9c6fad88001463ab016211.tar.gz | |
Fixed bug mdev-4389.
The selectivity of a range degenerated into a point never should be set to 0.
Diffstat (limited to 'sql/sql_statistics.cc')
| -rw-r--r-- | sql/sql_statistics.cc | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sql/sql_statistics.cc b/sql/sql_statistics.cc index efd5af7adbf..df86686f773 100644 --- a/sql/sql_statistics.cc +++ b/sql/sql_statistics.cc @@ -3417,6 +3417,7 @@ double get_column_range_cardinality(Field *field, else sel= hist->range_selectivity(min_mp_pos, max_mp_pos); res= col_non_nulls * sel; + set_if_bigger(res, col_stats->get_avg_frequency()); } else res= col_non_nulls; |