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| author | Igor Babaev <igor@askmonty.org> | 2013-03-11 07:44:24 -0700 |
|---|---|---|
| committer | Igor Babaev <igor@askmonty.org> | 2013-03-11 07:44:24 -0700 |
| commit | fc1c8ffdadfd14eb51969ecfde43e3204f10f6f8 (patch) | |
| tree | 70ee4b3628cc62a706476d6c7b873fcfc9aa0e10 /sql/sql_statistics.h | |
| parent | 938d47dcdc50ae4f127197ed72fd044b33ea7524 (diff) | |
| download | mariadb-git-fc1c8ffdadfd14eb51969ecfde43e3204f10f6f8.tar.gz | |
The pilot patch for mwl#253.
Diffstat (limited to 'sql/sql_statistics.h')
| -rw-r--r-- | sql/sql_statistics.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/sql/sql_statistics.h b/sql/sql_statistics.h index 17f22cec4e5..6bf552b92a0 100644 --- a/sql/sql_statistics.h +++ b/sql/sql_statistics.h @@ -90,6 +90,12 @@ int rename_column_in_stat_tables(THD *thd, TABLE *tab, Field *col, const char *new_name); void set_statistics_for_table(THD *thd, TABLE *table); +double get_column_avg_frequency(Field * field); + +double get_column_range_cardinality(Field *field, + key_range *min_endp, + key_range *max_endp); + class Columns_statistics; class Index_statistics; |