database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-11-06 13:10:12 +03:00
Code Activity
Files
5936d43afb6ad5a75d9eed17eb39e8c00a08a684
mariadb/sql/sql_statistics.h
Varun Gupta a9c09c95bd MDEV-15306: Wrong/Unexpected result with the value optimizer_use_condition_selectivity set to 4 
Currently for selectivity calculation we perform range analysis for a column even when we don't have any statistics(EITS).
This makes less sense but is used to catch contradiction for WHERE condition.

So the solution is to not perform range analysis for selectivity calculation for columns that do not have statistics.
2018-08-29 02:17:37 +05:30

11 KiB
Raw Blame History

View Raw
View Git Blame Copy Permalink