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Fixed bug mdev-4363.

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When calculating the selectivity of a range in the function
get_column_range_cardinality a check whether NULL values are
included into into the range must be done.
This commit is contained in:
Igor Babaev 2013-04-06 17:18:51 -07:00
commit e3bf08d4b1
6 changed files with 127 additions and 7 deletions
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3
sql/sql_statistics.h
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@ -105,7 +105,8 @@ double get_column_avg_frequency(Field * field);
double get_column_range_cardinality(Field *field,
key_range *min_endp,
key_range *max_endp);
key_range *max_endp,
uint range_flag);
class Histogram
{