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Fixed bug mdev-4370.

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Don't try to a histogram if it is not read into the cache for statistical data.
It may happen so if optimizer_use_condition_selectivity is set to 3. This 
setting orders the optimizer not use histograms to calculate selectivity.
This commit is contained in:
Igor Babaev
2013-04-05 11:24:28 -07:00
parent 4079a5dc3f
commit daaa5834c9
5 changed files with 87 additions and 2 deletions
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2
sql/sql_statistics.h
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@ -195,6 +195,8 @@ public:
void set_values (uchar *vals) { values= (uchar *) vals; }
bool is_available() { return get_size() > 0 && get_values(); }
void set_value(uint i, double val)
{
switch (type) {