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Implement point selectivity for JSON histograms

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* Also merges tests relating to JSON statistics into one file

Signed-off-by: Michael Okoko <okokomichaels@outlook.com>
This commit is contained in:
Michael Okoko
2021-08-21 09:17:23 +01:00
committed by Sergei Petrunia
parent 547f805311
commit bff65a813e
8 changed files with 254 additions and 501 deletions
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9
sql/sql_statistics.h
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@ -169,8 +169,7 @@ public:
virtual void set_size(ulonglong sz)=0;
virtual double point_selectivity(Field *field, key_range *min_endp,
key_range *max_endp, double avg_selection)=0;
virtual double point_selectivity(Field *field, key_range *endpoint, double avg_selection)=0;
virtual double range_selectivity(Field *field, key_range *min_endp,
key_range *max_endp)=0;
@ -334,8 +333,7 @@ public:
/*
Estimate selectivity of "col=const" using a histogram
*/
double point_selectivity(Field *field, key_range *min_endp,
key_range *max_endp, double avg_sel) override;
double point_selectivity(Field *field, key_range *endpoint, double avg_sel) override;
};
class Histogram_json : public Histogram_base
@ -399,8 +397,7 @@ public:
uchar *get_values() override { return (uchar *) values; }
double point_selectivity(Field *field, key_range *min_endp,
key_range *max_endp, double avg_selection) override;
double point_selectivity(Field *field, key_range *endpoint, double avg_selection) override;
double range_selectivity(Field *field, key_range *min_endp,
key_range *max_endp) override;