More test coverage
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@ -8146,3 +8146,25 @@ analyze select * from t1 where a >= 0;
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id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
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1 SIMPLE t1 ALL NULL NULL NULL NULL 100 100.00 100.00 100.00 Using where
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drop table t1;
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#
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# More test coverage
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#
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create table t0(a int);
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insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
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create table t1(a int);
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insert into t1 select A.a + B.a* 10 + C.a * 100 from t0 A, t0 B, t0 C;
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create table t2 (a int);
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insert into t2 select 1 from t1;
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insert into t2 select (a+1)*10 from t0;
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insert into t2 values (0);
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analyze table t2 persistent for all;
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Table Op Msg_type Msg_text
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test.t2 analyze status Engine-independent statistics collected
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test.t2 analyze status OK
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analyze select * from t2 where a < 1;
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id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
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1 SIMPLE t2 ALL NULL NULL NULL NULL 1011 1011.00 8.33 0.10 Using where
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analyze select * from t2 where a =100;
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id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
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1 SIMPLE t2 ALL NULL NULL NULL NULL 1011 1011.00 0.10 0.10 Using where
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drop table t0,t1,t2;
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@ -353,3 +353,25 @@ analyze select * from t1 where a < 0;
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analyze select * from t1 where a > 0;
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analyze select * from t1 where a >= 0;
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drop table t1;
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--echo #
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--echo # More test coverage
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--echo #
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create table t0(a int);
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insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
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create table t1(a int);
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insert into t1 select A.a + B.a* 10 + C.a * 100 from t0 A, t0 B, t0 C;
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create table t2 (a int);
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insert into t2 select 1 from t1;
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insert into t2 select (a+1)*10 from t0;
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insert into t2 values (0);
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analyze table t2 persistent for all;
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analyze select * from t2 where a < 1;
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analyze select * from t2 where a =100;
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drop table t0,t1,t2;
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@ -914,7 +914,6 @@ double Histogram_json_hb::range_selectivity(Field *field, key_range *min_endp,
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/*
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The range is "col > $CONST" and we've found a bucket that contains
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only the value $CONST. Move to the next bucket.
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TODO: what if the last value in the histogram is a popular one?
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*/
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idx++;
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}
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@ -948,7 +947,6 @@ double Histogram_json_hb::range_selectivity(Field *field, key_range *min_endp,
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/*
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The range is "col < $CONST" and we've found a bucket starting with
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$CONST. Move to the previous bucket.
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TODO: what if the first value is the popular one?
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*/
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idx--;
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}
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