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MDEV-27062: Make histogram_type=JSON_HB the new default

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This commit is contained in:
Sergei Petrunia
2021-11-29 16:11:18 +03:00
parent eb6a9ad705
commit be55ad0d34
18 changed files with 119 additions and 119 deletions
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10
mysql-test/main/statistics_json.result
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@ -3,7 +3,7 @@
#
set @SINGLE_PREC_TYPE='single_prec_hb';
set @DOUBLE_PREC_TYPE='double_prec_hb';
set @DEFAULT_HIST_TYPE=@@histogram_type;
set @DEFAULT_HIST_TYPE='double_prec_hb';
set @SINGLE_PREC_TYPE='JSON_HB';
set @DOUBLE_PREC_TYPE='JSON_HB';
set @DEFAULT_HIST_TYPE='JSON_HB';
@ -4244,15 +4244,15 @@ test t1_json a a-0 a-9 0.0000 3.0000 1.0000 10 JSON_HB {
}
explain extended select * from t1_json where a between 'a-3a' and 'zzzzzzzzz';
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1_json ALL NULL NULL NULL NULL 10 58.71 Using where
1 SIMPLE t1_json ALL NULL NULL NULL NULL 10 68.71 Using where
Warnings:
Note 1003 select `test`.`t1_json`.`a` AS `a` from `test`.`t1_json` where `test`.`t1_json`.`a` between 'a-3a' and 'zzzzzzzzz'
analyze select * from t1_json where a between 'a-3a' and 'zzzzzzzzz';
id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
1 SIMPLE t1_json ALL NULL NULL NULL NULL 10 10.00 58.71 60.00 Using where
1 SIMPLE t1_json ALL NULL NULL NULL NULL 10 10.00 68.71 60.00 Using where
explain extended select * from t1_json where a < 'b-1a';
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1_json ALL NULL NULL NULL NULL 10 90.00 Using where
1 SIMPLE t1_json ALL NULL NULL NULL NULL 10 100.00 Using where
Warnings:
Note 1003 select `test`.`t1_json`.`a` AS `a` from `test`.`t1_json` where `test`.`t1_json`.`a` < 'b-1a'
analyze select * from t1_json where a > 'zzzzzzzzz';
@ -7529,7 +7529,7 @@ test.t1 analyze status OK
analyze
select c from t1 where c > '1';
id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 16 16.00 75.00 75.00 Using where
1 SIMPLE t1 ALL NULL NULL NULL NULL 16 16.00 80.47 75.00 Using where
drop table t1;
#
# MDEV-26849: JSON Histograms: point selectivity estimates are off for non-existent values