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| Current File : //home/usr.opt/mysql57/mysql-test/suite/innodb/r/records_in_range.result |
CREATE TABLE records_in_range_test (
c1 VARCHAR(16),
c2 VARCHAR(512),
PRIMARY KEY (c1)
) ENGINE=INNODB;
INSERT INTO records_in_range_test VALUES
('ccc', REPEAT('v', 512)),
('kkk01', REPEAT('v', 512)),
('kkk02', REPEAT('v', 512)),
('kkk03', REPEAT('v', 512)),
('kkk04', REPEAT('v', 512)),
('kkk05', REPEAT('v', 512)),
('kkk06', REPEAT('v', 512)),
('kkk07', REPEAT('v', 512)),
('kkk08', REPEAT('v', 512)),
('mmm', REPEAT('v', 512)),
('nnn', REPEAT('v', 512)),
('uuu01', REPEAT('v', 512)),
('uuu02', REPEAT('v', 512)),
('uuu03', REPEAT('v', 512)),
('uuu04', REPEAT('v', 512)),
('uuu05', REPEAT('v', 512)),
('uuu06', REPEAT('v', 512)),
('uuu07', REPEAT('v', 512)),
('uuu08', REPEAT('v', 512)),
('xxx', REPEAT('v', 512));
ANALYZE TABLE records_in_range_test;
Table Op Msg_type Msg_text
test.records_in_range_test analyze status OK
SELECT index_name, stat_name, stat_value
FROM mysql.innodb_index_stats
WHERE
table_name='records_in_range_test' AND stat_name = 'n_leaf_pages';
index_name stat_name stat_value
PRIMARY n_leaf_pages 1or2or4
SELECT index_name, stat_name, stat_value
FROM mysql.innodb_index_stats
WHERE
table_name='records_in_range_test' AND stat_name = 'size';
index_name stat_name stat_value
PRIMARY size 1or3or5
SET SESSION DEBUG='+d,print_btr_estimate_n_rows_in_range_return_value';
In all SELECTs below the number of the records in the range returned
by COUNT(*) must be the same as the number returned by
btr_estimate_n_rows_in_range() which can be seen inside the artificial
warning
Test left-unbounded, right-open intervals
SELECT COUNT(*) FROM records_in_range_test WHERE c1 < 'aaa';
COUNT(*)
0
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 < 'ccc';
COUNT(*)
0
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 < 'eee';
COUNT(*)
1
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 1
SELECT COUNT(*) FROM records_in_range_test WHERE c1 < 'mmm';
COUNT(*)
9
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 9
SELECT COUNT(*) FROM records_in_range_test WHERE c1 < 'nnn';
COUNT(*)
10
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 10
SELECT COUNT(*) FROM records_in_range_test WHERE c1 < 'qqq';
COUNT(*)
11
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 11
SELECT COUNT(*) FROM records_in_range_test WHERE c1 < 'xxx';
COUNT(*)
19
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 19
SELECT COUNT(*) FROM records_in_range_test WHERE c1 < 'zzz';
COUNT(*)
20
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 20
Test left-unbounded, right-closed intervals
SELECT COUNT(*) FROM records_in_range_test WHERE c1 <= 'aaa';
COUNT(*)
0
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 <= 'ccc';
COUNT(*)
1
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 1
SELECT COUNT(*) FROM records_in_range_test WHERE c1 <= 'eee';
COUNT(*)
1
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 1
SELECT COUNT(*) FROM records_in_range_test WHERE c1 <= 'mmm';
COUNT(*)
10
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 10
SELECT COUNT(*) FROM records_in_range_test WHERE c1 <= 'nnn';
COUNT(*)
11
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 11
SELECT COUNT(*) FROM records_in_range_test WHERE c1 <= 'qqq';
COUNT(*)
11
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 11
SELECT COUNT(*) FROM records_in_range_test WHERE c1 <= 'xxx';
COUNT(*)
20
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 20
SELECT COUNT(*) FROM records_in_range_test WHERE c1 <= 'zzz';
COUNT(*)
20
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 20
Test left-open, right-unbounded intervals
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'aaa';
COUNT(*)
20
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 20
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'ccc';
COUNT(*)
19
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 19
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'eee';
COUNT(*)
19
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 19
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'mmm';
COUNT(*)
10
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 10
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'nnn';
COUNT(*)
9
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 9
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'qqq';
COUNT(*)
9
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 9
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'xxx';
COUNT(*)
0
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'zzz';
COUNT(*)
0
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 0
Test left-closed, right-unbounded intervals
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'aaa';
COUNT(*)
20
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 20
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'ccc';
COUNT(*)
20
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 20
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'eee';
COUNT(*)
19
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 19
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'mmm';
COUNT(*)
11
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 11
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'nnn';
COUNT(*)
10
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 10
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'qqq';
COUNT(*)
9
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 9
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'xxx';
COUNT(*)
1
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 1
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'zzz';
COUNT(*)
0
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 0
Test left-open, right-open intervals
In some cases here the optimizer is smart enough not to call
ha_innobase::records_in_range() at all, so we get no warning containing
the value returned from btr_estimate_n_rows_in_range()
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'aaa' AND c1 < 'bbb';
COUNT(*)
0
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'aaa' AND c1 < 'ccc';
COUNT(*)
0
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'aaa' AND c1 < 'eee';
COUNT(*)
1
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 1
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'aaa' AND c1 < 'mmm';
COUNT(*)
9
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 9
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'aaa' AND c1 < 'nnn';
COUNT(*)
10
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 10
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'aaa' AND c1 < 'qqq';
COUNT(*)
11
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 11
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'aaa' AND c1 < 'xxx';
COUNT(*)
19
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 19
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'aaa' AND c1 < 'zzz';
COUNT(*)
20
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 20
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'ccc' AND c1 < 'bbb';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'ccc' AND c1 < 'ccc';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'ccc' AND c1 < 'eee';
COUNT(*)
0
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'ccc' AND c1 < 'mmm';
COUNT(*)
8
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 8
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'ccc' AND c1 < 'nnn';
COUNT(*)
9
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 9
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'ccc' AND c1 < 'qqq';
COUNT(*)
10
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 10
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'ccc' AND c1 < 'xxx';
COUNT(*)
18
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 18
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'ccc' AND c1 < 'zzz';
COUNT(*)
19
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 19
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'eee' AND c1 < 'bbb';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'eee' AND c1 < 'ccc';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'eee' AND c1 < 'eee';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'eee' AND c1 < 'mmm';
COUNT(*)
8
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 8
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'eee' AND c1 < 'nnn';
COUNT(*)
9
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 9
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'eee' AND c1 < 'qqq';
COUNT(*)
10
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 10
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'eee' AND c1 < 'xxx';
COUNT(*)
18
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 18
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'eee' AND c1 < 'zzz';
COUNT(*)
19
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 19
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'mmm' AND c1 < 'bbb';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'mmm' AND c1 < 'ccc';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'mmm' AND c1 < 'eee';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'mmm' AND c1 < 'mmm';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'mmm' AND c1 < 'nnn';
COUNT(*)
0
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'mmm' AND c1 < 'qqq';
COUNT(*)
1
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 1
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'mmm' AND c1 < 'xxx';
COUNT(*)
9
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 9
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'mmm' AND c1 < 'zzz';
COUNT(*)
10
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 10
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'nnn' AND c1 < 'bbb';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'nnn' AND c1 < 'ccc';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'nnn' AND c1 < 'eee';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'nnn' AND c1 < 'mmm';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'nnn' AND c1 < 'nnn';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'nnn' AND c1 < 'qqq';
COUNT(*)
0
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'nnn' AND c1 < 'xxx';
COUNT(*)
8
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 8
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'nnn' AND c1 < 'zzz';
COUNT(*)
9
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 9
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'qqq' AND c1 < 'bbb';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'qqq' AND c1 < 'ccc';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'qqq' AND c1 < 'eee';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'qqq' AND c1 < 'mmm';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'qqq' AND c1 < 'nnn';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'qqq' AND c1 < 'qqq';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'qqq' AND c1 < 'xxx';
COUNT(*)
8
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 8
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'qqq' AND c1 < 'zzz';
COUNT(*)
9
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 9
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'xxx' AND c1 < 'bbb';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'xxx' AND c1 < 'ccc';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'xxx' AND c1 < 'eee';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'xxx' AND c1 < 'mmm';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'xxx' AND c1 < 'nnn';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'xxx' AND c1 < 'qqq';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'xxx' AND c1 < 'xxx';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'xxx' AND c1 < 'zzz';
COUNT(*)
0
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'zzz' AND c1 < 'bbb';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'zzz' AND c1 < 'ccc';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'zzz' AND c1 < 'eee';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'zzz' AND c1 < 'mmm';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'zzz' AND c1 < 'nnn';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'zzz' AND c1 < 'qqq';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'zzz' AND c1 < 'xxx';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'zzz' AND c1 < 'zzz';
COUNT(*)
0
Test left-closed, right-open intervals
In some cases here the optimizer is smart enough not to call
ha_innobase::records_in_range() at all, so we get no warning containing
the value returned from btr_estimate_n_rows_in_range()
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'aaa' AND c1 < 'bbb';
COUNT(*)
0
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'aaa' AND c1 < 'ccc';
COUNT(*)
0
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'aaa' AND c1 < 'eee';
COUNT(*)
1
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 1
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'aaa' AND c1 < 'mmm';
COUNT(*)
9
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 9
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'aaa' AND c1 < 'nnn';
COUNT(*)
10
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 10
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'aaa' AND c1 < 'qqq';
COUNT(*)
11
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 11
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'aaa' AND c1 < 'xxx';
COUNT(*)
19
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 19
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'aaa' AND c1 < 'zzz';
COUNT(*)
20
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 20
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'ccc' AND c1 < 'bbb';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'ccc' AND c1 < 'ccc';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'ccc' AND c1 < 'eee';
COUNT(*)
1
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 1
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'ccc' AND c1 < 'mmm';
COUNT(*)
9
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 9
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'ccc' AND c1 < 'nnn';
COUNT(*)
10
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 10
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'ccc' AND c1 < 'qqq';
COUNT(*)
11
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 11
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'ccc' AND c1 < 'xxx';
COUNT(*)
19
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 19
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'ccc' AND c1 < 'zzz';
COUNT(*)
20
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 20
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'eee' AND c1 < 'bbb';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'eee' AND c1 < 'ccc';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'eee' AND c1 < 'eee';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'eee' AND c1 < 'mmm';
COUNT(*)
8
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 8
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'eee' AND c1 < 'nnn';
COUNT(*)
9
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 9
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'eee' AND c1 < 'qqq';
COUNT(*)
10
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 10
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'eee' AND c1 < 'xxx';
COUNT(*)
18
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 18
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'eee' AND c1 < 'zzz';
COUNT(*)
19
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 19
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'mmm' AND c1 < 'bbb';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'mmm' AND c1 < 'ccc';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'mmm' AND c1 < 'eee';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'mmm' AND c1 < 'mmm';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'mmm' AND c1 < 'nnn';
COUNT(*)
1
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 1
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'mmm' AND c1 < 'qqq';
COUNT(*)
2
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 2
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'mmm' AND c1 < 'xxx';
COUNT(*)
10
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 10
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'mmm' AND c1 < 'zzz';
COUNT(*)
11
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 11
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'nnn' AND c1 < 'bbb';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'nnn' AND c1 < 'ccc';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'nnn' AND c1 < 'eee';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'nnn' AND c1 < 'mmm';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'nnn' AND c1 < 'nnn';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'nnn' AND c1 < 'qqq';
COUNT(*)
1
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 1
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'nnn' AND c1 < 'xxx';
COUNT(*)
9
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 9
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'nnn' AND c1 < 'zzz';
COUNT(*)
10
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 10
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'qqq' AND c1 < 'bbb';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'qqq' AND c1 < 'ccc';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'qqq' AND c1 < 'eee';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'qqq' AND c1 < 'mmm';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'qqq' AND c1 < 'nnn';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'qqq' AND c1 < 'qqq';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'qqq' AND c1 < 'xxx';
COUNT(*)
8
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 8
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'qqq' AND c1 < 'zzz';
COUNT(*)
9
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 9
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'xxx' AND c1 < 'bbb';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'xxx' AND c1 < 'ccc';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'xxx' AND c1 < 'eee';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'xxx' AND c1 < 'mmm';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'xxx' AND c1 < 'nnn';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'xxx' AND c1 < 'qqq';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'xxx' AND c1 < 'xxx';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'xxx' AND c1 < 'zzz';
COUNT(*)
1
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 1
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'zzz' AND c1 < 'bbb';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'zzz' AND c1 < 'ccc';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'zzz' AND c1 < 'eee';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'zzz' AND c1 < 'mmm';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'zzz' AND c1 < 'nnn';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'zzz' AND c1 < 'qqq';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'zzz' AND c1 < 'xxx';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'zzz' AND c1 < 'zzz';
COUNT(*)
0
Test left-open, right-closed intervals
In some cases here the optimizer is smart enough not to call
ha_innobase::records_in_range() at all, so we get no warning containing
the value returned from btr_estimate_n_rows_in_range()
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'aaa' AND c1 <= 'bbb';
COUNT(*)
0
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'aaa' AND c1 <= 'ccc';
COUNT(*)
1
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 1
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'aaa' AND c1 <= 'eee';
COUNT(*)
1
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 1
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'aaa' AND c1 <= 'mmm';
COUNT(*)
10
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 10
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'aaa' AND c1 <= 'nnn';
COUNT(*)
11
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 11
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'aaa' AND c1 <= 'qqq';
COUNT(*)
11
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 11
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'aaa' AND c1 <= 'xxx';
COUNT(*)
20
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 20
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'aaa' AND c1 <= 'zzz';
COUNT(*)
20
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 20
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'ccc' AND c1 <= 'bbb';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'ccc' AND c1 <= 'ccc';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'ccc' AND c1 <= 'eee';
COUNT(*)
0
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'ccc' AND c1 <= 'mmm';
COUNT(*)
9
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 9
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'ccc' AND c1 <= 'nnn';
COUNT(*)
10
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 10
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'ccc' AND c1 <= 'qqq';
COUNT(*)
10
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 10
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'ccc' AND c1 <= 'xxx';
COUNT(*)
19
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 19
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'ccc' AND c1 <= 'zzz';
COUNT(*)
19
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 19
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'eee' AND c1 <= 'bbb';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'eee' AND c1 <= 'ccc';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'eee' AND c1 <= 'eee';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'eee' AND c1 <= 'mmm';
COUNT(*)
9
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 9
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'eee' AND c1 <= 'nnn';
COUNT(*)
10
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 10
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'eee' AND c1 <= 'qqq';
COUNT(*)
10
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 10
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'eee' AND c1 <= 'xxx';
COUNT(*)
19
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 19
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'eee' AND c1 <= 'zzz';
COUNT(*)
19
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 19
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'mmm' AND c1 <= 'bbb';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'mmm' AND c1 <= 'ccc';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'mmm' AND c1 <= 'eee';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'mmm' AND c1 <= 'mmm';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'mmm' AND c1 <= 'nnn';
COUNT(*)
1
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 1
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'mmm' AND c1 <= 'qqq';
COUNT(*)
1
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 1
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'mmm' AND c1 <= 'xxx';
COUNT(*)
10
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 10
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'mmm' AND c1 <= 'zzz';
COUNT(*)
10
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 10
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'nnn' AND c1 <= 'bbb';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'nnn' AND c1 <= 'ccc';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'nnn' AND c1 <= 'eee';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'nnn' AND c1 <= 'mmm';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'nnn' AND c1 <= 'nnn';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'nnn' AND c1 <= 'qqq';
COUNT(*)
0
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'nnn' AND c1 <= 'xxx';
COUNT(*)
9
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 9
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'nnn' AND c1 <= 'zzz';
COUNT(*)
9
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 9
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'qqq' AND c1 <= 'bbb';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'qqq' AND c1 <= 'ccc';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'qqq' AND c1 <= 'eee';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'qqq' AND c1 <= 'mmm';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'qqq' AND c1 <= 'nnn';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'qqq' AND c1 <= 'qqq';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'qqq' AND c1 <= 'xxx';
COUNT(*)
9
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 9
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'qqq' AND c1 <= 'zzz';
COUNT(*)
9
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 9
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'xxx' AND c1 <= 'bbb';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'xxx' AND c1 <= 'ccc';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'xxx' AND c1 <= 'eee';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'xxx' AND c1 <= 'mmm';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'xxx' AND c1 <= 'nnn';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'xxx' AND c1 <= 'qqq';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'xxx' AND c1 <= 'xxx';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'xxx' AND c1 <= 'zzz';
COUNT(*)
0
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'zzz' AND c1 <= 'bbb';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'zzz' AND c1 <= 'ccc';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'zzz' AND c1 <= 'eee';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'zzz' AND c1 <= 'mmm';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'zzz' AND c1 <= 'nnn';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'zzz' AND c1 <= 'qqq';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'zzz' AND c1 <= 'xxx';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 > 'zzz' AND c1 <= 'zzz';
COUNT(*)
0
Test left-closed, right-closed intervals
In some cases here the optimizer is smart enough not to call
ha_innobase::records_in_range() at all, so we get no warning containing
the value returned from btr_estimate_n_rows_in_range()
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'aaa' AND c1 <= 'bbb';
COUNT(*)
0
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'aaa' AND c1 <= 'ccc';
COUNT(*)
1
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 1
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'aaa' AND c1 <= 'eee';
COUNT(*)
1
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 1
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'aaa' AND c1 <= 'mmm';
COUNT(*)
10
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 10
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'aaa' AND c1 <= 'nnn';
COUNT(*)
11
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 11
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'aaa' AND c1 <= 'qqq';
COUNT(*)
11
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 11
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'aaa' AND c1 <= 'xxx';
COUNT(*)
20
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 20
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'aaa' AND c1 <= 'zzz';
COUNT(*)
20
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 20
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'ccc' AND c1 <= 'bbb';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'ccc' AND c1 <= 'ccc';
COUNT(*)
1
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'ccc' AND c1 <= 'eee';
COUNT(*)
1
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 1
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'ccc' AND c1 <= 'mmm';
COUNT(*)
10
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 10
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'ccc' AND c1 <= 'nnn';
COUNT(*)
11
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 11
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'ccc' AND c1 <= 'qqq';
COUNT(*)
11
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 11
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'ccc' AND c1 <= 'xxx';
COUNT(*)
20
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 20
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'ccc' AND c1 <= 'zzz';
COUNT(*)
20
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 20
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'eee' AND c1 <= 'bbb';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'eee' AND c1 <= 'ccc';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'eee' AND c1 <= 'eee';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'eee' AND c1 <= 'mmm';
COUNT(*)
9
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 9
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'eee' AND c1 <= 'nnn';
COUNT(*)
10
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 10
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'eee' AND c1 <= 'qqq';
COUNT(*)
10
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 10
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'eee' AND c1 <= 'xxx';
COUNT(*)
19
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 19
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'eee' AND c1 <= 'zzz';
COUNT(*)
19
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 19
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'mmm' AND c1 <= 'bbb';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'mmm' AND c1 <= 'ccc';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'mmm' AND c1 <= 'eee';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'mmm' AND c1 <= 'mmm';
COUNT(*)
1
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'mmm' AND c1 <= 'nnn';
COUNT(*)
2
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 2
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'mmm' AND c1 <= 'qqq';
COUNT(*)
2
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 2
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'mmm' AND c1 <= 'xxx';
COUNT(*)
11
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 11
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'mmm' AND c1 <= 'zzz';
COUNT(*)
11
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 11
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'nnn' AND c1 <= 'bbb';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'nnn' AND c1 <= 'ccc';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'nnn' AND c1 <= 'eee';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'nnn' AND c1 <= 'mmm';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'nnn' AND c1 <= 'nnn';
COUNT(*)
1
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'nnn' AND c1 <= 'qqq';
COUNT(*)
1
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 1
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'nnn' AND c1 <= 'xxx';
COUNT(*)
10
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 10
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'nnn' AND c1 <= 'zzz';
COUNT(*)
10
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 10
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'qqq' AND c1 <= 'bbb';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'qqq' AND c1 <= 'ccc';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'qqq' AND c1 <= 'eee';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'qqq' AND c1 <= 'mmm';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'qqq' AND c1 <= 'nnn';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'qqq' AND c1 <= 'qqq';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'qqq' AND c1 <= 'xxx';
COUNT(*)
9
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 9
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'qqq' AND c1 <= 'zzz';
COUNT(*)
9
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 9
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'xxx' AND c1 <= 'bbb';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'xxx' AND c1 <= 'ccc';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'xxx' AND c1 <= 'eee';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'xxx' AND c1 <= 'mmm';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'xxx' AND c1 <= 'nnn';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'xxx' AND c1 <= 'qqq';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'xxx' AND c1 <= 'xxx';
COUNT(*)
1
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'xxx' AND c1 <= 'zzz';
COUNT(*)
1
Warnings:
Warning 1230 btr_estimate_n_rows_in_range(): 1
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'zzz' AND c1 <= 'bbb';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'zzz' AND c1 <= 'ccc';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'zzz' AND c1 <= 'eee';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'zzz' AND c1 <= 'mmm';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'zzz' AND c1 <= 'nnn';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'zzz' AND c1 <= 'qqq';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'zzz' AND c1 <= 'xxx';
COUNT(*)
0
SELECT COUNT(*) FROM records_in_range_test WHERE c1 >= 'zzz' AND c1 <= 'zzz';
COUNT(*)
0
SET SESSION DEBUG='-d,print_btr_estimate_n_rows_in_range_return_value';
DROP TABLE records_in_range_test;