Fixed bug mdev-11096.

1. When min/max value is provided the null flag for it must be set to 0
in the bitmap Culumn_statistics::column_stat_nulls.
2. When the calculation of the selectivity of the range condition
over a column requires min and max values for the column then we
have to check that these values are provided.

1 files changed, 24 insertions, 0 deletions

diff --git a/mysql-test/r/selectivity.result b/mysql-test/r/selectivity.result
index 620bdc6bd50..c2364e11ceb 100644
--- a/mysql-test/r/selectivity.result
+++ b/mysql-test/r/selectivity.result
@@ -1446,3 +1446,27 @@ a	b	i
 set optimizer_use_condition_selectivity=@save_optimizer_use_condition_selectivity;
 DROP TABLE t1,t2;
 set use_stat_tables=@save_use_stat_tables;
+#
+# Bug mdev-11096: range condition over column without statistical data
+#
+set use_stat_tables='preferably';
+set optimizer_use_condition_selectivity=3;
+create table t1(col1 char(32));
+insert into t1 values ('a'),('b'),('c'),('d'), ('e'),('f'),('g'),('h');
+analyze table t1 persistent for columns () indexes ();
+Table	Op	Msg_type	Msg_text
+test.t1	analyze	status	Engine-independent statistics collected
+test.t1	analyze	status	OK
+explain extended 
+select * from t1 where col1 > 'b' and col1 < 'e';
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	8	100.00	Using where
+Warnings:
+Note	1003	select `test`.`t1`.`col1` AS `col1` from `test`.`t1` where ((`test`.`t1`.`col1` > 'b') and (`test`.`t1`.`col1` < 'e'))
+select * from t1 where col1 > 'b' and col1 < 'e';
+col1
+c
+d
+drop table t1;
+set optimizer_use_condition_selectivity=@save_optimizer_use_condition_selectivity;
+set use_stat_tables=@save_use_stat_tables;