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MDEV-29242: Assertion `computed_weight == weight' failed SEL_ARG::verify_weight

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Make SEL_ARG::make_root() maintain SEL_ARG::weight.

Also, an unrelated change: fix dbug_print_sel_arg() to correctly
print SQL NULL for the right endpoint.
This commit is contained in:
Sergei Petrunia 2022-08-04 12:51:32 +03:00
parent ea12dafe65
commit 3b071bad19
3 changed files with 22 additions and 1 deletions
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9
mysql-test/main/range_notembedded.result
View file

@ -248,3 +248,12 @@ WHERE
(help_topic_id < '2' OR help_topic_id != 8 OR help_topic_id < 1) AND
help_keyword_id = help_topic_id;
help_topic_id help_keyword_id
#
# MDEV-29242: Assertion `computed_weight == weight' failed SEL_ARG::verify_weight
#
CREATE TABLE t1 (id INT, KEY (id));
INSERT INTO t1 VALUES (1),(5);
SELECT id FROM t1 WHERE id IS NULL OR id NOT BETWEEN 1 AND 4;
id
5
DROP TABLE t1;

9
mysql-test/main/range_notembedded.test
View file

@ -150,3 +150,12 @@ FROM mysql.help_relation
WHERE
(help_topic_id < '2' OR help_topic_id != 8 OR help_topic_id < 1) AND
help_keyword_id = help_topic_id;
--echo #
--echo # MDEV-29242: Assertion `computed_weight == weight' failed SEL_ARG::verify_weight
--echo #
CREATE TABLE t1 (id INT, KEY (id));
INSERT INTO t1 VALUES (1),(5);
SELECT id FROM t1 WHERE id IS NULL OR id NOT BETWEEN 1 AND 4;
DROP TABLE t1;

5
sql/opt_range.cc
View file

@ -1901,7 +1901,9 @@ inline void SEL_ARG::make_root()
left=right= &null_element;
color=BLACK;
next=prev=0;
use_count=0; elements=1;
use_count=0;
elements=1;
weight= 1 + (next_key_part? next_key_part->weight : 0);
}
SEL_ARG::SEL_ARG(Field *f,const uchar *min_value_arg,
@ -16153,6 +16155,7 @@ const char *dbug_print_sel_arg(SEL_ARG *sel_arg)
out.append("+inf");
else
{
buf.length(0);
print_sel_arg_key(sel_arg->field, sel_arg->max_value, &buf);
out.append(buf);
}