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Bug#40494: MYSQL server crashes on range access with partitioning and

Browse Source 
order by

Problem was that the first index read was unordered,
and the next was ordered, resulting in use of
uninitialized data.

Solution was to use the correct variable to see if
the 'next' call should be ordered or not.

mysql-test/r/partition.result:
  Bug#40494: MYSQL server crashes on range access with
  partitioning and order by
  
  Added test case for the bug.
mysql-test/t/partition.test:
  Bug#40494: MYSQL server crashes on range access with
  partitioning and order by
  
  Added test case for the bug.
sql/ha_partition.cc:
  Bug#40494: MYSQL server crashes on range access with
  partitioning and order by
  
  Used the wrong variable to decide to continue with
  ordered or unordered scan.
This commit is contained in:
Mattias Jonsson
2008-11-05 15:53:28 +01:00
parent c780c2a24c
commit bcd88c9f9e
3 changed files with 104 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

74
mysql-test/r/partition.result
View File

@ -1,4 +1,78 @@
drop table if exists t1, t2;
CREATE TABLE t1 (a INT NOT NULL, KEY(a))
PARTITION BY RANGE(a)
(PARTITION p1 VALUES LESS THAN (200), PARTITION pmax VALUES LESS THAN MAXVALUE);
INSERT INTO t1 VALUES (2), (40), (40), (70), (60), (90), (199);
SELECT a FROM t1 WHERE a BETWEEN 60 AND 95 ORDER BY a ASC;
a
60
70
90
SELECT a FROM t1 WHERE a BETWEEN 60 AND 95;
a
60
70
90
INSERT INTO t1 VALUES (200), (250), (210);
SELECT a FROM t1 WHERE a BETWEEN 60 AND 220 ORDER BY a ASC;
a
60
70
90
199
200
210
SELECT a FROM t1 WHERE a BETWEEN 200 AND 220 ORDER BY a ASC;
a
200
210
SELECT a FROM t1 WHERE a BETWEEN 60 AND 95 ORDER BY a DESC;
a
90
70
60
SELECT a FROM t1 WHERE a BETWEEN 60 AND 220 ORDER BY a DESC;
a
210
200
199
90
70
60
SELECT a FROM t1 WHERE a BETWEEN 200 AND 220 ORDER BY a DESC;
a
210
200
SELECT a FROM t1 WHERE a BETWEEN 60 AND 220;
a
199
200
210
60
70
90
SELECT a FROM t1 WHERE a BETWEEN 200 AND 220;
a
200
210
SELECT a FROM t1 WHERE a BETWEEN 60 AND 95;
a
60
70
90
SELECT a FROM t1 WHERE a BETWEEN 60 AND 220;
a
199
200
210
60
70
90
SELECT a FROM t1 WHERE a BETWEEN 200 AND 220;
a
200
210
DROP TABLE t1;
CREATE TABLE t1 (
a INT NOT NULL,
b MEDIUMINT NOT NULL,

29
mysql-test/t/partition.test
View File

@ -14,6 +14,35 @@
drop table if exists t1, t2;
--enable_warnings
#
# Bug#40494: Crash MYSQL server crashes on range access with partitioning
# and order by
#
CREATE TABLE t1 (a INT NOT NULL, KEY(a))
PARTITION BY RANGE(a)
(PARTITION p1 VALUES LESS THAN (200), PARTITION pmax VALUES LESS THAN MAXVALUE);
INSERT INTO t1 VALUES (2), (40), (40), (70), (60), (90), (199);
SELECT a FROM t1 WHERE a BETWEEN 60 AND 95 ORDER BY a ASC;
--sorted_result
SELECT a FROM t1 WHERE a BETWEEN 60 AND 95;
INSERT INTO t1 VALUES (200), (250), (210);
SELECT a FROM t1 WHERE a BETWEEN 60 AND 220 ORDER BY a ASC;
SELECT a FROM t1 WHERE a BETWEEN 200 AND 220 ORDER BY a ASC;
SELECT a FROM t1 WHERE a BETWEEN 60 AND 95 ORDER BY a DESC;
SELECT a FROM t1 WHERE a BETWEEN 60 AND 220 ORDER BY a DESC;
SELECT a FROM t1 WHERE a BETWEEN 200 AND 220 ORDER BY a DESC;
--sorted_result
SELECT a FROM t1 WHERE a BETWEEN 60 AND 220;
--sorted_result
SELECT a FROM t1 WHERE a BETWEEN 200 AND 220;
--sorted_result
SELECT a FROM t1 WHERE a BETWEEN 60 AND 95;
--sorted_result
SELECT a FROM t1 WHERE a BETWEEN 60 AND 220;
--sorted_result
SELECT a FROM t1 WHERE a BETWEEN 200 AND 220;
DROP TABLE t1;
#
# Bug35931: Index search may return duplicates
#