mirror of
https://github.com/MariaDB/server.git
synced 2025-07-30 16:24:05 +03:00
Merge branch '10.6' into 10.11
This commit is contained in:
Sergei Golubchik
@ -3733,6 +3733,126 @@ id select_type table type possible_keys key key_len ref rows Extra
|
||||
1 PRIMARY t2 ALL NULL NULL NULL NULL 2
|
||||
2 DEPENDENT SUBQUERY t1 eq_ref PRIMARY PRIMARY 4 test.t2.b 1 Using where
|
||||
DROP TABLE t1,t2;
|
||||
#
|
||||
# MDEV-29681 Server crashes when optimizing SQL with ORDER BY
|
||||
#
|
||||
CREATE TABLE t1 (b INT);
|
||||
CREATE TABLE t2 (a INT, c INT);
|
||||
# First test empty tables
|
||||
EXPLAIN EXTENDED (SELECT * FROM t1 JOIN t2 ON a=b LIMIT 3) ORDER BY a+1;
|
||||
id select_type table type possible_keys key key_len ref rows filtered Extra
|
||||
1 PRIMARY <derived2> system NULL NULL NULL NULL 0 0.00 Const row not found
|
||||
2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL no matching row in const table
|
||||
Warnings:
|
||||
Note 1003 /* select#1 */ select NULL AS `b`,NULL AS `a`,NULL AS `c` from ((/* select#2 */ select NULL AS `b`,NULL AS `a`,NULL AS `c` from `test`.`t1` join `test`.`t2` where 0 limit 3)) `__2` order by NULL + 1
|
||||
EXPLAIN EXTENDED (SELECT * FROM t1 JOIN t2 ON a=b LIMIT 3) ORDER BY a=2;
|
||||
id select_type table type possible_keys key key_len ref rows filtered Extra
|
||||
1 PRIMARY <derived2> system NULL NULL NULL NULL 0 0.00 Const row not found
|
||||
2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL no matching row in const table
|
||||
Warnings:
|
||||
Note 1003 /* select#1 */ select NULL AS `b`,NULL AS `a`,NULL AS `c` from ((/* select#2 */ select NULL AS `b`,NULL AS `a`,NULL AS `c` from `test`.`t1` join `test`.`t2` where 0 limit 3)) `__2` order by NULL = 2
|
||||
EXPLAIN EXTENDED (SELECT * FROM t1 JOIN t2 ON a=b LIMIT 3)
|
||||
ORDER BY a+1, a-b DESC, c<>a;
|
||||
id select_type table type possible_keys key key_len ref rows filtered Extra
|
||||
1 PRIMARY <derived2> system NULL NULL NULL NULL 0 0.00 Const row not found
|
||||
2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL no matching row in const table
|
||||
Warnings:
|
||||
Note 1003 /* select#1 */ select NULL AS `b`,NULL AS `a`,NULL AS `c` from ((/* select#2 */ select NULL AS `b`,NULL AS `a`,NULL AS `c` from `test`.`t1` join `test`.`t2` where 0 limit 3)) `__2` order by NULL + 1,NULL - NULL desc,NULL <> NULL
|
||||
# Insert some data
|
||||
INSERT INTO t1 VALUES (1),(2),(3),(4);
|
||||
INSERT INTO t2 VALUES (1,1),(2,2),(3,3),(4,4);
|
||||
(SELECT * FROM t1 JOIN t2 ON a=b LIMIT 3) ORDER BY a=b, a-10 DESC, b+a, c+a+a+b;
|
||||
b a c
|
||||
1 1 1
|
||||
2 2 2
|
||||
3 3 3
|
||||
(SELECT * FROM t1 JOIN t2 ON a=b LIMIT 3) ORDER BY a=2;
|
||||
b a c
|
||||
1 1 1
|
||||
2 2 2
|
||||
3 3 3
|
||||
EXPLAIN EXTENDED (SELECT * FROM t1 JOIN t2 ON a=b LIMIT 3)
|
||||
ORDER BY a=b, a-10, b+a, c+a+a+b;
|
||||
id select_type table type possible_keys key key_len ref rows filtered Extra
|
||||
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 3 100.00 Using filesort
|
||||
2 DERIVED t1 ALL NULL NULL NULL NULL 4 100.00
|
||||
2 DERIVED t2 ALL NULL NULL NULL NULL 4 100.00 Using where; Using join buffer (flat, BNL join)
|
||||
Warnings:
|
||||
Note 1003 /* select#1 */ select `__2`.`b` AS `b`,`__2`.`a` AS `a`,`__2`.`c` AS `c` from ((/* select#2 */ select `test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`c` AS `c` from `test`.`t1` join `test`.`t2` where `test`.`t2`.`a` = `test`.`t1`.`b` limit 3)) `__2` order by `__2`.`a` = `__2`.`b`,`__2`.`a` - 10,`__2`.`b` + `__2`.`a`,`__2`.`c` + `__2`.`a` + `__2`.`a` + `__2`.`b`
|
||||
# When there is no LIMIT clause the derived table must be merged
|
||||
(SELECT * FROM t1 JOIN t2 ON a=b) ORDER BY a+16, b+a, c<>b;
|
||||
b a c
|
||||
1 1 1
|
||||
2 2 2
|
||||
3 3 3
|
||||
4 4 4
|
||||
EXPLAIN EXTENDED (SELECT * FROM t1 JOIN t2 ON a=b) ORDER BY a+16 DESC, b+a, c<>b;
|
||||
id select_type table type possible_keys key key_len ref rows filtered Extra
|
||||
1 SIMPLE t1 ALL NULL NULL NULL NULL 4 100.00 Using temporary; Using filesort
|
||||
1 SIMPLE t2 ALL NULL NULL NULL NULL 4 100.00 Using where; Using join buffer (flat, BNL join)
|
||||
Warnings:
|
||||
Note 1003 (select `test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`c` AS `c` from `test`.`t1` join `test`.`t2` where `test`.`t2`.`a` = `test`.`t1`.`b` order by `test`.`t2`.`a` + 16 desc,`test`.`t1`.`b` + `test`.`t2`.`a`,`test`.`t2`.`c` <> `test`.`t1`.`b`)
|
||||
# Test UNIONs:
|
||||
(SELECT * FROM t1 JOIN t2 ON a=b UNION
|
||||
SELECT * FROM t1 JOIN t2 ON a!=b
|
||||
LIMIT 3)
|
||||
ORDER BY a+16, b+a, c<>b;
|
||||
b a c
|
||||
1 1 1
|
||||
2 2 2
|
||||
3 3 3
|
||||
EXPLAIN EXTENDED (SELECT * FROM t1 JOIN t2 ON a=b UNION
|
||||
SELECT * FROM t1 JOIN t2 ON a!=b
|
||||
LIMIT 3)
|
||||
ORDER BY a+16, b+a, c<>b;
|
||||
id select_type table type possible_keys key key_len ref rows filtered Extra
|
||||
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 32 100.00 Using filesort
|
||||
2 DERIVED t1 ALL NULL NULL NULL NULL 4 100.00
|
||||
2 DERIVED t2 ALL NULL NULL NULL NULL 4 100.00 Using where; Using join buffer (flat, BNL join)
|
||||
3 UNION t1 ALL NULL NULL NULL NULL 4 100.00
|
||||
3 UNION t2 ALL NULL NULL NULL NULL 4 100.00 Using where; Using join buffer (flat, BNL join)
|
||||
NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL
|
||||
Warnings:
|
||||
Note 1003 /* select#1 */ select `__3`.`b` AS `b`,`__3`.`a` AS `a`,`__3`.`c` AS `c` from (/* select#2 */ select `test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`c` AS `c` from `test`.`t1` join `test`.`t2` where `test`.`t2`.`a` = `test`.`t1`.`b` union /* select#3 */ select `test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`c` AS `c` from `test`.`t1` join `test`.`t2` where `test`.`t2`.`a` <> `test`.`t1`.`b` limit 3) `__3` order by `__3`.`a` + 16,`__3`.`b` + `__3`.`a`,`__3`.`c` <> `__3`.`b`
|
||||
(SELECT * FROM t1 JOIN t2 ON a=b UNION
|
||||
SELECT NULL, NULL, NULL
|
||||
LIMIT 3)
|
||||
ORDER BY b-a-c;
|
||||
b a c
|
||||
1 1 1
|
||||
2 2 2
|
||||
3 3 3
|
||||
EXPLAIN EXTENDED (SELECT * FROM t1 JOIN t2 ON a=b UNION
|
||||
SELECT NULL, NULL, NULL
|
||||
LIMIT 3)
|
||||
ORDER BY b-a-c;
|
||||
id select_type table type possible_keys key key_len ref rows filtered Extra
|
||||
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 16 100.00 Using filesort
|
||||
2 DERIVED t1 ALL NULL NULL NULL NULL 4 100.00
|
||||
2 DERIVED t2 ALL NULL NULL NULL NULL 4 100.00 Using where; Using join buffer (flat, BNL join)
|
||||
3 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
||||
NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL
|
||||
Warnings:
|
||||
Note 1003 /* select#1 */ select `__3`.`b` AS `b`,`__3`.`a` AS `a`,`__3`.`c` AS `c` from (/* select#2 */ select `test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`c` AS `c` from `test`.`t1` join `test`.`t2` where `test`.`t2`.`a` = `test`.`t1`.`b` union /* select#3 */ select NULL AS `NULL`,NULL AS `NULL`,NULL AS `NULL` limit 3) `__3` order by `__3`.`b` - `__3`.`a` - `__3`.`c`
|
||||
(SELECT * FROM t1 JOIN t2 ON a=b UNION
|
||||
SELECT NULL, NULL, NULL
|
||||
ORDER BY a LIMIT 3)
|
||||
ORDER BY b-a-c LIMIT 1;
|
||||
b a c
|
||||
NULL NULL NULL
|
||||
EXPLAIN EXTENDED (SELECT * FROM t1 JOIN t2 ON a=b UNION
|
||||
SELECT NULL, NULL, NULL
|
||||
ORDER BY a LIMIT 3)
|
||||
ORDER BY b-a-c LIMIT 1;
|
||||
id select_type table type possible_keys key key_len ref rows filtered Extra
|
||||
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 16 100.00 Using filesort
|
||||
2 DERIVED t1 ALL NULL NULL NULL NULL 4 100.00
|
||||
2 DERIVED t2 ALL NULL NULL NULL NULL 4 100.00 Using where; Using join buffer (flat, BNL join)
|
||||
3 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
|
||||
NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL NULL Using filesort
|
||||
Warnings:
|
||||
Note 1003 /* select#1 */ select `__3`.`b` AS `b`,`__3`.`a` AS `a`,`__3`.`c` AS `c` from (/* select#2 */ select `test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`c` AS `c` from `test`.`t1` join `test`.`t2` where `test`.`t2`.`a` = `test`.`t1`.`b` union /* select#3 */ select NULL AS `NULL`,NULL AS `NULL`,NULL AS `NULL` order by `a` limit 3) `__3` order by `__3`.`b` - `__3`.`a` - `__3`.`c` limit 1
|
||||
DROP TABLE t1, t2;
|
||||
# End of 10.4 tests
|
||||
#
|
||||
# MDEV-21655: Server crashes in my_qsort2 / Filesort_buffer::sort_buffer
|
||||
|
||||
Reference in New Issue
Block a user