diff options
Diffstat (limited to 'mysql-test/main/order_by.result')
| -rw-r--r-- | mysql-test/main/order_by.result | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/mysql-test/main/order_by.result b/mysql-test/main/order_by.result index bc65f67f..9d587c06 100644 --- a/mysql-test/main/order_by.result +++ b/mysql-test/main/order_by.result @@ -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 |