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Olav Sandstaa
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Bug#18636076 DEBUG CRASH ON PLAN_CHANGE_WATCHDOG::~PLAN_CHANGE_WATCHDOG
Test case for Bug#18636076. After the fix for Bug 18035906 this assert is no longer hit.
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‎mysql-test/include/order_by.inc

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Original file line numberDiff line numberDiff line change
@@ -1825,4 +1825,38 @@ let $query=SELECT DISTINCT a FROM t1 WHERE b=1 ORDER BY 1;
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eval EXPLAIN $query;
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eval $query;
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DROP TABLE t1;
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--echo #
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--echo # Bug#18636076 DEBUG CRASH ON
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--echo # PLAN_CHANGE_WATCHDOG::~PLAN_CHANGE_WATCHDOG
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--echo #
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# Both tables must be created using MyISAM in order to reproduce assert
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CREATE TABLE t1 (
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pk INTEGER NOT NULL,
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PRIMARY KEY (pk)
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) ENGINE=MyISAM;
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INSERT INTO t1 VALUES (1), (2), (3);
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CREATE VIEW view_t1 AS SELECT * FROM t1;
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CREATE TABLE t2 (
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i1 INTEGER NOT NULL
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) ENGINE=MyISAM;
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let query=
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SELECT DISTINCT t2.i1, view_t1.pk
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FROM view_t1 LEFT JOIN t2
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ON view_t1.pk = t2.i1
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WHERE (view_t1.pk <= 204 AND t2.i1 != 3)
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OR view_t1.pk BETWEEN 1 AND 7
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ORDER BY t2.i1;
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eval EXPLAIN $query;
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eval $query;
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DROP VIEW view_t1;
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DROP TABLE t1, t2;
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SET sql_mode = default;

‎mysql-test/r/order_by_all.result

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Original file line numberDiff line numberDiff line change
@@ -2801,5 +2801,41 @@ Note 1003 /* select#1 */ select distinct `test`.`t1`.`a` AS `a` from `test`.`t1`
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SELECT DISTINCT a FROM t1 WHERE b=1 ORDER BY 1;
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a
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DROP TABLE t1;
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#
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# Bug#18636076 DEBUG CRASH ON
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# PLAN_CHANGE_WATCHDOG::~PLAN_CHANGE_WATCHDOG
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#
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CREATE TABLE t1 (
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pk INTEGER NOT NULL,
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PRIMARY KEY (pk)
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) ENGINE=MyISAM;
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INSERT INTO t1 VALUES (1), (2), (3);
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CREATE VIEW view_t1 AS SELECT * FROM t1;
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CREATE TABLE t2 (
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i1 INTEGER NOT NULL
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) ENGINE=MyISAM;
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EXPLAIN SELECT DISTINCT t2.i1, view_t1.pk
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FROM view_t1 LEFT JOIN t2
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ON view_t1.pk = t2.i1
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WHERE (view_t1.pk <= 204 AND t2.i1 != 3)
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OR view_t1.pk BETWEEN 1 AND 7
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ORDER BY t2.i1;
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id select_type table partitions type possible_keys key key_len ref rows filtered Extra
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1 SIMPLE t2 NULL system NULL NULL NULL NULL 0 0.00 const row not found
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1 SIMPLE t1 NULL index PRIMARY PRIMARY 4 NULL 3 100.00 Using where; Using index
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Warnings:
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Note 1003 /* select#1 */ select distinct NULL AS `i1`,`test`.`t1`.`pk` AS `pk` from `test`.`t1` where (((`test`.`t1`.`pk` <= 204) and (NULL <> 3)) or (`test`.`t1`.`pk` between 1 and 7)) order by NULL
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SELECT DISTINCT t2.i1, view_t1.pk
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FROM view_t1 LEFT JOIN t2
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ON view_t1.pk = t2.i1
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WHERE (view_t1.pk <= 204 AND t2.i1 != 3)
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OR view_t1.pk BETWEEN 1 AND 7
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ORDER BY t2.i1;
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i1 pk
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NULL 1
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NULL 2
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NULL 3
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DROP VIEW view_t1;
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DROP TABLE t1, t2;
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SET sql_mode = default;
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set optimizer_switch=default;

‎mysql-test/r/order_by_icp_mrr.result

Lines changed: 36 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -2801,5 +2801,41 @@ Note 1003 /* select#1 */ select distinct `test`.`t1`.`a` AS `a` from `test`.`t1`
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SELECT DISTINCT a FROM t1 WHERE b=1 ORDER BY 1;
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a
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DROP TABLE t1;
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#
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# Bug#18636076 DEBUG CRASH ON
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# PLAN_CHANGE_WATCHDOG::~PLAN_CHANGE_WATCHDOG
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#
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CREATE TABLE t1 (
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pk INTEGER NOT NULL,
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PRIMARY KEY (pk)
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) ENGINE=MyISAM;
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INSERT INTO t1 VALUES (1), (2), (3);
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CREATE VIEW view_t1 AS SELECT * FROM t1;
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CREATE TABLE t2 (
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i1 INTEGER NOT NULL
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) ENGINE=MyISAM;
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EXPLAIN SELECT DISTINCT t2.i1, view_t1.pk
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FROM view_t1 LEFT JOIN t2
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ON view_t1.pk = t2.i1
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WHERE (view_t1.pk <= 204 AND t2.i1 != 3)
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OR view_t1.pk BETWEEN 1 AND 7
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ORDER BY t2.i1;
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id select_type table partitions type possible_keys key key_len ref rows filtered Extra
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1 SIMPLE t2 NULL system NULL NULL NULL NULL 0 0.00 const row not found
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1 SIMPLE t1 NULL index PRIMARY PRIMARY 4 NULL 3 100.00 Using where; Using index
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Warnings:
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Note 1003 /* select#1 */ select distinct NULL AS `i1`,`test`.`t1`.`pk` AS `pk` from `test`.`t1` where (((`test`.`t1`.`pk` <= 204) and (NULL <> 3)) or (`test`.`t1`.`pk` between 1 and 7)) order by NULL
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SELECT DISTINCT t2.i1, view_t1.pk
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FROM view_t1 LEFT JOIN t2
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ON view_t1.pk = t2.i1
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WHERE (view_t1.pk <= 204 AND t2.i1 != 3)
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OR view_t1.pk BETWEEN 1 AND 7
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ORDER BY t2.i1;
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i1 pk
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NULL 1
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NULL 2
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NULL 3
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DROP VIEW view_t1;
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DROP TABLE t1, t2;
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SET sql_mode = default;
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set optimizer_switch=default;

‎mysql-test/r/order_by_none.result

Lines changed: 36 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -2800,5 +2800,41 @@ Note 1003 /* select#1 */ select distinct `test`.`t1`.`a` AS `a` from `test`.`t1`
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SELECT DISTINCT a FROM t1 WHERE b=1 ORDER BY 1;
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a
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DROP TABLE t1;
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#
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# Bug#18636076 DEBUG CRASH ON
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# PLAN_CHANGE_WATCHDOG::~PLAN_CHANGE_WATCHDOG
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#
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CREATE TABLE t1 (
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pk INTEGER NOT NULL,
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PRIMARY KEY (pk)
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) ENGINE=MyISAM;
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INSERT INTO t1 VALUES (1), (2), (3);
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CREATE VIEW view_t1 AS SELECT * FROM t1;
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CREATE TABLE t2 (
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i1 INTEGER NOT NULL
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) ENGINE=MyISAM;
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EXPLAIN SELECT DISTINCT t2.i1, view_t1.pk
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FROM view_t1 LEFT JOIN t2
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ON view_t1.pk = t2.i1
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WHERE (view_t1.pk <= 204 AND t2.i1 != 3)
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OR view_t1.pk BETWEEN 1 AND 7
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ORDER BY t2.i1;
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id select_type table partitions type possible_keys key key_len ref rows filtered Extra
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1 SIMPLE t2 NULL system NULL NULL NULL NULL 0 0.00 const row not found
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1 SIMPLE t1 NULL index PRIMARY PRIMARY 4 NULL 3 100.00 Using where; Using index
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Warnings:
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Note 1003 /* select#1 */ select distinct NULL AS `i1`,`test`.`t1`.`pk` AS `pk` from `test`.`t1` where (((`test`.`t1`.`pk` <= 204) and (NULL <> 3)) or (`test`.`t1`.`pk` between 1 and 7)) order by NULL
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SELECT DISTINCT t2.i1, view_t1.pk
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FROM view_t1 LEFT JOIN t2
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ON view_t1.pk = t2.i1
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WHERE (view_t1.pk <= 204 AND t2.i1 != 3)
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OR view_t1.pk BETWEEN 1 AND 7
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ORDER BY t2.i1;
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i1 pk
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NULL 1
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NULL 2
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NULL 3
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DROP VIEW view_t1;
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DROP TABLE t1, t2;
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SET sql_mode = default;
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set optimizer_switch=default;

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