MDEV-486 LP BUG#1010116 fix.

Link view/derived table fields to a real table to check turning the table record to null row.

Item_direct_view_ref wrapper now checks if table is turned to null row.

3 files changed, 65 insertions, 4 deletions

diff --git a/mysql-test/r/derived_view.result b/mysql-test/r/derived_view.result
index a4f7a71dcb5..6061fbb8800 100644
--- a/mysql-test/r/derived_view.result
+++ b/mysql-test/r/derived_view.result
@@ -1677,7 +1677,6 @@ SELECT t.b, t.c, t1.a
 FROM t1, (SELECT t2.b, t2.c FROM t3 RIGHT JOIN t2 ON t2.a = t3.b) AS t
 WHERE t.b AND t.c = t1.a;
 b	c	a
-8	c	c
 EXPLAIN EXTENDED
 SELECT t.b, t.c, t1.a
 FROM t1, (SELECT t2.b, t2.c FROM t3 RIGHT JOIN t2 ON t2.a = t3.b) AS t
@@ -1692,7 +1691,6 @@ SELECT t.b, t.c, t1.a
 FROM t1, (SELECT t2.b, t2.c FROM t3 RIGHT JOIN t2 ON t2.a = t3.b) AS t
 WHERE t.b <> 0 AND t.c = t1.a;
 b	c	a
-8	c	c
 INSERT INTO t3 VALUES (100), (200);
 EXPLAIN EXTENDED
 SELECT t.b, t.c, t1.a
@@ -1708,7 +1706,7 @@ SELECT t.b, t.c, t1.a
 FROM t1, (SELECT t2.b, t2.c FROM t3 RIGHT JOIN t2 ON t2.a = t3.b) AS t
 WHERE t.b AND t.c = t1.a;
 b	c	a
-8	c	c
+NULL	NULL	c
 EXPLAIN EXTENDED
 SELECT t.b, t.c, t1.a
 FROM t1, (SELECT t2.b, t2.c FROM t3 RIGHT JOIN t2 ON t2.a = t3.b) AS t
@@ -1723,7 +1721,7 @@ SELECT t.b, t.c, t1.a
 FROM t1, (SELECT t2.b, t2.c FROM t3 RIGHT JOIN t2 ON t2.a = t3.b) AS t
 WHERE t.b <> 0 AND t.c = t1.a;
 b	c	a
-8	c	c
+NULL	NULL	c
 SET optimizer_switch=@save_optimizer_switch;
 DROP TABLE t1,t2,t3;
 #
diff --git a/mysql-test/r/view.result b/mysql-test/r/view.result
index 56598583bb6..fc60d70317e 100644
--- a/mysql-test/r/view.result
+++ b/mysql-test/r/view.result
@@ -4485,6 +4485,39 @@ a
 1
 drop view v2,v1;
 drop table t1;
+#
+# MDEV-486 LP BUG#1010116 Incorrect query results in
+# view and derived tables
+#
+SELECT
+`Derived1`.`id`,
+`Derived2`.`Val1`
+FROM (select 30631 as `id`) AS `Derived1` LEFT OUTER JOIN (SELECT
+2 as `id`,
+1 AS `Val1`
+FROM (select 30631 as `id`) AS `Derived3`) AS `Derived2` ON `Derived1`.`id` = `Derived2`.`id`;
+id	Val1
+30631	NULL
+create table t1 ( id int );
+insert into t1 values (30631);
+create table t2 ( id int );
+insert into t2 values (30631);
+create algorithm=MERGE view v2 as select 2 as id, 1 as val1 from t2;
+select t1.*, v2.* from t1 left join v2 on t1.id = v2.id;
+id	id	val1
+30631	NULL	NULL
+drop view v2;
+drop table t1,t2;
+create table t1 ( id int );
+insert into t1 values (30631);
+create table t2 ( id int );
+insert into t2 values (30631);
+create algorithm=MERGE view v2 as select 2 as id, id is null as bbb, id as iddqd, 1 as val1 from t2;
+select t1.*, v2.* from t1 left join v2 on t1.id = v2.id;
+id	id	bbb	iddqd	val1
+30631	NULL	NULL	NULL	NULL
+drop view v2;
+drop table t1,t2;
 # -----------------------------------------------------------------
 # -- End of 5.3 tests.
 # -----------------------------------------------------------------
diff --git a/mysql-test/t/view.test b/mysql-test/t/view.test
index 6f11d6909ea..bd3b485034d 100644
--- a/mysql-test/t/view.test
+++ b/mysql-test/t/view.test
@@ -4433,6 +4433,36 @@ select * from t1;
 drop view v2,v1;
 drop table t1;
 
+--echo #
+--echo # MDEV-486 LP BUG#1010116 Incorrect query results in
+--echo # view and derived tables
+--echo #
+
+SELECT
+`Derived1`.`id`,
+`Derived2`.`Val1`
+FROM (select 30631 as `id`) AS `Derived1` LEFT OUTER JOIN (SELECT
+2 as `id`,
+1 AS `Val1`
+FROM (select 30631 as `id`) AS `Derived3`) AS `Derived2` ON `Derived1`.`id` = `Derived2`.`id`;
+
+create table t1 ( id int );
+insert into t1 values (30631);
+create table t2 ( id int );
+insert into t2 values (30631);
+create algorithm=MERGE view v2 as select 2 as id, 1 as val1 from t2;
+select t1.*, v2.* from t1 left join v2 on t1.id = v2.id;
+drop view v2;
+drop table t1,t2;
+
+create table t1 ( id int );
+insert into t1 values (30631);
+create table t2 ( id int );
+insert into t2 values (30631);
+create algorithm=MERGE view v2 as select 2 as id, id is null as bbb, id as iddqd, 1 as val1 from t2;
+select t1.*, v2.* from t1 left join v2 on t1.id = v2.id;
+drop view v2;
+drop table t1,t2;
 --echo # -----------------------------------------------------------------
 --echo # -- End of 5.3 tests.
 --echo # -----------------------------------------------------------------