4 files changed, 64 insertions, 0 deletions
diff --git a/mysql-test/r/ps.result b/mysql-test/r/ps.result
index 81d85306e93..0050dfc0841 100644
--- a/mysql-test/r/ps.result
+++ b/mysql-test/r/ps.result
@@ -775,3 +775,28 @@ ERROR 42000: You have an error in your SQL syntax; check the manual that corresp
 select ? from t1;
 ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '? from t1' at line 1
 drop table t1;
+prepare stmt from "select @@time_zone";
+execute stmt;
+@@time_zone
+SYSTEM
+set @@time_zone:='Japan';
+execute stmt;
+@@time_zone
+Japan
+prepare stmt from "select @@tx_isolation";
+execute stmt;
+@@tx_isolation
+REPEATABLE-READ
+set transaction isolation level read committed;
+execute stmt;
+@@tx_isolation
+READ-COMMITTED
+set transaction isolation level serializable;
+execute stmt;
+@@tx_isolation
+SERIALIZABLE
+set @@tx_isolation=default;
+execute stmt;
+@@tx_isolation
+REPEATABLE-READ
+deallocate prepare stmt;
diff --git a/mysql-test/r/select.result b/mysql-test/r/select.result
index d0503d1b83b..d327b491ebf 100644
--- a/mysql-test/r/select.result
+++ b/mysql-test/r/select.result
@@ -2746,3 +2746,14 @@ WHERE
 COUNT(*)
 4
 drop table t1,t2,t3;
+create table t1 (f1 int);
+insert into t1 values (1),(NULL);
+create table t2 (f2 int, f3 int, f4 int);
+create index idx1 on t2 (f4);
+insert into t2 values (1,2,3),(2,4,6);
+select A.f2 from t1 left join t2 A on A.f2 = f1 where A.f3=(select min(f3)
+from  t2 C where A.f4 = C.f4) or A.f3 IS NULL;
+f2
+1
+NULL
+drop table t1,t2;
diff --git a/mysql-test/t/ps.test b/mysql-test/t/ps.test
index e8ea1dc373b..de92c67518e 100644
--- a/mysql-test/t/ps.test
+++ b/mysql-test/t/ps.test
@@ -811,3 +811,20 @@ select ??;
 select ? from t1;
 --enable_ps_protocol
 drop table t1;
+#
+# Bug#9359 "Prepared statements take snapshot of system vars at PREPARE
+# time"
+#
+prepare stmt from "select @@time_zone";
+execute stmt;
+set @@time_zone:='Japan';
+execute stmt;
+prepare stmt from "select @@tx_isolation";
+execute stmt;
+set transaction isolation level read committed;
+execute stmt;
+set transaction isolation level serializable;
+execute stmt;
+set @@tx_isolation=default;
+execute stmt;
+deallocate prepare stmt;
diff --git a/mysql-test/t/select.test b/mysql-test/t/select.test
index 712658a19a6..69343524928 100644
--- a/mysql-test/t/select.test
+++ b/mysql-test/t/select.test
@@ -2330,3 +2330,14 @@ WHERE
 
 drop table t1,t2,t3;
 
+#
+# Bug #11482 4.1.12 produces different resultset for a complex query 
+#             than in previous 4.1.x
+create table t1 (f1 int);
+insert into t1 values (1),(NULL);
+create table t2 (f2 int, f3 int, f4 int);
+create index idx1 on t2 (f4);
+insert into t2 values (1,2,3),(2,4,6);
+select A.f2 from t1 left join t2 A on A.f2 = f1 where A.f3=(select min(f3)
+from  t2 C where A.f4 = C.f4) or A.f3 IS NULL; 
+drop table t1,t2;