merged

BitKeeper/etc/ignore:
  auto-union
BitKeeper/etc/logging_ok:
  auto-union
Docs/Support/texi2html:
  Auto merged
client/mysqltest.c:
  Auto merged
innobase/lock/lock0lock.c:
  Auto merged
innobase/row/row0sel.c:
  Auto merged
mysql-test/r/fulltext.result:
  Auto merged
mysql-test/r/heap.result:
  Auto merged
mysql-test/r/key.result:
  Auto merged
mysql-test/r/myisam.result:
  Auto merged
mysql-test/r/rpl000015.result:
  Auto merged
mysql-test/r/rpl_log_pos.result:
  Auto merged
mysql-test/r/rpl_rotate_logs.result:
  Auto merged
mysql-test/r/subselect.result:
  Auto merged
mysql-test/r/type_blob.result:
  Auto merged
mysql-test/t/key.test:
  Auto merged
mysql-test/t/myisam.test:
  Auto merged
mysql-test/t/rpl000015.test:
  Auto merged
mysql-test/t/rpl_log_pos.test:
  Auto merged
mysql-test/t/rpl_rotate_logs.test:
  Auto merged
mysql-test/t/subselect.test:
  Auto merged
sql/ha_ndbcluster.cc:
  Auto merged
sql/ha_ndbcluster.h:
  Auto merged
sql/handler.cc:
  Auto merged
sql/item.h:
  Auto merged
sql/item_cmpfunc.cc:
  Auto merged
sql/set_var.cc:
  Auto merged
sql/sql_do.cc:
  Auto merged
sql/sql_table.cc:
  Auto merged

1 files changed, 21 insertions, 0 deletions

diff --git a/mysql-test/r/ps.result b/mysql-test/r/ps.result
index e0f230fa579..a4c16206b11 100644
--- a/mysql-test/r/ps.result
+++ b/mysql-test/r/ps.result
@@ -450,6 +450,27 @@ PREPARE stmt FROM 'UPDATE t1 AS P1 INNER JOIN (SELECT N FROM t1 GROUP BY N HAVIN
 EXECUTE stmt;
 DEALLOCATE PREPARE stmt;
 DROP TABLE t1;
+prepare stmt from "select ? is null, ? is not null, ?";
+select @no_such_var is null, @no_such_var is not null, @no_such_var;
+@no_such_var is null	@no_such_var is not null	@no_such_var
+1	0	NULL
+execute stmt using @no_such_var, @no_such_var, @no_such_var;
+? is null	? is not null	?
+1	0	NULL
+set @var='abc';
+select @var is null, @var is not null, @var;
+@var is null	@var is not null	@var
+0	1	abc
+execute stmt using @var, @var, @var;
+? is null	? is not null	?
+0	1	abc
+set @var=null;
+select @var is null, @var is not null, @var;
+@var is null	@var is not null	@var
+1	0	NULL
+execute stmt using @var, @var, @var;
+? is null	? is not null	?
+1	0	NULL
 create table t1 (a varchar(20));
 insert into t1 values ('foo');
 prepare stmt FROM 'SELECT char_length (a) FROM t1';