Added --skip-safemalloc to mysqltest

Added bug fix from 3.23 for AIX 4.3.3 and gcc 3.x
Small change in EXCHANGE output
Propagate open-files-limit from mysqld_safe -> mysqld
Fixed speed bug in GROUP BY
Added quotes around database name in CREATE DATABASE db_name (for binary log)


BitKeeper/etc/ignore:
  added stamp-h1
Docs/manual.texi:
  Added 4.1 manual section
  Updated changelog
client/mysqltest.c:
  Added --skip-safemalloc
include/my_global.h:
  Added bug fix from 3.23 for AIX 4.3.3 and gcc 3.x
mysql-test/mysql-test-run.sh:
  Start mysqltest with --skip-safemalloc (To get it faster)
mysql-test/r/bdb.result:
  Update for new EXPLAIN output
mysql-test/r/compare.result:
  Update for new EXPLAIN output
mysql-test/r/create.result:
  Update for new EXPLAIN output
mysql-test/r/distinct.result:
  Update for new EXPLAIN output
mysql-test/r/explain.result:
  Update for new EXPLAIN output
mysql-test/r/group_by.result:
  Update for new EXPLAIN output
mysql-test/r/heap.result:
  Update for new EXPLAIN output
mysql-test/r/innodb.result:
  Update for new EXPLAIN output
mysql-test/r/join_outer.result:
  Update for new EXPLAIN output
mysql-test/r/key_diff.result:
  Update for new EXPLAIN output
mysql-test/r/merge.result:
  Update for new EXPLAIN output
mysql-test/r/null_key.result:
  Update for new EXPLAIN output
mysql-test/r/order_by.result:
  Update for new EXPLAIN output
mysql-test/r/select.result:
  Update for new EXPLAIN output
mysql-test/r/temp_table.result:
  Fixed speed bug in GROUP BY
mysql-test/r/type_datetime.result:
  Update for new EXPLAIN output
mysql-test/r/user_var.result:
  Update for new EXPLAIN output
mysql-test/r/variables.result:
  Removed variable safe_show_database
mysql-test/t/temp_table.test:
  Fixed speed bug in GROUP BY
mysql-test/t/variables.test:
  Removed not used variable safe_show_databases
scripts/mysqld_safe.sh:
  Propagate open-files-limit from mysqld_safe -> mysqld
sql/mysqld.cc:
  Removed variable safe_show_database
sql/set_var.cc:
  Removed variable safe_show_database
sql/slave.cc:
  Updated error message
sql/sql_db.cc:
  Added quotes around database name in CREATE DATABASE db_name
sql/sql_select.cc:
  Fixed speed bug in GROUP BY

21 files changed, 140 insertions, 103 deletions

diff --git a/mysql-test/mysql-test-run.sh b/mysql-test/mysql-test-run.sh
index 8b5ec5191b0..09f8051a0f6 100644
--- a/mysql-test/mysql-test-run.sh
+++ b/mysql-test/mysql-test-run.sh
@@ -369,6 +369,7 @@ fi
 [ -d $MYSQL_TEST_DIR/var ] || mkdir $MYSQL_TEST_DIR/var
 [ -d $MYSQL_TEST_DIR/var/tmp ] || mkdir $MYSQL_TEST_DIR/var/tmp
 [ -d $MYSQL_TEST_DIR/var/run ] || mkdir $MYSQL_TEST_DIR/var/run
+[ -d $MYSQL_TEST_DIR/var/log ] || mkdir $MYSQL_TEST_DIR/var/log
 
 if test ${COLUMNS:-0} -lt 80 ; then COLUMNS=80 ; fi
 E=`$EXPR $COLUMNS - 8`
@@ -454,7 +455,7 @@ fi
 
 
 MYSQL_TEST_ARGS="--no-defaults --socket=$MASTER_MYSOCK --database=$DB \
- --user=$DBUSER --password=$DBPASSWD --silent -v \
+ --user=$DBUSER --password=$DBPASSWD --silent -v --skip-safemalloc \
  --tmpdir=$MYSQL_TMP_DIR"
 MYSQL_TEST_BIN=$MYSQL_TEST
 MYSQL_TEST="$MYSQL_TEST $MYSQL_TEST_ARGS"
diff --git a/mysql-test/r/bdb.result b/mysql-test/r/bdb.result
index 7374e936c36..e52878b9759 100644
--- a/mysql-test/r/bdb.result
+++ b/mysql-test/r/bdb.result
@@ -140,13 +140,13 @@ id	parent_id	level
 1010	102	2
 explain select level from t1 where level=1;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	ref	level	level	1	const	1	where used; Using index
+t1	ref	level	level	1	const	1	Using where; Using index
 explain select level,id from t1 where level=1;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	ref	level	level	1	const	1	where used; Using index
+t1	ref	level	level	1	const	1	Using where; Using index
 explain select level,id,parent_id from t1 where level=1;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	ref	level	level	1	const	1	where used
+t1	ref	level	level	1	const	1	Using where
 select level,id from t1 where level=1;
 level	id
 1	1002
@@ -625,7 +625,7 @@ id	parent_id	level
 1016	102	2
 explain select level from t1 where level=1;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	ref	level	level	1	const	1	where used; Using index
+t1	ref	level	level	1	const	1	Using where; Using index
 select level,id from t1 where level=1;
 level	id
 1	1004
diff --git a/mysql-test/r/compare.result b/mysql-test/r/compare.result
index 07f9ce4e81a..afd2a1a086b 100644
--- a/mysql-test/r/compare.result
+++ b/mysql-test/r/compare.result
@@ -3,7 +3,7 @@ CREATE TABLE t1 (id CHAR(12) not null, PRIMARY KEY (id));
 insert into t1 values ('000000000001'),('000000000002');
 explain select * from t1 where id=000000000001;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	index	PRIMARY	PRIMARY	12	NULL	2	where used; Using index
+t1	index	PRIMARY	PRIMARY	12	NULL	2	Using where; Using index
 select * from t1 where id=000000000001;
 id
 000000000001
diff --git a/mysql-test/r/create.result b/mysql-test/r/create.result
index 1e832a128e2..c3083dbfb03 100644
--- a/mysql-test/r/create.result
+++ b/mysql-test/r/create.result
@@ -63,7 +63,7 @@ insert into t1 (b) values ("hello"),("my"),("world");
 create table t2 (key (b)) select * from t1;
 explain select * from t2 where b="world";
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t2	ref	B	B	21	const	1	where used
+t2	ref	B	B	21	const	1	Using where
 select * from t2 where b="world";
 a	B
 3	world
diff --git a/mysql-test/r/distinct.result b/mysql-test/r/distinct.result
index c9b90094f77..10a00995c9e 100644
--- a/mysql-test/r/distinct.result
+++ b/mysql-test/r/distinct.result
@@ -175,7 +175,7 @@ explain SELECT distinct t3.a FROM t3,t2,t1 WHERE t3.a=t1.b AND t1.a=t2.a;
 table	type	possible_keys	key	key_len	ref	rows	Extra
 t3	index	a	a	5	NULL	6	Using index; Using temporary
 t2	index	a	a	4	NULL	5	Using index; Distinct
-t1	eq_ref	PRIMARY	PRIMARY	4	t2.a	1	where used; Distinct
+t1	eq_ref	PRIMARY	PRIMARY	4	t2.a	1	Using where; Distinct
 SELECT distinct t3.a FROM t3,t2,t1 WHERE t3.a=t1.b AND t1.a=t2.a;
 a
 1
@@ -190,7 +190,7 @@ insert into t3 select * from t4;
 explain select distinct t1.a from t1,t3 where t1.a=t3.a;
 table	type	possible_keys	key	key_len	ref	rows	Extra
 t1	index	PRIMARY	PRIMARY	4	NULL	2	Using index; Using temporary
-t3	ref	a	a	5	t1.a	10	where used; Using index; Distinct
+t3	ref	a	a	5	t1.a	10	Using where; Using index; Distinct
 select distinct t1.a from t1,t3 where t1.a=t3.a;
 a
 1
@@ -278,10 +278,10 @@ table	type	possible_keys	key	key_len	ref	rows	Extra
 t1	index	id	id	4	NULL	2	Using index; Using temporary
 t2	index	id	id	8	NULL	1	Using index; Distinct
 t3	index	id	id	8	NULL	1	Using index; Distinct
-j_lj_t2	index	id	id	4	NULL	2	where used; Using index; Distinct
-t2_lj	index	id	id	8	NULL	1	where used; Using index; Distinct
-j_lj_t3	index	id	id	4	NULL	2	where used; Using index; Distinct
-t3_lj	index	id	id	8	NULL	1	where used; Using index; Distinct
+j_lj_t2	index	id	id	4	NULL	2	Using where; Using index; Distinct
+t2_lj	index	id	id	8	NULL	1	Using where; Using index; Distinct
+j_lj_t3	index	id	id	4	NULL	2	Using where; Using index; Distinct
+t3_lj	index	id	id	8	NULL	1	Using where; Using index; Distinct
 SELECT DISTINCT
 t1.id
 from
diff --git a/mysql-test/r/explain.result b/mysql-test/r/explain.result
index 5b4da25d535..876846a5236 100644
--- a/mysql-test/r/explain.result
+++ b/mysql-test/r/explain.result
@@ -10,13 +10,13 @@ id	str
 3	foo
 explain select * from t1 where str is null;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	ref	str	str	11	const	1	where used
+t1	ref	str	str	11	const	1	Using where
 explain select * from t1 where str="foo";
 table	type	possible_keys	key	key_len	ref	rows	Extra
 t1	const	str	str	11	const	1	
 explain select * from t1 ignore key (str) where str="foo";
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	ALL	NULL	NULL	NULL	NULL	4	where used
+t1	ALL	NULL	NULL	NULL	NULL	4	Using where
 explain select * from t1 use key (str,str) where str="foo";
 table	type	possible_keys	key	key_len	ref	rows	Extra
 t1	const	str	str	11	const	1	
diff --git a/mysql-test/r/group_by.result b/mysql-test/r/group_by.result
index fd0248d5ee6..95a272e7b4a 100644
--- a/mysql-test/r/group_by.result
+++ b/mysql-test/r/group_by.result
@@ -234,10 +234,10 @@ userid	count(*)
 1	2
 explain select spid,count(*) from t1 where spid between 1 and 2 group by spid desc;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	range	spID	spID	5	NULL	2	where used; Using index
+t1	range	spID	spID	5	NULL	2	Using where; Using index
 explain select spid,count(*) from t1 where spid between 1 and 2 group by spid;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	range	spID	spID	5	NULL	2	where used; Using index
+t1	range	spID	spID	5	NULL	2	Using where; Using index
 select spid,count(*) from t1 where spid between 1 and 2 group by spid;
 spid	count(*)
 1	1
diff --git a/mysql-test/r/heap.result b/mysql-test/r/heap.result
index 13f452e26d8..73642d7f751 100644
--- a/mysql-test/r/heap.result
+++ b/mysql-test/r/heap.result
@@ -66,7 +66,7 @@ a
 alter table t1 type=myisam;
 explain select * from t1 where a in (869751,736494,226312,802616);
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	range	uniq_id	uniq_id	4	NULL	4	where used; Using index
+t1	range	uniq_id	uniq_id	4	NULL	4	Using where; Using index
 drop table t1;
 create table t1 (x int not null, y int not null, key x(x), unique y(y))
 type=heap;
@@ -159,17 +159,17 @@ create table t1 (btn char(10) not null, key(btn)) type=heap;
 insert into t1 values ("hello"),("hello"),("hello"),("hello"),("hello"),("a"),("b"),("c"),("d"),("e"),("f"),("g"),("h"),("i");
 explain select * from t1 where btn like "q%";
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	ALL	btn	NULL	NULL	NULL	14	where used
+t1	ALL	btn	NULL	NULL	NULL	14	Using where
 select * from t1 where btn like "q%";
 btn
 alter table t1 add column new_col char(1) not null, add key (btn,new_col), drop key btn;
 update t1 set new_col=btn;
 explain select * from t1 where btn="a";
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	ALL	btn	NULL	NULL	NULL	14	where used
+t1	ALL	btn	NULL	NULL	NULL	14	Using where
 explain select * from t1 where btn="a" and new_col="a";
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	ref	btn	btn	11	const,const	10	where used
+t1	ref	btn	btn	11	const,const	10	Using where
 drop table t1;
 CREATE TABLE t1 (
 a int default NULL,
@@ -182,7 +182,7 @@ SELECT * FROM t1 WHERE a=NULL;
 a	b
 explain SELECT * FROM t1 WHERE a IS NULL;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	ref	a	a	5	const	10	where used
+t1	ref	a	a	5	const	10	Using where
 SELECT * FROM t1 WHERE a<=>NULL;
 a	b
 NULL	99
@@ -190,7 +190,7 @@ SELECT * FROM t1 WHERE b=NULL;
 a	b
 explain SELECT * FROM t1 WHERE b IS NULL;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	ref	b	b	5	const	1	where used
+t1	ref	b	b	5	const	1	Using where
 SELECT * FROM t1 WHERE b<=>NULL;
 a	b
 99	NULL
diff --git a/mysql-test/r/innodb.result b/mysql-test/r/innodb.result
index 78b0da2769e..ba2d1c392e3 100644
--- a/mysql-test/r/innodb.result
+++ b/mysql-test/r/innodb.result
@@ -140,13 +140,13 @@ id	parent_id	level
 1015	102	2
 explain select level from t1 where level=1;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	ref	level	level	1	const	12	where used; Using index
+t1	ref	level	level	1	const	12	Using where; Using index
 explain select level,id from t1 where level=1;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	ref	level	level	1	const	12	where used; Using index
+t1	ref	level	level	1	const	12	Using where; Using index
 explain select level,id,parent_id from t1 where level=1;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	ref	level	level	1	const	12	where used
+t1	ref	level	level	1	const	12	Using where
 select level,id from t1 where level=1;
 level	id
 1	1002
@@ -597,7 +597,7 @@ id	parent_id	level
 1016	102	2
 explain select level from t1 where level=1;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	ref	level	level	1	const	6	where used; Using index
+t1	ref	level	level	1	const	6	Using where; Using index
 select level,id from t1 where level=1;
 level	id
 1	1004
@@ -759,7 +759,7 @@ create table t1 (a int  primary key,b int, c int, d int, e int, f int, g int, h
 insert into t1 values (1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1);
 explain select * from t1 where a > 0 and a < 50;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	range	PRIMARY	PRIMARY	4	NULL	1	where used
+t1	range	PRIMARY	PRIMARY	4	NULL	1	Using where
 drop table t1;
 create table t1 (id int NOT NULL,id2 int NOT NULL,id3 int NOT NULL,dummy1 char(30),primary key (id,id2),index index_id3 (id3)) type=innodb;
 insert into t1 values (0,0,0,'ABCDEFGHIJ'),(2,2,2,'BCDEFGHIJK'),(1,1,1,'CDEFGHIJKL');
diff --git a/mysql-test/r/join_outer.result b/mysql-test/r/join_outer.result
index 9d3c152e516..37e18b8b304 100644
--- a/mysql-test/r/join_outer.result
+++ b/mysql-test/r/join_outer.result
@@ -95,7 +95,7 @@ Impossible WHERE noticed after reading const tables
 explain select t1.*,t2.* from t1 left join t2 on t1.a=t2.a where isnull(t2.a)=1;
 table	type	possible_keys	key	key_len	ref	rows	Extra
 t1	ALL	NULL	NULL	NULL	NULL	7	
-t2	eq_ref	PRIMARY	PRIMARY	8	t1.a	1	where used
+t2	eq_ref	PRIMARY	PRIMARY	8	t1.a	1	Using where
 select t1.*,t2.*,t3.a from t1 left join t2 on (t1.a=t2.a) left join t1 as t3 on (t2.a=t3.a);
 grp	a	c	id	a	c	d	a
 1	1	a	1	1	a	1	1
@@ -313,11 +313,11 @@ Lilliana Angelovska	NULL	NULL
 explain select t1.name, t2.name, t2.id from t1 left join t2 on (t1.id = t2.owner) where t2.id is null;
 table	type	possible_keys	key	key_len	ref	rows	Extra
 t1	ALL	NULL	NULL	NULL	NULL	3	
-t2	ALL	NULL	NULL	NULL	NULL	3	where used; Not exists
+t2	ALL	NULL	NULL	NULL	NULL	3	Using where; Not exists
 explain select t1.name, t2.name, t2.id from t1 left join t2 on (t1.id = t2.owner) where t2.name is null;
 table	type	possible_keys	key	key_len	ref	rows	Extra
 t1	ALL	NULL	NULL	NULL	NULL	3	
-t2	ALL	NULL	NULL	NULL	NULL	3	where used
+t2	ALL	NULL	NULL	NULL	NULL	3	Using where
 select count(*) from t1 left join t2 on (t1.id = t2.owner);
 count(*)
 4
@@ -333,11 +333,11 @@ Lilliana Angelovska	NULL	NULL
 explain select t1.name, t2.name, t2.id from t2 right join t1 on (t1.id = t2.owner) where t2.id is null;
 table	type	possible_keys	key	key_len	ref	rows	Extra
 t1	ALL	NULL	NULL	NULL	NULL	3	
-t2	ALL	NULL	NULL	NULL	NULL	3	where used; Not exists
+t2	ALL	NULL	NULL	NULL	NULL	3	Using where; Not exists
 explain select t1.name, t2.name, t2.id from t2 right join t1 on (t1.id = t2.owner) where t2.name is null;
 table	type	possible_keys	key	key_len	ref	rows	Extra
 t1	ALL	NULL	NULL	NULL	NULL	3	
-t2	ALL	NULL	NULL	NULL	NULL	3	where used
+t2	ALL	NULL	NULL	NULL	NULL	3	Using where
 select count(*) from t2 right join t1 on (t1.id = t2.owner);
 count(*)
 4
@@ -620,7 +620,7 @@ INSERT INTO t2 VALUES (1,1);
 explain SELECT * from t1 left join t2 on t1.id=t2.id where t2.id IS NULL;
 table	type	possible_keys	key	key_len	ref	rows	Extra
 t1	ALL	NULL	NULL	NULL	NULL	2	
-t2	index	id	id	8	NULL	1	where used; Using index; Not exists
+t2	index	id	id	8	NULL	1	Using where; Using index; Not exists
 SELECT * from t1 left join t2 on t1.id=t2.id where t2.id IS NULL;
 id	name	id	idx
 2	no	NULL	NULL
@@ -640,7 +640,7 @@ insert into t2 values (10,1),(20,2),(30,3);
 explain select * from t2 left join t1 on t1.fooID = t2.fooID and t1.fooID = 30;
 table	type	possible_keys	key	key_len	ref	rows	Extra
 t2	index	NULL	PRIMARY	4	NULL	3	Using index
-t1	eq_ref	PRIMARY	PRIMARY	2	const	1	where used; Using index
+t1	eq_ref	PRIMARY	PRIMARY	2	const	1	Using where; Using index
 select * from t2 left join t1 on t1.fooID = t2.fooID and t1.fooID = 30;
 fooID	barID	fooID
 10	1	NULL
diff --git a/mysql-test/r/key_diff.result b/mysql-test/r/key_diff.result
index 0886850f38a..4eaccc696f9 100644
--- a/mysql-test/r/key_diff.result
+++ b/mysql-test/r/key_diff.result
@@ -36,7 +36,7 @@ a	a	a	a
 explain select t1.*,t2.* from t1,t1 as t2 where t1.A=t2.B;
 table	type	possible_keys	key	key_len	ref	rows	Extra
 t1	ALL	a	NULL	NULL	NULL	5	
-t2	ALL	b	NULL	NULL	NULL	5	where used
+t2	ALL	b	NULL	NULL	NULL	5	Using where
 select t1.*,t2.* from t1,t1 as t2 where t1.A=t2.B order by binary t1.a,t2.a;
 a	b	a	b
 A	B	a	a
diff --git a/mysql-test/r/merge.result b/mysql-test/r/merge.result
index b95352a9eaa..3c4793a36c5 100644
--- a/mysql-test/r/merge.result
+++ b/mysql-test/r/merge.result
@@ -35,10 +35,10 @@ insert into t1 select NULL,message from t2;
 create table t3 (a int not null, b char(20), key(a)) type=MERGE UNION=(test.t1,test.t2);
 explain select * from t3 where a < 10;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t3	range	a	a	4	NULL	10	where used
+t3	range	a	a	4	NULL	10	Using where
 explain select * from t3 where a > 10 and a < 20;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t3	range	a	a	4	NULL	10	where used
+t3	range	a	a	4	NULL	10	Using where
 select * from t3 where a = 10;
 a	b
 10	Testing
diff --git a/mysql-test/r/null_key.result b/mysql-test/r/null_key.result
index bb8531a9fee..ce397e11c1a 100644
--- a/mysql-test/r/null_key.result
+++ b/mysql-test/r/null_key.result
@@ -3,37 +3,37 @@ create table t1 (a int, b int not null,unique key (a,b),index(b)) type=myisam;
 insert ignore into t1 values (1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(null,7),(9,9),(8,8),(7,7),(null,9),(null,9),(6,6);
 explain select * from t1 where a is null;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	ref	a	a	5	const	3	where used; Using index
+t1	ref	a	a	5	const	3	Using where; Using index
 explain select * from t1 where a is null and b = 2;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	ref	a,b	a	9	const,const	1	where used; Using index
+t1	ref	a,b	a	9	const,const	1	Using where; Using index
 explain select * from t1 where a is null and b = 7;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	ref	a,b	a	9	const,const	1	where used; Using index
+t1	ref	a,b	a	9	const,const	1	Using where; Using index
 explain select * from t1 where a=2 and b = 2;
 table	type	possible_keys	key	key_len	ref	rows	Extra
 t1	const	a,b	a	9	const,const	1	
 explain select * from t1 where a<=>b limit 2;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	index	NULL	a	9	NULL	12	where used; Using index
+t1	index	NULL	a	9	NULL	12	Using where; Using index
 explain select * from t1 where (a is null or a > 0 and a < 3) and b < 5 limit 3;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	range	a,b	a	9	NULL	3	where used; Using index
+t1	range	a,b	a	9	NULL	3	Using where; Using index
 explain select * from t1 where (a is null or a = 7) and b=7;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	ref	a,b	b	4	const	2	where used
+t1	ref	a,b	b	4	const	2	Using where
 explain select * from t1 where (a is null and b>a) or a is null and b=7 limit 2;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	ref	a,b	a	5	const	3	where used; Using index
+t1	ref	a,b	a	5	const	3	Using where; Using index
 explain select * from t1 where a is null and b=9 or a is null and b=7 limit 3;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	range	a,b	a	9	NULL	2	where used; Using index
+t1	range	a,b	a	9	NULL	2	Using where; Using index
 explain select * from t1 where a > 1 and a < 3 limit 1;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	range	a	a	5	NULL	1	where used; Using index
+t1	range	a	a	5	NULL	1	Using where; Using index
 explain select * from t1 where a > 8 and a < 9;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	range	a	a	5	NULL	1	where used; Using index
+t1	range	a	a	5	NULL	1	Using where; Using index
 select * from t1 where a is null;
 a	b
 NULL	7
@@ -66,43 +66,43 @@ NULL	9
 alter table t1 modify b blob not null, add c int not null, drop key a, add unique key (a,b(20),c), drop key b, add key (b(10));
 explain select * from t1 where a is null and b = 2;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	ref	a,b	a	5	const	3	where used
+t1	ref	a,b	a	5	const	3	Using where
 explain select * from t1 where a is null and b = 2 and c=0;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	ref	a,b	a	5	const	3	where used
+t1	ref	a,b	a	5	const	3	Using where
 explain select * from t1 where a is null and b = 7 and c=0;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	ref	a,b	a	5	const	3	where used
+t1	ref	a,b	a	5	const	3	Using where
 explain select * from t1 where a=2 and b = 2;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	ref	a,b	a	5	const	1	where used
+t1	ref	a,b	a	5	const	1	Using where
 explain select * from t1 where a<=>b limit 2;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	ALL	NULL	NULL	NULL	NULL	12	where used
+t1	ALL	NULL	NULL	NULL	NULL	12	Using where
 explain select * from t1 where (a is null or a > 0 and a < 3) and b < 5 and c=0 limit 3;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	range	a,b	a	5	NULL	5	where used
+t1	range	a,b	a	5	NULL	5	Using where
 explain select * from t1 where (a is null or a = 7) and b=7 and c=0;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	range	a,b	a	5	NULL	4	where used
+t1	range	a,b	a	5	NULL	4	Using where
 explain select * from t1 where (a is null and b>a) or a is null and b=7 limit 2;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	ref	a,b	a	5	const	3	where used
+t1	ref	a,b	a	5	const	3	Using where
 explain select * from t1 where a is null and b=9 or a is null and b=7 limit 3;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	ref	a,b	a	5	const	3	where used
+t1	ref	a,b	a	5	const	3	Using where
 explain select * from t1 where a > 1 and a < 3 limit 1;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	range	a	a	5	NULL	1	where used
+t1	range	a	a	5	NULL	1	Using where
 explain select * from t1 where a is null and b=7 or a > 1 and a < 3 limit 1;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	range	a,b	a	5	NULL	4	where used
+t1	range	a,b	a	5	NULL	4	Using where
 explain select * from t1 where a > 8 and a < 9;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	range	a	a	5	NULL	1	where used
+t1	range	a	a	5	NULL	1	Using where
 explain select * from t1 where b like "6%";
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	range	b	b	12	NULL	1	where used
+t1	range	b	b	12	NULL	1	Using where
 select * from t1 where a is null;
 a	b	c
 NULL	7	0
@@ -152,7 +152,7 @@ INSERT INTO t1 VALUES (1,NULL),(2,NULL),(3,1),(4,2),(5,NULL),(6,NULL),(7,3),(8,4
 INSERT INTO t2 VALUES (1,NULL),(2,NULL),(3,1),(4,2),(5,NULL),(6,NULL),(7,3),(8,4),(9,NULL),(10,NULL);
 explain select id from t1 where uniq_id is null;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	ref	idx1	idx1	5	const	1	where used
+t1	ref	idx1	idx1	5	const	1	Using where
 explain select id from t1 where uniq_id =1;
 table	type	possible_keys	key	key_len	ref	rows	Extra
 t1	const	idx1	idx1	5	const	1	
diff --git a/mysql-test/r/order_by.result b/mysql-test/r/order_by.result
index 9ac88b42436..48773bfa916 100644
--- a/mysql-test/r/order_by.result
+++ b/mysql-test/r/order_by.result
@@ -264,13 +264,13 @@ create table t1 (a int not null, b int, c varchar(10), key (a, b, c));
 insert into t1 values (1, NULL, NULL), (1, NULL, 'b'), (1, 1, NULL), (1, 1, 'b'), (1, 1, 'b'), (2, 1, 'a'), (2, 1, 'b'), (2, 2, 'a'), (2, 2, 'b'), (2, 3, 'c'),(1,3,'b');
 explain select * from t1 where (a = 1 and b is null and c = 'b') or (a > 2) order by a desc;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	range	a	a	20	NULL	2	where used; Using index
+t1	range	a	a	20	NULL	2	Using where; Using index
 select * from t1 where (a = 1 and b is null and c = 'b') or (a > 2) order by a desc;
 a	b	c
 1	NULL	b
 explain select * from t1 where a >= 1 and a < 3 order by a desc;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	range	a	a	4	NULL	10	where used; Using index
+t1	range	a	a	4	NULL	10	Using where; Using index
 select * from t1 where a >= 1 and a < 3 order by a desc;
 a	b	c
 2	3	c
@@ -286,7 +286,7 @@ a	b	c
 1	NULL	NULL
 explain select * from t1 where a = 1 order by a desc, b desc;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	ref	a	a	4	const	5	where used; Using index
+t1	ref	a	a	4	const	5	Using where; Using index
 select * from t1 where a = 1 order by a desc, b desc;
 a	b	c
 1	3	b
@@ -297,30 +297,30 @@ a	b	c
 1	NULL	NULL
 explain select * from t1 where a = 1 and b is null order by a desc, b desc;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	ref	a	a	9	const,const	2	where used; Using index; Using filesort
+t1	ref	a	a	9	const,const	2	Using where; Using index; Using filesort
 select * from t1 where a = 1 and b is null order by a desc, b desc;
 a	b	c
 1	NULL	NULL
 1	NULL	b
 explain select * from t1 where a >= 1 and a < 3 and b >0 order by a desc,b desc;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	range	a	a	9	NULL	8	where used; Using index; Using filesort
+t1	range	a	a	9	NULL	8	Using where; Using index; Using filesort
 explain select * from t1 where a = 2 and b >0 order by a desc,b desc;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	range	a	a	9	NULL	5	where used; Using index
+t1	range	a	a	9	NULL	5	Using where; Using index
 explain select * from t1 where a = 2 and b is null order by a desc,b desc;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	ref	a	a	9	const,const	1	where used; Using index; Using filesort
+t1	ref	a	a	9	const,const	1	Using where; Using index; Using filesort
 explain select * from t1 where a = 2 and (b is null or b > 0) order by a
 desc,b desc;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	range	a	a	9	NULL	6	where used; Using index
+t1	range	a	a	9	NULL	6	Using where; Using index
 explain select * from t1 where a = 2 and b > 0 order by a desc,b desc;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	range	a	a	9	NULL	5	where used; Using index
+t1	range	a	a	9	NULL	5	Using where; Using index
 explain select * from t1 where a = 2 and b < 2 order by a desc,b desc;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	range	a	a	9	NULL	2	where used; Using index; Using filesort
+t1	range	a	a	9	NULL	2	Using where; Using index; Using filesort
 alter table t1 modify b int not null, modify c varchar(10) not null;
 explain select * from t1 order by a, b, c;
 table	type	possible_keys	key	key_len	ref	rows	Extra
@@ -356,14 +356,14 @@ a	b	c
 1	0	
 explain select * from t1 where (a = 1 and b = 1 and c = 'b') or (a > 2) order by a desc;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	range	a	a	18	NULL	3	where used; Using index
+t1	range	a	a	18	NULL	3	Using where; Using index
 select * from t1 where (a = 1 and b = 1 and c = 'b') or (a > 2) order by a desc;
 a	b	c
 1	1	b
 1	1	b
 explain select * from t1 where a < 2 and b <= 1 order by a desc, b desc;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	range	a	a	4	NULL	6	where used; Using index
+t1	range	a	a	4	NULL	6	Using where; Using index
 select * from t1 where a < 2 and b <= 1 order by a desc, b desc;
 a	b	c
 1	1	b
@@ -387,7 +387,7 @@ a	b	c
 1	1	
 explain select * from t1 where a between 1 and 3 and b <= 1 order by a desc, b desc;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	range	a	a	8	NULL	10	where used; Using index
+t1	range	a	a	8	NULL	10	Using where; Using index
 select * from t1 where a between 1 and 3 and b <= 1 order by a desc, b desc;
 a	b	c
 2	1	b
@@ -399,7 +399,7 @@ a	b	c
 1	0	
 explain select * from t1 where a between 0 and 1 order by a desc, b desc;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	range	a	a	4	NULL	5	where used; Using index
+t1	range	a	a	4	NULL	5	Using where; Using index
 select * from t1 where a between 0 and 1 order by a desc, b desc;
 a	b	c
 1	3	b
@@ -452,24 +452,24 @@ EXPLAIN select t1.gid, t2.sid, t3.uid from t3, t2, t1 where t2.gid = t1.gid and
 table	type	possible_keys	key	key_len	ref	rows	Extra
 t1	index	PRIMARY	PRIMARY	4	NULL	6	Using index
 t2	eq_ref	PRIMARY,uid	PRIMARY	4	t1.gid	1	
-t3	eq_ref	PRIMARY	PRIMARY	2	t2.uid	1	where used; Using index
+t3	eq_ref	PRIMARY	PRIMARY	2	t2.uid	1	Using where; Using index
 EXPLAIN SELECT t1.gid, t3.uid from t1, t3 where t1.gid = t3.uid order by t1.gid,t3.skr;
 table	type	possible_keys	key	key_len	ref	rows	Extra
 t1	index	PRIMARY	PRIMARY	4	NULL	6	Using index
-t3	eq_ref	PRIMARY	PRIMARY	2	t1.gid	1	where used
+t3	eq_ref	PRIMARY	PRIMARY	2	t1.gid	1	Using where
 EXPLAIN SELECT t1.gid, t2.sid, t3.uid from t2, t1, t3 where t2.gid = t1.gid and t2.uid = t3.uid order by t3.uid, t1.gid;
 table	type	possible_keys	key	key_len	ref	rows	Extra
 t1	index	PRIMARY	PRIMARY	4	NULL	6	Using index; Using temporary; Using filesort
 t2	eq_ref	PRIMARY,uid	PRIMARY	4	t1.gid	1	
-t3	eq_ref	PRIMARY	PRIMARY	2	t2.uid	1	where used; Using index
+t3	eq_ref	PRIMARY	PRIMARY	2	t2.uid	1	Using where; Using index
 EXPLAIN SELECT t1.gid, t3.uid from t1, t3 where t1.gid = t3.uid order by t3.skr,t1.gid;
 table	type	possible_keys	key	key_len	ref	rows	Extra
 t1	index	PRIMARY	PRIMARY	4	NULL	6	Using index; Using temporary; Using filesort
-t3	eq_ref	PRIMARY	PRIMARY	2	t1.gid	1	where used
+t3	eq_ref	PRIMARY	PRIMARY	2	t1.gid	1	Using where
 EXPLAIN SELECT t1.gid, t3.uid from t1, t3 where t1.skr = t3.uid order by t1.gid,t3.skr;
 table	type	possible_keys	key	key_len	ref	rows	Extra
 t1	ALL	NULL	NULL	NULL	NULL	6	Using temporary; Using filesort
-t3	eq_ref	PRIMARY	PRIMARY	2	t1.skr	1	where used
+t3	eq_ref	PRIMARY	PRIMARY	2	t1.skr	1	Using where
 drop table t1,t2,t3;
 CREATE TABLE t1 (
 `titre` char(80) NOT NULL default '',
diff --git a/mysql-test/r/select.result b/mysql-test/r/select.result
index e0697f07cb8..1a40c5b11c3 100644
--- a/mysql-test/r/select.result
+++ b/mysql-test/r/select.result
@@ -1328,19 +1328,19 @@ select t2.fld3 from t2 where fld3 LIKE 'don_t_find_me_please%';
 fld3
 explain select t2.fld3 from t2 where fld3 = 'honeysuckle';
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t2	ref	fld3	fld3	30	const	1	where used; Using index
+t2	ref	fld3	fld3	30	const	1	Using where; Using index
 explain select fld3 from t2 ignore index (fld3) where fld3 = 'honeysuckle';
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t2	index	NULL	fld3	30	NULL	1199	where used; Using index
+t2	index	NULL	fld3	30	NULL	1199	Using where; Using index
 explain select fld3 from t2 use index (fld1) where fld3 = 'honeysuckle';
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t2	index	NULL	fld3	30	NULL	1199	where used; Using index
+t2	index	NULL	fld3	30	NULL	1199	Using where; Using index
 explain select fld3 from t2 use index (fld3) where fld3 = 'honeysuckle';
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t2	ref	fld3	fld3	30	const	1	where used; Using index
+t2	ref	fld3	fld3	30	const	1	Using where; Using index
 explain select fld3 from t2 use index (fld1,fld3) where fld3 = 'honeysuckle';
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t2	ref	fld3	fld3	30	const	1	where used; Using index
+t2	ref	fld3	fld3	30	const	1	Using where; Using index
 explain select fld3 from t2 ignore index (fld3,not_used);
 Key column 'not_used' doesn't exist in table
 explain select fld3 from t2 use index (not_used);
@@ -1351,7 +1351,7 @@ honeysuckle
 honoring
 explain select t2.fld3 from t2 where fld3 >= 'honeysuckle' and fld3 <= 'honoring' order by fld3;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t2	range	fld3	fld3	30	NULL	2	where used; Using index
+t2	range	fld3	fld3	30	NULL	2	Using where; Using index
 select fld1,fld3 from t2 where fld3="Colombo" or fld3 = "nondecreasing" order by fld3;
 fld1	fld3
 148504	Colombo
@@ -1371,7 +1371,7 @@ fld1
 250502
 explain select fld1 from t2 where fld1=250501 or fld1="250502";
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t2	range	fld1	fld1	4	NULL	2	where used; Using index
+t2	range	fld1	fld1	4	NULL	2	Using where; Using index
 select fld1 from t2 where fld1=250501 or fld1=250502 or fld1 >= 250505 and fld1 <= 250601 or fld1 between 250501 and 250502;
 fld1
 250501
@@ -1380,7 +1380,7 @@ fld1
 250601
 explain select fld1 from t2 where fld1=250501 or fld1=250502 or fld1 >= 250505 and fld1 <= 250601 or fld1 between 250501 and 250502;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t2	range	fld1	fld1	4	NULL	4	where used; Using index
+t2	range	fld1	fld1	4	NULL	4	Using where; Using index
 select fld1,fld3 from t2 where companynr = 37 and fld3 like 'f%';
 fld1	fld3
 218401	faithful
@@ -1807,8 +1807,8 @@ select distinct fld3 from t2,t3 where t2.companynr = 34 and t2.fld1=t3.t2nr orde
 fld3
 explain select t3.t2nr,fld3 from t2,t3 where t2.companynr = 34 and t2.fld1=t3.t2nr order by t3.t2nr,fld3;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t2	ALL	fld1	NULL	NULL	NULL	1199	where used; Using temporary; Using filesort
-t3	eq_ref	PRIMARY	PRIMARY	4	t2.fld1	1	where used; Using index
+t2	ALL	fld1	NULL	NULL	NULL	1199	Using where; Using temporary; Using filesort
+t3	eq_ref	PRIMARY	PRIMARY	4	t2.fld1	1	Using where; Using index
 explain select * from t3 as t1,t3 where t1.period=t3.period order by t3.period;
 table	type	possible_keys	key	key_len	ref	rows	Extra
 t1	ALL	period	NULL	NULL	NULL	41810	Using temporary; Using filesort
@@ -2575,11 +2575,11 @@ companynr	companyname
 explain select t2.companynr,companyname from t2 left join t4 using (companynr) where t4.companynr is null;
 table	type	possible_keys	key	key_len	ref	rows	Extra
 t2	ALL	NULL	NULL	NULL	NULL	1199	
-t4	eq_ref	PRIMARY	PRIMARY	1	test.t2.companynr	1	where used; Not exists
+t4	eq_ref	PRIMARY	PRIMARY	1	test.t2.companynr	1	Using where; Not exists
 explain select t2.companynr,companyname from t4 left join t2 using (companynr) where t2.companynr is null;
 table	type	possible_keys	key	key_len	ref	rows	Extra
 t4	ALL	NULL	NULL	NULL	NULL	12	
-t2	ALL	NULL	NULL	NULL	NULL	1199	where used; Not exists
+t2	ALL	NULL	NULL	NULL	NULL	1199	Using where; Not exists
 select distinct t2.companynr,t4.companynr from t2,t4 where t2.companynr=t4.companynr+1;
 companynr	companynr
 37	36
@@ -2587,7 +2587,7 @@ companynr	companynr
 explain select distinct t2.companynr,t4.companynr from t2,t4 where t2.companynr=t4.companynr+1;
 table	type	possible_keys	key	key_len	ref	rows	Extra
 t2	ALL	NULL	NULL	NULL	NULL	1199	Using temporary
-t4	index	NULL	PRIMARY	1	NULL	12	where used; Using index
+t4	index	NULL	PRIMARY	1	NULL	12	Using where; Using index
 select t2.fld1,t2.companynr,fld3,period from t3,t2 where t2.fld1 = 38208 and t2.fld1=t3.t2nr and period = 1008 or t2.fld1 = 38008 and t2.fld1 =t3.t2nr and period = 1008;
 fld1	companynr	fld3	period
 038008	37	reporters	1008
diff --git a/mysql-test/r/temp_table.result b/mysql-test/r/temp_table.result
index 84a00bfea34..45f879e182b 100644
--- a/mysql-test/r/temp_table.result
+++ b/mysql-test/r/temp_table.result
@@ -72,3 +72,25 @@ id	val	elt(two.val,'one','two')
 2	1	one
 4	2	two
 drop table t1,t2;
+drop table if exists t1;
+CREATE TABLE t1 (
+d datetime default NULL
+) TYPE=MyISAM;
+INSERT INTO t1 VALUES ('2002-10-24 14:50:32'),('2002-10-24 14:50:33'),('2002-10-24 14:50:34'),('2002-10-24 14:50:34'),('2002-10-24 14:50:34'),('2002-10-24 14:50:35'),('2002-10-24 14:50:35'),('2002-10-24 14:50:35'),('2002-10-24 14:50:35'),('2002-10-24 14:50:36'),('2002-10-24 14:50:36'),('2002-10-24 14:50:36'),('2002-10-24 14:50:36'),('2002-10-24 14:50:37'),('2002-10-24 14:50:37'),('2002-10-24 14:50:37'),('2002-10-24 14:50:37'),('2002-10-24 14:50:38'),('2002-10-24 14:50:38'),('2002-10-24 14:50:38'),('2002-10-24 14:50:39'),('2002-10-24 14:50:39'),('2002-10-24 14:50:39'),('2002-10-24 14:50:39'),('2002-10-24 14:50:40'),('2002-10-24 14:50:40'),('2002-10-24 14:50:40');
+flush status;
+select * from t1 group by d;
+d
+2002-10-24 14:50:32
+2002-10-24 14:50:33
+2002-10-24 14:50:34
+2002-10-24 14:50:35
+2002-10-24 14:50:36
+2002-10-24 14:50:37
+2002-10-24 14:50:38
+2002-10-24 14:50:39
+2002-10-24 14:50:40
+show status like "created_tmp%tables";
+Variable_name	Value
+Created_tmp_disk_tables	0
+Created_tmp_tables	1
+drop table t1;
diff --git a/mysql-test/r/type_datetime.result b/mysql-test/r/type_datetime.result
index cae15d4f665..38b264b96b9 100644
--- a/mysql-test/r/type_datetime.result
+++ b/mysql-test/r/type_datetime.result
@@ -76,5 +76,5 @@ date	numfacture	expedition
 0000-00-00 00:00:00	1212	0001-00-00 00:00:00
 EXPLAIN SELECT * FROM t1 WHERE expedition='0001-00-00 00:00:00';
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	ref	expedition	expedition	8	const	1	where used
+t1	ref	expedition	expedition	8	const	1	Using where
 drop table t1;
diff --git a/mysql-test/r/user_var.result b/mysql-test/r/user_var.result
index 5643900182e..5e9f3a720c2 100644
--- a/mysql-test/r/user_var.result
+++ b/mysql-test/r/user_var.result
@@ -19,14 +19,14 @@ i	@vv1:=if(sv1.i,1,0)	@vv2:=if(sv2.i,1,0)	@vv3:=if(sv3.i,1,0)	@vv1+@vv2+@vv3
 2	1	0	0	1
 explain select * from t1 where i=@vv1;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	ref	i	i	4	const	1	where used
+t1	ref	i	i	4	const	1	Using where
 explain select * from t1 where @vv1:=@vv1+1 and i=@vv1;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	ALL	NULL	NULL	NULL	NULL	3	where used
+t1	ALL	NULL	NULL	NULL	NULL	3	Using where
 explain select @vv1:=i from t1 where i=@vv1;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	index	NULL	i	4	NULL	3	where used; Using index
+t1	index	NULL	i	4	NULL	3	Using where; Using index
 explain select * from t1 where i=@vv1;
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	ref	i	i	4	const	1	where used
+t1	ref	i	i	4	const	1	Using where
 drop table t1,t2;
diff --git a/mysql-test/r/variables.result b/mysql-test/r/variables.result
index f708ddd2ee7..ff0f94ab4a6 100644
--- a/mysql-test/r/variables.result
+++ b/mysql-test/r/variables.result
@@ -108,7 +108,6 @@ show global variables like 'table_type';
 Variable_name	Value
 table_type	INNODB
 set GLOBAL query_cache_size=100000;
-set GLOBAL safe_show_database=0;
 set myisam_max_sort_file_size=10000, GLOBAL myisam_max_sort_file_size=20000;
 show variables like 'myisam_max_sort_file_size';
 Variable_name	Value
@@ -276,7 +275,6 @@ set global query_cache_type=demand;
 set read_buffer_size=100;
 set read_rnd_buffer_size=100;
 set global rpl_recovery_rank=100;
-set global safe_show_database=1;
 set global server_id=100;
 set global slave_net_timeout=100;
 set global slow_launch_time=100;
diff --git a/mysql-test/t/temp_table.test b/mysql-test/t/temp_table.test
index 3cf18bae9fe..10168cf13c7 100644
--- a/mysql-test/t/temp_table.test
+++ b/mysql-test/t/temp_table.test
@@ -60,3 +60,21 @@ insert into t2 values (1,1),(2,1),(3,1),(4,2);
 # do a query using ELT, a join and an ORDER BY.
 select one.id, two.val, elt(two.val,'one','two') from t1 one, t2 two where two.id=one.id order by one.id;
 drop table t1,t2;
+
+#
+# In MySQL 4.0.4 doing a GROUP BY on a NULL column created a disk based
+# temporary table when a memory based one would be good enough.
+
+drop table if exists t1;
+
+CREATE TABLE t1 (
+  d datetime default NULL
+) TYPE=MyISAM;
+
+
+INSERT INTO t1 VALUES ('2002-10-24 14:50:32'),('2002-10-24 14:50:33'),('2002-10-24 14:50:34'),('2002-10-24 14:50:34'),('2002-10-24 14:50:34'),('2002-10-24 14:50:35'),('2002-10-24 14:50:35'),('2002-10-24 14:50:35'),('2002-10-24 14:50:35'),('2002-10-24 14:50:36'),('2002-10-24 14:50:36'),('2002-10-24 14:50:36'),('2002-10-24 14:50:36'),('2002-10-24 14:50:37'),('2002-10-24 14:50:37'),('2002-10-24 14:50:37'),('2002-10-24 14:50:37'),('2002-10-24 14:50:38'),('2002-10-24 14:50:38'),('2002-10-24 14:50:38'),('2002-10-24 14:50:39'),('2002-10-24 14:50:39'),('2002-10-24 14:50:39'),('2002-10-24 14:50:39'),('2002-10-24 14:50:40'),('2002-10-24 14:50:40'),('2002-10-24 14:50:40');
+
+flush status;
+select * from t1 group by d;
+show status like "created_tmp%tables";
+drop table t1;
diff --git a/mysql-test/t/variables.test b/mysql-test/t/variables.test
index 7a1d01c2cb5..e84a7fe404d 100644
--- a/mysql-test/t/variables.test
+++ b/mysql-test/t/variables.test
@@ -65,7 +65,6 @@ set table_type=MYISAM, table_type="HEAP", global table_type="INNODB";
 show local variables like 'table_type';
 show global variables like 'table_type';
 set GLOBAL query_cache_size=100000;
-set GLOBAL safe_show_database=0;
 
 set myisam_max_sort_file_size=10000, GLOBAL myisam_max_sort_file_size=20000;
 show variables like 'myisam_max_sort_file_size';
@@ -188,7 +187,6 @@ set global query_cache_type=demand;
 set read_buffer_size=100;
 set read_rnd_buffer_size=100;
 set global rpl_recovery_rank=100;
-set global safe_show_database=1;
 set global server_id=100;
 set global slave_net_timeout=100;
 set global slow_launch_time=100;