Merge sanja.is.com.ua:/home/bell/mysql/mysql-4.1

into sanja.is.com.ua:/home/bell/mysql/work-in-4.1

mysql-test/r/derived.result

@@ -146,3 +146,5 @@ SELECT 1 as a FROM (SELECT a UNION SELECT 1) b;
 Unknown column 'a' in 'field list'
 SELECT 1 as a FROM (SELECT 1 UNION SELECT a) b;
 Unknown column 'a' in 'field list'
+select 1 from  (select 2) a order by 0;
+Unknown column '0' in 'order clause'

mysql-test/r/row.result

@@ -159,3 +159,9 @@ a	MAX(b)	(1, MAX(b)) = (1, 4)
 1	4	1
 10	43	0
 drop table t1;
+SELECT ROW(2,10) <=> ROW(3,4);
+ROW(2,10) <=> ROW(3,4)
+0
+SELECT ROW(NULL,10) <=> ROW(3,NULL);
+ROW(NULL,10) <=> ROW(3,NULL)
+0

mysql-test/r/union.result

@@ -267,3 +267,5 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	PRIMARY	t1	const	PRIMARY	PRIMARY	4	const	1	
 2	UNION	t1	ref	b	b	5	const	1	Using where
 drop table t1,t2;
+(select 1) union (select 2) order by 0;
+Unknown column '0' in 'order clause'

mysql-test/t/derived.test

@@ -62,3 +62,5 @@ SELECT * FROM (SELECT 1 UNION SELECT a) b;
 SELECT 1 as a FROM (SELECT a UNION SELECT 1) b;
 --error 1054
 SELECT 1 as a FROM (SELECT 1 UNION SELECT a) b;
+--error 1054
+select 1 from  (select 2) a order by 0;

mysql-test/t/row.test

@@ -79,3 +79,5 @@ insert into t1 values (10, 43);
 insert into t1 values (1, 4);
 select a, MAX(b), (1, MAX(b)) = (1, 4) from t1 group by a;
 drop table t1;
+SELECT ROW(2,10) <=> ROW(3,4);
+SELECT ROW(NULL,10) <=> ROW(3,NULL);

mysql-test/t/union.test

@@ -142,3 +142,5 @@ explain (select * from t1 where a=1) union (select * from t2 where a=1);
 explain (select * from t1 where a=1 and b=10) union (select t1.a,t2.a from t1,t2 where t1.a=t2.a);
 explain (select * from t1 where a=1) union (select * from t1 where b=1);
 drop table t1,t2;
+--error 1054
+(select 1) union (select 2) order by 0;

sql/item_cmpfunc.cc

@@ -266,8 +266,8 @@ int Arg_comparator::compare_e_row()
   uint n= (*a)->cols();
   for (uint i= 0; i<n; i++)
   {
-    if ((res= comparators[i].compare()))
-      return 1;
+    if ((res= !comparators[i].compare()))
+      return 0;
   }
   return 1;
 }
@@ -362,7 +362,6 @@ void Item_func_equal::fix_length_and_dec()
 {
   Item_bool_func2::fix_length_and_dec();
   maybe_null=null_value=0;
-  set_cmp_func();
 }
 
 longlong Item_func_equal::val_int()