more resonable errors about name resolving in subqueries (BUG#1483)

mysql-test/r/subselect.result:
  more resonable errors about name resolving in subqueries
mysql-test/t/subselect.test:
  more resonable errors about name resolving in subqueries
sql/item.cc:
  more resonable errors about name resolving in subqueries

mysql-test/r/subselect.result

@@ -1349,7 +1349,7 @@ create table t2 (s1 int);
 insert into t1 values (1);
 insert into t2 values (1);
 update t1 set  s1 = s1 + 1 where 1 = (select x.s1 as A from t2 WHERE t2.s1 > t1.s1 order by A);
-ERROR 42S02: Unknown table 'x' in field list
+ERROR 42S22: Unknown column 'x.s1' in 'field list'
 DROP TABLE t1, t2;
 create table t1 (a int) type=innodb;
 create table t2 (a int) type=innodb;
@@ -1439,3 +1439,12 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	PRIMARY	t3	ALL	NULL	NULL	NULL	NULL	3	Using where
 2	SUBQUERY	t2	ALL	NULL	NULL	NULL	NULL	4	Using temporary; Using filesort
 drop table if exists t2, t3;
+create table t1 (s1 int);
+create table t2 (s1 int);
+select * from t1 where (select count(*) from t2 where t1.s2) = 1;
+ERROR 42S22: Unknown column 't1.s2' in 'where clause'
+select * from t1 where (select count(*) from t2 group by t1.s2) = 1;
+ERROR 42S22: Unknown column 't1.s2' in 'group statement'
+select count(*) from t2 group by t1.s2;
+ERROR 42S02: Unknown table 't1' in group statement
+drop table t1, t2;

mysql-test/t/subselect.test

@@ -693,7 +693,7 @@ INSERT INTO t1 VALUES (1);
 UPDATE t1 SET i=i+(SELECT MAX(i) FROM (SELECT 1) t) WHERE i=(SELECT MAX(i));
 -- error 1111
 UPDATE t1 SET i=i+1 WHERE i=(SELECT MAX(i));
--- error 1109
+-- error 1054
 UPDATE t1 SET t.i=i+(SELECT MAX(i) FROM (SELECT 1) t);
 drop table t1;
 
@@ -887,7 +887,7 @@ create table t1 (s1 int);
 create table t2 (s1 int);
 insert into t1 values (1);
 insert into t2 values (1);
--- error 1109
+-- error 1054
 update t1 set  s1 = s1 + 1 where 1 = (select x.s1 as A from t2 WHERE t2.s1 > t1.s1 order by A);
 DROP TABLE t1, t2;
 
@@ -965,3 +965,16 @@ insert into t2 values (2,2), (2,1), (3,3), (3,1);
 select * from t3 where a > all (select max(b) from t2 group by a);
 explain select * from t3 where a > all (select max(b) from t2 group by a);
 drop table if exists t2, t3;
+
+#
+# unresolved field error
+#
+create table t1 (s1 int); 
+create table t2 (s1 int);
+-- error 1054
+select * from t1 where (select count(*) from t2 where t1.s2) = 1;
+-- error 1054
+select * from t1 where (select count(*) from t2 group by t1.s2) = 1;
+-- error 1109
+select count(*) from t2 group by t1.s2;
+drop table t1, t2;
\ No newline at end of file

sql/item.cc

@@ -794,6 +794,7 @@ bool Item_field::fix_fields(THD *thd, TABLE_LIST *tables, Item **ref)
   if (!field)					// If field is not checked
   {
     TABLE_LIST *where= 0;
+    bool upward_lookup= 0;
     Field *tmp= (Field *)not_found_field;
     if ((tmp= find_field_in_tables(thd, this, tables, &where, 0)) ==
 	not_found_field)
@@ -821,6 +822,7 @@ bool Item_field::fix_fields(THD *thd, TABLE_LIST *tables, Item **ref)
 	     sl;
 	     sl= sl->outer_select())
 	{
+	  upward_lookup= 1;
 	  table_list= (last= sl)->get_table_list();
 	  if (sl->resolve_mode == SELECT_LEX::INSERT_MODE && table_list)
 	  {
@@ -846,8 +848,14 @@ bool Item_field::fix_fields(THD *thd, TABLE_LIST *tables, Item **ref)
 	return 1;
       else if (tmp == not_found_field && refer == (Item **)not_found_item)
       {
-	// call to return error code
-	find_field_in_tables(thd, this, tables, &where, 1);
+	if (upward_lookup)
+	  // We can't say exactly what absend table or field
+	  my_printf_error(ER_BAD_FIELD_ERROR, ER(ER_BAD_FIELD_ERROR), MYF(0),
+			  full_name(), thd->where);
+	else
+	  // Call to report error
+	  find_field_in_tables(thd, this, tables, &where, 1);
+
 	return -1;
       }
       else if (refer != (Item **)not_found_item)
@@ -1350,6 +1358,7 @@ bool Item_ref::fix_fields(THD *thd,TABLE_LIST *tables, Item **reference)
   if (!ref)
   {
     TABLE_LIST *where= 0, *table_list;
+    bool upward_lookup= 0;
     SELECT_LEX *sl= thd->lex.current_select->outer_select();
     /*
       Finding only in current select will be performed for selects that have 
@@ -1367,6 +1376,7 @@ bool Item_ref::fix_fields(THD *thd,TABLE_LIST *tables, Item **reference)
 				  REPORT_ALL_ERRORS))) ==
 	(Item **)not_found_item)
     {
+      upward_lookup= 1;
       Field *tmp= (Field*) not_found_field;
       /*
 	We can't find table field in table list of current select,
@@ -1408,11 +1418,16 @@ bool Item_ref::fix_fields(THD *thd,TABLE_LIST *tables, Item **reference)
 	return -1;
       else if (ref == (Item **)not_found_item && tmp == not_found_field)
       {
-	// Call to report error
-	find_item_in_list(this,
-			  *(thd->lex.current_select->get_item_list()),
-			  &counter,
-			  REPORT_ALL_ERRORS);
+	if (upward_lookup)
+	  // We can't say exactly what absend (table or field)
+	  my_printf_error(ER_BAD_FIELD_ERROR, ER(ER_BAD_FIELD_ERROR), MYF(0),
+			  full_name(), thd->where);
+	else
+	  // Call to report error
+	  find_item_in_list(this,
+			    *(thd->lex.current_select->get_item_list()),
+			    &counter,
+			    REPORT_ALL_ERRORS);
         ref= 0;
 	return 1;
       }