after review changes in IN/ALL/ANY/SOME (SCRUM)

sql/item.cc

@@ -457,30 +457,52 @@ bool Item_asterisk_remover::fix_fields(THD *thd,
 {
   DBUG_ENTER("Item_asterisk_remover::fix_fields");
   
-  bool res;
+  bool res= 1;
   if (item)
     if (item->type() == Item::FIELD_ITEM &&
 	((Item_field*) item)->field_name[0] == '*')
     {
-      List<Item> fields;
-      fields.push_back(item);
-      List_iterator<Item> it(fields);
-      it++;
-      uint elem=fields.elements;
-      if (insert_fields(thd, list, ((Item_field*) item)->db_name,
-			((Item_field*) item)->table_name, &it))
-	res= -1;
-      else
-	if (fields.elements > 1)
+      Item_field *fitem=  (Item_field*) item;
+      if (!list->next || fitem->db_name || fitem->table_name)
+      {
+	TABLE_LIST *table= find_table_in_list(thd, list,
+					      fitem->db_name,
+					      fitem->table_name);
+	if (table)
+	{
+	  TABLE * tb= table->table;
+	  if (find_table_in_list(thd, table->next, fitem->db_name,
+				 fitem->table_name) != 0 ||
+	      tb->fields == 1)
 	  {
-	  my_message(ER_SUBSELECT_NO_1_COL, ER(ER_SUBSELECT_NO_1_COL), MYF(0));
-	  res= -1;
+	    if ((item= new Item_field(tb->field[0])))
+	    {
+	      res= 0;
+	      tb->field[0]->query_id= thd->query_id;
+	      tb->used_keys&= tb->field[0]->part_of_key;
+	      tb->used_fields= tb->fields;
+	    }
+	    else
+	      thd->fatal_error= 1; // can't create Item => out of memory
 	  }
+	  else
+	    my_message(ER_SUBSELECT_NO_1_COL, ER(ER_SUBSELECT_NO_1_COL),
+		       MYF(0));
+	}
+	else
+	  if (!fitem->table_name)
+	    my_error(ER_NO_TABLES_USED, MYF(0));
+	  else
+	    my_error(ER_BAD_TABLE_ERROR, MYF(0), fitem->table_name);
+      }
+      else
+	my_message(ER_SUBSELECT_NO_1_COL, ER(ER_SUBSELECT_NO_1_COL),
+		   MYF(0));
     }   
     else
       res= item->fix_fields(thd, list, &item);
   else
-    res= -1;
+    thd->fatal_error= 1; // no item given => out of memory
   *ref= item;
   DBUG_RETURN(res);
 }

sql/item.h

@@ -124,9 +124,9 @@ class Item_wrapper :public Item
 class Item_outer_select_context_saver :public Item_wrapper
 {
 public:
-  Item_outer_select_context_saver(Item *i)
+  Item_outer_select_context_saver(Item *it)
   {
-    item= i;
+    item= it;
   }
   bool fix_fields(THD *, struct st_table_list *, Item ** ref);
 };
@@ -137,9 +137,9 @@ class Item_outer_select_context_saver :public Item_wrapper
 class Item_asterisk_remover :public Item_wrapper
 {
 public:
-  Item_asterisk_remover(Item *i)
+  Item_asterisk_remover(Item *it)
   {
-    item= i;
+    item= it;
   }
   bool fix_fields(THD *, struct st_table_list *, Item ** ref);
 };

sql/item_subselect.cc

@@ -280,13 +280,13 @@ void Item_in_subselect::single_value_transformer(st_select_lex *select_lex,
 						 compare_func_creator func)
 {
   DBUG_ENTER("Item_in_subselect::single_value_transformer");
-  for(SELECT_LEX * sl= select_lex; sl; sl= sl->next_select())
+  for (SELECT_LEX * sl= select_lex; sl; sl= sl->next_select())
   {
     Item *item;
     if (sl->item_list.elements > 1)
     {
       my_message(ER_SUBSELECT_NO_1_COL, ER(ER_SUBSELECT_NO_1_COL), MYF(0));
-      item= 0; // Item_asterisk_remover mast fail
+      item= 0; // Item_asterisk_remover must fail
     }
     else
       item= (Item*) sl->item_list.pop();
@@ -408,7 +408,7 @@ void subselect_union_engine::fix_length_and_dec()
 {
   uint32 mlen= 0, len;
   Item *sel_item= 0;
-  for(SELECT_LEX *sl= unit->first_select(); sl; sl= sl->next_select())
+  for (SELECT_LEX *sl= unit->first_select(); sl; sl= sl->next_select())
   {
     List_iterator_fast<Item> li(sl->item_list);
     Item *s_item= li++;

sql/mysql_priv.h

@@ -578,6 +578,8 @@ bool close_thread_table(THD *thd, TABLE **table_ptr);
 void close_thread_tables(THD *thd,bool locked=0);
 bool close_thread_table(THD *thd, TABLE **table_ptr);
 void close_temporary_tables(THD *thd);
+TABLE_LIST * find_table_in_list(TABLE_LIST *table,
+				const char *db_name, const char *table_name);
 TABLE **find_temporary_table(THD *thd, const char *db, const char *table_name);
 bool close_temporary_table(THD *thd, const char *db, const char *table_name);
 void close_temporary(TABLE *table, bool delete_table=1);

sql/sql_base.cc

@@ -743,6 +743,29 @@ void close_temporary_tables(THD *thd)
   thd->temporary_tables=0;
 }
 
+/*
+  Find first suitable table in given list.
+
+  SYNOPSIS
+    find_table_in_list()
+    table - pointer to table list
+    db_name - data base name or 0 for any
+    table_name - table name or 0 for any
+
+  RETURN VALUES
+    NULL	Table not found
+    #		Pointer to found table.
+*/
+
+TABLE_LIST * find_table_in_list(TABLE_LIST *table,
+				const char *db_name, const char *table_name)
+{
+  for (; table; table= table->next)
+    if ((!db_name || !strcmp(table->db, db_name)) &&
+	(!table_name || !strcmp(table->alias, table_name)))
+      break;
+  return table;
+}
 
 TABLE **find_temporary_table(THD *thd, const char *db, const char *table_name)
 {