1 files changed, 64 insertions, 1 deletions
diff --git a/sql/item.cc b/sql/item.cc
index 5e74820a3f8..6eb2adb9392 100644
--- a/sql/item.cc
+++ b/sql/item.cc
@@ -533,7 +533,9 @@ bool Item_field::fix_fields(THD *thd, TABLE_LIST *tables, Item **ref)
 	cause error ER_NON_UNIQ_ERROR in find_field_in_tables.
       */
       SELECT_LEX *last= 0;
-      
+#ifdef EMBEDDED_LIBRARY
+      thd->net.last_errno= 0;
+#endif
       Item **refer= (Item **)not_found_item;
       // Prevent using outer fields in subselects, that is not supported now
       SELECT_LEX *cursel=(SELECT_LEX *) thd->lex.current_select;
@@ -918,11 +920,72 @@ bool Item::send(THD *thd, String *packet)
   return net_store_data(packet,res->ptr(),res->length());
 }
 
+
 bool Item_null::send(THD *thd, String *packet)
 {
   return net_store_null(packet);
 }
 
+#ifdef EMBEDDED_LIBRARY
+bool Item::embedded_send(const CONVERT *convert, CHARSET_INFO *charset, MEM_ROOT *alloc, 
+			 char **result, ulong *length)
+{
+  char buff[MAX_FIELD_WIDTH];
+  String s(buff, sizeof(buff), charset), *value;
+  if (!(value=val_str(&s)) ||
+      !(*result=alloc_root(alloc, value->length() + 1)))
+  {
+    *result= NULL;
+    *length= 0;
+    return false;
+  }
+  if (!(*result=alloc_root(alloc, value->length() + 1)))
+    return true;
+  *length= value->length();
+  if (convert)
+    convert->convert_back(*result, value->ptr(), *length);
+  else
+    memcpy(*result, value->ptr(), *length);
+  (*result)[*length]= 0;
+  return false;
+}
+
+bool Item_null::embedded_send(const CONVERT *convert, CHARSET_INFO *charset, MEM_ROOT *alloc, 
+			     char **result, ulong *length)
+{
+  *result= NULL;
+  *length= 0;
+  return false;
+}
+
+bool Item_field::embedded_send(const CONVERT *convert, CHARSET_INFO *charset, MEM_ROOT *alloc, 
+			       char **result, ulong *length)
+{
+  if (result_field->is_null())
+  {
+    *result= NULL;
+    *length= 0;
+    return false;
+  }
+
+  char buff[MAX_FIELD_WIDTH];
+  String tmp(buff,sizeof(buff),default_charset_info);
+  result_field->val_str(&tmp,&tmp);
+
+  if (!(*result=alloc_root(alloc, tmp.length() + 1)))
+    return true;
+  *length= tmp.length();
+  if (convert)
+    convert->convert_back(*result, tmp.ptr(), *length);
+  else
+    memcpy(*result, tmp.ptr(), *length);
+  (*result)[*length]= 0;
+  return false;
+}
+
+#endif
+
+
 /*
   This is used for HAVING clause
   Find field in select list having the same name