A cleanup in derived table handling: removing duplicate code from st_select_lex::handle_derived()

st_select_lex::handle_derived() and mysql_handle_list_of_derived() had
exactly the same implementations.

- Adding a new method LEX::handle_list_of_derived() instead
- Removing public function mysql_handle_list_of_derived()
- Reusing LEX::handle_list_of_derived() in st_select_lex::handle_derived()

1 files changed, 1 insertions, 8 deletions

diff --git a/sql/sql_lex.cc b/sql/sql_lex.cc
index cfbde25314b..3c0d3049ae4 100644
--- a/sql/sql_lex.cc
+++ b/sql/sql_lex.cc
@@ -3593,14 +3593,7 @@ bool st_select_lex::optimize_unflattened_subqueries(bool const_only)
 
 bool st_select_lex::handle_derived(LEX *lex, uint phases)
 {
-  for (TABLE_LIST *cursor= (TABLE_LIST*) table_list.first;
-       cursor;
-       cursor= cursor->next_local)
-  {
-    if (cursor->is_view_or_derived() && cursor->handle_derived(lex, phases))
-      return TRUE;
-  }
-  return FALSE;
+  return lex->handle_list_of_derived(table_list.first, phases);
 }