Item tree iterator

fixed dependence of items from reduced subquery
(SCRUM)


sql/item.cc:
  fixed dependence of items from reduced subquery
sql/item.h:
  fixed dependence of items from reduced subquery
  Item tree iterator
sql/item_cmpfunc.cc:
  Item tree iterator
sql/item_cmpfunc.h:
  Item tree iterator
sql/item_func.cc:
  Item tree iterator
sql/item_func.h:
  Item tree iterator
sql/item_row.cc:
  Item tree iterator
sql/item_row.h:
  Item tree iterator
sql/item_strfunc.h:
  Item tree iterator
sql/item_subselect.cc:
  Item tree iterator

1 files changed, 10 insertions, 0 deletions

diff --git a/sql/item_row.cc b/sql/item_row.cc
index 0eaad42873e..43e38763aa6 100644
--- a/sql/item_row.cc
+++ b/sql/item_row.cc
@@ -118,6 +118,16 @@ bool Item_row::check_cols(uint c)
   return 0;
 }
 
+bool Item_row::walk(Item_processor processor, byte *arg)
+{
+  for (uint i= 0; i < arg_count; i++)
+  {
+    if (items[i]->walk(processor, arg))
+      return 1;
+  }
+  return (this->*processor)(arg);
+}
+
 void Item_row::bring_value()
 {
   for (uint i= 0; i < arg_count; i++)