fixed printing of sum(distinct ) & avg(distinct ) & cast(... as decimal) (BUG#7015, BUG#11387)

mysql-test/r/view.result:
  using sum(distinct ), cast(... as decimal) & avg(distinct ) in views
mysql-test/t/view.test:
  using sum(distinct ), cast(... as decimal) & avg(distinct ) in views
sql/item.h:
  Add a comment for Item::print
sql/item_func.cc:
  Use functype(), not func_name() for item equvalence detection
sql/item_func.h:
  Missed function typoes added
  Add a comment for Item_func::func_name()
  style fix
sql/item_strfunc.cc:
  Use functype(), not func_name() for item equvalence detection
sql/item_strfunc.h:
  Add missing func_name and func_type
sql/item_sum.cc:
  Item_sum func_name report beggining of function till first argument
sql/item_sum.h:
  Item_sum func_name report beggining of function till first argument
sql/item_timefunc.cc:
  Use functype(), not func_name() for item equvalence detection
sql/item_timefunc.h:
  Add missing func_name and func_type
sql/item_uniq.h:
  Add missing func_name

1 files changed, 2 insertions, 2 deletions

diff --git a/sql/item_timefunc.cc b/sql/item_timefunc.cc
index 564c5e4b9cc..19386c15835 100644
--- a/sql/item_timefunc.cc
+++ b/sql/item_timefunc.cc
@@ -2158,7 +2158,7 @@ bool Item_extract::eq(const Item *item, bool binary_cmp) const
   if (this == item)
     return 1;
   if (item->type() != FUNC_ITEM ||
-      func_name() != ((Item_func*)item)->func_name())
+      functype() != ((Item_func*)item)->functype())
     return 0;
 
   Item_extract* ie= (Item_extract*)item;
@@ -2176,7 +2176,7 @@ bool Item_char_typecast::eq(const Item *item, bool binary_cmp) const
   if (this == item)
     return 1;
   if (item->type() != FUNC_ITEM ||
-      func_name() != ((Item_func*)item)->func_name())
+      functype() != ((Item_func*)item)->functype())
     return 0;
 
   Item_char_typecast *cast= (Item_char_typecast*)item;