merge with 4.1

BitKeeper/etc/ignore:
  auto-union
BitKeeper/etc/logging_ok:
  auto-union
BitKeeper/triggers/post-commit:
  Auto merged
Docs/Support/texi2html:
  Auto merged
Makefile.am:
  Auto merged
client/Makefile.am:
  Auto merged
client/mysql.cc:
  Auto merged
client/mysqldump.c:
  Auto merged
include/my_base.h:
  Auto merged
include/my_global.h:
  Auto merged
include/my_pthread.h:
  Auto merged
include/my_sys.h:
  Auto merged
include/my_time.h:
  Auto merged
include/mysql.h:
  Auto merged
include/mysql_com.h:
  Auto merged
innobase/buf/buf0buf.c:
  Auto merged
innobase/include/row0mysql.h:
  Auto merged
innobase/row/row0sel.c:
  Auto merged
libmysql/libmysql.c:
  Auto merged
libmysqld/examples/Makefile.am:
  Auto merged
myisam/mi_check.c:
  Auto merged
mysql-test/include/ps_modify.inc:
  Auto merged
mysql-test/install_test_db.sh:
  Auto merged
mysql-test/r/alter_table.result:
  Auto merged
mysql-test/r/auto_increment.result:
  Auto merged
mysql-test/r/bdb.result:
  Auto merged
mysql-test/r/ctype_latin1_de.result:
  Auto merged
mysql-test/r/ctype_recoding.result:
  Auto merged
mysql-test/r/fulltext.result:
  Auto merged
mysql-test/r/func_gconcat.result:
  Auto merged
mysql-test/r/func_group.result:
  Auto merged
mysql-test/r/func_if.result:
  Auto merged
mysql-test/t/derived.test:
  Auto merged
mysql-test/t/insert.test:
  merge with 4.1
  Fixed test case to not use 'if exists' when it shouldn't
mysql-test/t/range.test:
  merge with 4.1
  Added missing drop table
sql/ha_ndbcluster.cc:
  merge with 4.1
  Simple optimization: use max() instead of ? :
sql/item_func.cc:
  merge with 4.1
  (Added back old variable names for easier merges)
sql/opt_range.cc:
  merge with 4.1
  Removed argument 'parent_alloc' from QUICK_RANGE_SELECT as this was not used
  Added assert if using QUICK_GROUP_MIN_MAX_SELECT with parent_alloc as the init() function can't handle this
  Changed back get_quick_select_for_ref() to use it's own alloc root becasue this function may be called several times for one query
sql/sql_handler.cc:
  merge with 4.1
  change variable 'err' to 'error' as same function had a label named 'err'
sql/sql_update.cc:
  Use multi-update code from 5.0 instead of 4.1
  We will fix the locking code shortly in 5.0 to be faster than in 4.1

1 files changed, 4 insertions, 13 deletions

diff --git a/sql/item_cmpfunc.h b/sql/item_cmpfunc.h
index 8d52459c0e5..754ebe08b77 100644
--- a/sql/item_cmpfunc.h
+++ b/sql/item_cmpfunc.h
@@ -215,21 +215,11 @@ public:
 
 class Item_bool_rowready_func2 :public Item_bool_func2
 {
-  Item *orig_a, *orig_b; /* propagate_const can change parameters */
 public:
-  Item_bool_rowready_func2(Item *a,Item *b) :Item_bool_func2(a,b),
-    orig_a(a), orig_b(b)
+  Item_bool_rowready_func2(Item *a, Item *b) :Item_bool_func2(a, b)
   {
     allowed_arg_cols= a->cols();
   }
-  void cleanup()
-  {
-    DBUG_ENTER("Item_bool_rowready_func2::cleanup");
-    Item_bool_func2::cleanup();
-    tmp_arg[0]= orig_a;
-    tmp_arg[1]= orig_b;
-    DBUG_VOID_RETURN;
-  }
   Item *neg_transformer(THD *thd);
   virtual Item *negated_item();
 };
@@ -483,6 +473,7 @@ public:
   const char *func_name() const { return "nullif"; }
   void print(String *str) { Item_func::print(str); }
   table_map not_null_tables() const { return 0; }
+  bool is_null();
 };
 
 
@@ -893,7 +884,7 @@ public:
   char escape;
 
   Item_func_like(Item *a,Item *b, Item *escape_arg)
-    :Item_bool_func2(a,b), canDoTurboBM(false), pattern(0), pattern_len(0), 
+    :Item_bool_func2(a,b), canDoTurboBM(FALSE), pattern(0), pattern_len(0), 
      bmGs(0), bmBc(0), escape_item(escape_arg) {}
   longlong val_int();
   enum Functype functype() const { return LIKE_FUNC; }
@@ -970,7 +961,7 @@ public:
   table_map used_tables() const;
   void update_used_tables();
   void print(String *str);
-  void split_sum_func(Item **ref_pointer_array, List<Item> &fields);
+  void split_sum_func(THD *thd, Item **ref_pointer_array, List<Item> &fields);
   friend int setup_conds(THD *thd,TABLE_LIST *tables,COND **conds);
   void top_level_item() { abort_on_null=1; }
   void copy_andor_arguments(THD *thd, Item_cond *item);