After merge fix

sql/table.h

@@ -26,6 +26,7 @@ class st_select_lex_unit;
 typedef struct st_order {
   struct st_order *next;
   Item	 **item;			/* Point at item in select fields */
+  Item	 *item_ptr;			/* Storage for initial item */
   Item   **item_copy;			/* For SPs; the original item ptr */
   bool	 asc;				/* true if ascending */
   bool	 free_me;			/* true if item isn't shared  */
@@ -66,7 +67,8 @@ struct st_table {
   handler *file;
   Field **field;			/* Pointer to fields */
   Field_blob **blob_field;		/* Pointer to blob fields */
-  HASH	name_hash;			/* hash of field names */
+  /* hash of field names (contains pointers to elements of field array) */
+  HASH	name_hash;
   byte *record[2];			/* Pointer to records */
   byte *default_values;          	/* Default values for INSERT */
   byte *insert_values;                  /* used by INSERT ... UPDATE */
@@ -97,8 +99,20 @@ struct st_table {
   uint raid_type,raid_chunks;
   uint status;				/* Used by postfix.. */
   uint system;				/* Set if system record */
-  ulong time_stamp;			/* Set to offset+1 of record */
+
+  /* 
+    These two members hold offset in record + 1 for TIMESTAMP field
+    with NOW() as default value or/and with ON UPDATE NOW() option. 
+    If 0 then such field is absent in this table or auto-set for default
+    or/and on update should be temporaly disabled for some reason.
+    These values is setup to offset value for each statement in open_table()
+    and turned off in statement processing code (see mysql_update as example).
+  */
+  ulong timestamp_default_now;
+  ulong timestamp_on_update_now;
+  /* Index of auto-updated TIMESTAMP field in field array */
   uint timestamp_field_offset;
+  
   uint next_number_index;
   uint blob_ptr_size;			/* 4 or 8 */
   uint next_number_key_offset;
@@ -109,7 +123,7 @@ struct st_table {
   my_bool maybe_null,outer_join;	/* Used with OUTER JOIN */
   my_bool force_index;
   my_bool distinct,const_table,no_rows;
-  my_bool key_read, bulk_insert;
+  my_bool key_read;
   my_bool crypted;
   my_bool db_low_byte_first;		/* Portable row format */
   my_bool locked_by_flush;
@@ -119,7 +133,7 @@ struct st_table {
   my_bool is_view;
   my_bool no_keyread, no_cache;
   my_bool clear_query_id;               /* To reset query_id for tables and cols */
-  my_bool auto_increment_field_not_null;     
+  my_bool auto_increment_field_not_null;
   Field *next_number_field,		/* Set if next_number is activated */
 	*found_next_number_field,	/* Set on open */
         *rowid_field;
@@ -170,7 +184,7 @@ typedef struct st_table_list
  GRANT_INFO	grant;
   thr_lock_type lock_type;
   uint		outer_join;		/* Which join type */
-  uint		shared;			/* Used in union or in multi-upd */
+  uint		shared;			/* Used in multi-upd */
   uint32        db_length, real_name_length;
   bool		straight;		/* optimize with prev table */
   bool          updating;               /* for replicate-do/ignore table */
@@ -181,6 +195,9 @@ typedef struct st_table_list
   struct st_nested_join *nested_join;   /* if the element is a nested join  */
   st_table_list *embedding;             /* nested join containing the table */
   List<struct st_table_list> *join_list;/* join list the table belongs to   */ 
+  bool		cacheable_table;	/* stop PS caching */
+  /* used in multi-upd privelege check */
+  bool		table_in_update_from_clause;
 } TABLE_LIST;
 
 typedef struct st_nested_join