Merge serg@work:/home/bk/mysql

into serg.mysql.com:/usr/home/serg/Abk/mysql

include/ft_global.h

@@ -49,6 +49,7 @@ FT_DOCLIST * ft_init_search(void *, uint, byte *, uint, my_bool);
 int          ft_read_next(FT_DOCLIST *, char *);
 #define      ft_close_search(handler)   my_free(((gptr)(handler)),MYF(0))
 #define      ft_get_relevance(handler)  ((handler)->doc[(handler)->curdoc].weight)
+#define      ft_reinit_search(handler)  (((FT_DOCLIST *)(handler))->curdoc=-1)
 
 #ifdef  __cplusplus
 }

sql/ha_myisam.cc

@@ -1088,7 +1088,8 @@ int ha_myisam::ft_read(byte * buf)
 
   thread_safe_increment(ha_read_next_count,&LOCK_status); // why ?
 
-  error=ft_read_next((FT_DOCLIST *) ft_handler,(char*) buf);
+  if (error=ft_read_next((FT_DOCLIST *) ft_handler,(char*) buf))
+    ft_handler=NULL; // Magic here ! See Item_func_match::val()
 
   table->status=error ? STATUS_NOT_FOUND: 0;
   return error;

sql/item_func.cc

@@ -1846,10 +1846,12 @@ double Item_func_match::val()
 
   if (join_key)
   {
+    if (table->file->ft_handler)
       return ft_get_relevance(ft_handler);
+
+    join_key=0; // Magic here ! See ha_myisam::ft_read()
   }
-  else
-  {
+
   /* we'll have to find ft_relevance manually in ft_handler array */
 
   int a,b,c;
@@ -1872,17 +1874,18 @@ double Item_func_match::val()
     return docs[a].weight;
   else
     return 0.0;
-  }
+
 }
 
-void Item_func_match::init_search()
+void Item_func_match::init_search(bool no_order)
 {
   if (ft_handler)
     return;
 
   if (master)
   {
-    master->init_search();
+    join_key=master->join_key=join_key|master->join_key;
+    master->init_search(no_order);
     ft_handler=master->ft_handler;
     join_key=master->join_key;
     return;
@@ -1894,7 +1897,8 @@ void Item_func_match::init_search()
 
   ft_tmp=key_item()->val_str(&tmp2);
   ft_handler=(FT_DOCLIST *)
-     table->file->ft_init_ext(key, (byte*) ft_tmp->ptr(), ft_tmp->length(), join_key);
+     table->file->ft_init_ext(key, (byte*) ft_tmp->ptr(), ft_tmp->length(),
+                              join_key && !no_order);
 
   if (join_key)
   {

sql/item_func.h

@@ -863,5 +863,5 @@ public:
   longlong val_int() { return val()!=0.0; }
 
   bool fix_index();
-  void init_search();
+  void init_search(bool no_order);
 };

sql/sql_select.cc

@@ -532,7 +532,7 @@ mysql_select(THD *thd,TABLE_LIST *tables,List<Item> &fields,COND *conds,
 
     while ((ifm=li++))
     {
-      ifm->init_search();
+      ifm->init_search(test(order));
     }
   }
   /* Create a tmp table if distinct or if the sort is too complicated */