Don't use ranges on HEAP tables with LIKE

Don't reconnect client on close


libmysql/libmysql.c:
  Don't reconnect on close
mysql-test/r/heap.result:
  Fixed heap table test
sql/field.cc:
  Backed out wrong HEAP table bug fix
sql/ha_heap.h:
  cleanup
sql/mini_client.cc:
  Don't reconnect on close
sql/opt_range.cc:
  Don't use ranges on HEAP tables with LIKE

libmysql/libmysql.c

@@ -1657,6 +1657,7 @@ mysql_close(MYSQL *mysql)
     {
       free_old_query(mysql);
       mysql->status=MYSQL_STATUS_READY; /* Force command */
+      mysql->reconnect=0;
       simple_command(mysql,COM_QUIT,NullS,0,1);
       end_server(mysql);
     }

mysql-test/r/heap.result

@@ -79,7 +79,7 @@ f1	f2
 12	ted
 12	ted
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t1	range	btn	btn	10	NULL	10	where used
+t1	ALL	btn	NULL	NULL	NULL	14	where used
 btn
 table	type	possible_keys	key	key_len	ref	rows	Extra
 t1	ALL	btn	NULL	NULL	NULL	14	where used

sql/field.cc

@@ -363,7 +363,7 @@ void Field::store_time(TIME *ltime,timestamp_type type)
 
 bool Field::optimize_range()
 {
-  return test(table->file->option_flag() & HA_ONLY_WHOLE_INDEX);
+  return test(table->file->option_flag() & HA_READ_NEXT);
 }
 
 /****************************************************************************

sql/ha_heap.h

@@ -78,10 +78,3 @@ class ha_heap: public handler
 			     enum thr_lock_type lock_type);
 
 };
-
-
-
-
-
-
-

sql/mini_client.cc

@@ -384,12 +384,16 @@ my_bool STDCALL mc_mysql_reconnect(MYSQL *mysql)
   MYSQL tmp_mysql;
   DBUG_ENTER("mc_mysql_reconnect");
 
+  if (!mysql->reconnect)
+    DBUG_RETURN(1);
+
   mc_mysql_init(&tmp_mysql);
   tmp_mysql.options=mysql->options;
   if (!mc_mysql_connect(&tmp_mysql,mysql->host,mysql->user,mysql->passwd,
 			  mysql->db, mysql->port, mysql->unix_socket,
 			  mysql->client_flag))
     {
+      tmp_mysql.reconnect=0;
       mc_mysql_close(&tmp_mysql); 
       DBUG_RETURN(1);
     }
@@ -793,6 +797,7 @@ mc_mysql_close(MYSQL *mysql)
     {
       mc_free_old_query(mysql);
       mysql->status=MYSQL_STATUS_READY; /* Force command */
+      mysql->reconnect=0;
       mc_simple_command(mysql,COM_QUIT,NullS,0,1);
       mc_end_server(mysql);
     }

sql/opt_range.cc

@@ -919,6 +919,9 @@ get_mm_leaf(Field *field,KEY_PART *key_part,
 
   if (type == Item_func::LIKE_FUNC)
   {
+    if (!field->optimize_range())
+      DBUG_RETURN(0);				// Can't optimize this
+
     bool like_error;
     char buff1[MAX_FIELD_WIDTH],*min_str,*max_str;
     String tmp(buff1,sizeof(buff1)),*res;
@@ -971,7 +974,8 @@ get_mm_leaf(Field *field,KEY_PART *key_part,
                                   max_str+maybe_null,&min_length,&max_length);
       else
 #endif
-        like_error=like_range(res->ptr(),res->length(),wild_prefix,field_length,
+        like_error=like_range(res->ptr(),res->length(),wild_prefix,
+			      field_length,
                               min_str+offset,max_str+offset,
                               max_sort_char,&min_length,&max_length);
     }