fixed parsing mode for derived tables (BUG#2421)

mysql-test/r/derived.result:
  test of BUG#2421
mysql-test/t/derived.test:
  test of BUG#2421
sql/sql_yacc.yy:
  fixed parsing mode for derived tables

mysql-test/r/derived.result

@@ -298,3 +298,9 @@ INSERT INTO t3 VALUES (1000,0.00),(1001,0.25),(1002,0.50),(1003,0.75),(1008,1.00
 select 497, TMP.ID, NULL from (select 497 as ID, MAX(t3.DATA) as DATA      from t1 join t2 on (t1.ObjectID = t2.ID) join t3 on (t1.ObjectID = t3.ID) group by t2.ParID order by DATA DESC) as TMP;
 497	ID	NULL
 drop table t1, t2, t3;
+CREATE TABLE `t1` ( `itemid` int(11) NOT NULL default '0', `grpid` varchar(15) NOT NULL default '', `vendor` int(11) NOT NULL default '0', `date_` date NOT NULL default '0000-00-00', `price` decimal(12,2) NOT NULL default '0.00', PRIMARY KEY  (`itemid`,`grpid`,`vendor`,`date_`), KEY `itemid` (`itemid`,`vendor`), KEY `itemid_2` (`itemid`,`date_`));
+insert into t1 values (128, 'rozn', 2, now(), 10),(128, 'rozn', 1, now(), 10);
+SELECT MIN(price) min, MAX(price) max, AVG(price) avg FROM (SELECT SUBSTRING( MAX(concat(date_,";",price)), 12) price FROM t1 WHERE itemid=128 AND  grpid='rozn' GROUP BY itemid, grpid, vendor) lastprices;
+min	max	avg
+10.00	10.00	10
+DROP TABLE t1;

mysql-test/t/derived.test

@@ -183,3 +183,11 @@ CREATE TABLE t3 (
 INSERT INTO t3 VALUES (1000,0.00),(1001,0.25),(1002,0.50),(1003,0.75),(1008,1.00),(1009,1.25),(1010,1.50),(1011,1.75);
 select 497, TMP.ID, NULL from (select 497 as ID, MAX(t3.DATA) as DATA      from t1 join t2 on (t1.ObjectID = t2.ID) join t3 on (t1.ObjectID = t3.ID) group by t2.ParID order by DATA DESC) as TMP;
 drop table t1, t2, t3;
+
+#
+# select list counter
+#
+CREATE TABLE `t1` ( `itemid` int(11) NOT NULL default '0', `grpid` varchar(15) NOT NULL default '', `vendor` int(11) NOT NULL default '0', `date_` date NOT NULL default '0000-00-00', `price` decimal(12,2) NOT NULL default '0.00', PRIMARY KEY  (`itemid`,`grpid`,`vendor`,`date_`), KEY `itemid` (`itemid`,`vendor`), KEY `itemid_2` (`itemid`,`date_`));
+insert into t1 values (128, 'rozn', 2, now(), 10),(128, 'rozn', 1, now(), 10);
+SELECT MIN(price) min, MAX(price) max, AVG(price) avg FROM (SELECT SUBSTRING( MAX(concat(date_,";",price)), 12) price FROM t1 WHERE itemid=128 AND  grpid='rozn' GROUP BY itemid, grpid, vendor) lastprices;
+DROP TABLE t1;

sql/sql_yacc.yy

@@ -3253,8 +3253,13 @@ select_derived:
 	    YYABORT;
 	  mysql_init_select(lex);
 	  lex->current_select->linkage= DERIVED_TABLE_TYPE;
+	  lex->current_select->parsing_place= SELECT_LEX_NODE::SELECT_LIST;
+	}
+        select_options select_item_list
+	{
+	  Select->parsing_place= SELECT_LEX_NODE::NO_MATTER;
 	}
-        select_options select_item_list opt_select_from union_opt
+	opt_select_from union_opt
         ;
 
 opt_outer: