Merge rurik.mysql.com:/home/igor/mysql-5.1

into  rurik.mysql.com:/home/igor/dev/mysql-5.1-0

mysql-test/r/having.result

@@ -128,6 +128,19 @@ id	description	c
 1	test	0
 2	test2	0
 drop table t1,t2,t3;
+CREATE TABLE t1 (a int);
+INSERT INTO t1 VALUES (3), (4), (1), (3), (1);
+SELECT SUM(a) FROM t1 GROUP BY a HAVING SUM(a)>0;
+SUM(a)
+2
+6
+4
+SELECT SUM(a) FROM t1 GROUP BY a HAVING SUM(a);
+SUM(a)
+2
+6
+4
+DROP TABLE t1;
 create table t1 (col1 int, col2 varchar(5), col_t1 int);
 create table t2 (col1 int, col2 varchar(5), col_t2 int);
 create table t3 (col1 int, col2 varchar(5), col_t3 int);

mysql-test/r/view.result

@@ -2475,3 +2475,32 @@ alias1	alias2
 5	5
 drop view v2, v1;
 drop table t1;
+CREATE TABLE t1 (a int PRIMARY KEY, b int);
+INSERT INTO t1 VALUES (2,20), (3,10), (1,10), (0,30), (5,10);
+CREATE VIEW v1 AS SELECT * FROM t1;
+SELECT MAX(a) FROM t1;
+MAX(a)
+5
+SELECT MAX(a) FROM v1;
+MAX(a)
+5
+EXPLAIN SELECT MAX(a) FROM t1;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Select tables optimized away
+EXPLAIN SELECT MAX(a) FROM v1;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Select tables optimized away
+SELECT MIN(a) FROM t1;
+MIN(a)
+0
+SELECT MIN(a) FROM v1;
+MIN(a)
+0
+EXPLAIN SELECT MIN(a) FROM t1;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Select tables optimized away
+EXPLAIN SELECT MIN(a) FROM v1;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Select tables optimized away
+DROP VIEW v1;
+DROP TABLE t1;

mysql-test/t/having.test

@@ -123,6 +123,18 @@ group by a.id, a.description
 having (a.description is not null) and (c=0);
 drop table t1,t2,t3;
 
+#
+# Bug #14274: HAVING clause containing only set function
+#
+
+CREATE TABLE t1 (a int);
+INSERT INTO t1 VALUES (3), (4), (1), (3), (1);
+
+SELECT SUM(a) FROM t1 GROUP BY a HAVING SUM(a)>0;
+SELECT SUM(a) FROM t1 GROUP BY a HAVING SUM(a);
+
+DROP TABLE t1;
+
 # End of 4.1 tests
 
 #

mysql-test/t/view.test

@@ -2343,3 +2343,27 @@ order by v2.receipt_id;
 
 drop view v2, v1;
 drop table t1;
+
+#
+# Bug#16016: MIN/MAX optimization for views
+#
+
+CREATE TABLE t1 (a int PRIMARY KEY, b int);
+INSERT INTO t1 VALUES (2,20), (3,10), (1,10), (0,30), (5,10);
+
+CREATE VIEW v1 AS SELECT * FROM t1;
+
+SELECT MAX(a) FROM t1;
+SELECT MAX(a) FROM v1;
+
+EXPLAIN SELECT MAX(a) FROM t1;
+EXPLAIN SELECT MAX(a) FROM v1;
+
+SELECT MIN(a) FROM t1;
+SELECT MIN(a) FROM v1;
+
+EXPLAIN SELECT MIN(a) FROM t1;
+EXPLAIN SELECT MIN(a) FROM v1;
+
+DROP VIEW v1;
+DROP TABLE t1;

sql/opt_sum.cc

@@ -180,14 +180,14 @@ int opt_sum_query(TABLE_LIST *tables, List<Item> &all_fields,COND *conds)
           indexes to find the key.
         */
         Item *expr=item_sum->args[0];
-        if (expr->type() == Item::FIELD_ITEM)
+        if (expr->real_item()->type() == Item::FIELD_ITEM)
         {
           byte key_buff[MAX_KEY_LENGTH];
           TABLE_REF ref;
           uint range_fl, prefix_len;
 
           ref.key_buff= key_buff;
-          Item_field *item_field= ((Item_field*) expr);
+          Item_field *item_field= (Item_field*) (expr->real_item());
           TABLE *table= item_field->field->table;
 
           /* 
@@ -267,14 +267,14 @@ int opt_sum_query(TABLE_LIST *tables, List<Item> &all_fields,COND *conds)
           indexes to find the key.
         */
         Item *expr=item_sum->args[0];
-        if (expr->type() == Item::FIELD_ITEM)
+        if (expr->real_item()->type() == Item::FIELD_ITEM)
         {
           byte key_buff[MAX_KEY_LENGTH];
           TABLE_REF ref;
           uint range_fl, prefix_len;
 
           ref.key_buff= key_buff;
-	      Item_field *item_field= ((Item_field*) expr);
+          Item_field *item_field= (Item_field*) (expr->real_item());
           TABLE *table= item_field->field->table;
 
           /* 

sql/sql_select.cc

@@ -365,7 +365,8 @@ JOIN::prepare(Item ***rref_pointer_array,
     if (having_fix_rc || thd->net.report_error)
       DBUG_RETURN(-1);				/* purecov: inspected */
     if (having->with_sum_func)
-      having->split_sum_func(thd, ref_pointer_array, all_fields);
+      having->split_sum_func2(thd, ref_pointer_array, all_fields,
+                              &having, TRUE);
     thd->lex->allow_sum_func= save_allow_sum_func;
   }
   if (select_lex->inner_sum_func_list)