Merge tulin@bk-internal.mysql.com:/home/bk/mysql-5.0

into dl145b.mysql.com:/home/ndbdev/tomas/mysql-5.1

mysql-test/r/group_by.result

@@ -723,27 +723,6 @@ WHERE hostname LIKE '%aol%'
 hostname	no
 cache-dtc-af05.proxy.aol.com	1
 DROP TABLE t1;
-create table t1 (c1 char(3), c2 char(3));
-create table t2 (c3 char(3), c4 char(3));
-insert into t1 values ('aaa', 'bb1'), ('aaa', 'bb2');
-insert into t2 values ('aaa', 'bb1'), ('aaa', 'bb2');
-select t1.c1 as c2 from t1, t2 where t1.c2 = t2.c4
-group by c2;
-c2
-aaa
-aaa
-Warnings:
-Warning	1052	Column 'c2' in group statement is ambiguous
-show warnings;
-Level	Code	Message
-Warning	1052	Column 'c2' in group statement is ambiguous
-select t1.c1 as c2 from t1, t2 where t1.c2 = t2.c4
-group by t1.c1;
-c2
-aaa
-show warnings;
-Level	Code	Message
-drop table t1, t2;
 CREATE TABLE t1 (a  int, b int);
 INSERT INTO t1 VALUES (1,2), (1,3);
 SELECT a, b FROM t1 GROUP BY 'const';
@@ -762,3 +741,13 @@ SELECT dt DIV 1 AS f, id FROM t1 GROUP BY f;
 f	id
 20050501123000	1
 DROP TABLE t1;
+CREATE TABLE t1 (id varchar(20) NOT NULL);
+INSERT INTO t1 VALUES ('trans1'), ('trans2');
+CREATE TABLE t2 (id varchar(20) NOT NULL, err_comment blob NOT NULL);
+INSERT INTO t2 VALUES ('trans1', 'a problem');
+SELECT COUNT(DISTINCT(t1.id)), LEFT(err_comment, 256) AS comment
+FROM t1 LEFT JOIN t2 ON t1.id=t2.id GROUP BY comment;
+COUNT(DISTINCT(t1.id))	comment
+1	NULL
+1	a problem
+DROP TABLE t1, t2;

mysql-test/r/view.result

@@ -1726,6 +1726,20 @@ sum(a)
 drop procedure p1;
 drop view v1;
 drop table t1;
+CREATE TABLE t1(a char(2) primary key, b char(2));
+CREATE TABLE t2(a char(2), b char(2), index i(a));
+INSERT INTO t1 VALUES ('a','1'), ('b','2');
+INSERT INTO t2 VALUES ('a','5'), ('a','6'), ('b','5'), ('b','6');
+CREATE VIEW v1 AS
+SELECT t1.b as c, t2.b as d FROM t1,t2 WHERE t1.a=t2.a;
+SELECT d, c FROM v1 ORDER BY d;
+d	c
+5	1
+5	2
+6	1
+6	2
+DROP VIEW v1;
+DROP TABLE t1, t2;
 create table t1 (s1 int);
 create view  v1 as select sum(distinct s1) from t1;
 select * from v1;

mysql-test/t/group_by.test

@@ -542,30 +542,6 @@ SELECT hostname, COUNT(DISTINCT user_id) as no FROM t1
 
 DROP TABLE t1;
 
-#
-# Bug#11211: Ambiguous column reference in GROUP BY.
-#
-
-create table t1 (c1 char(3), c2 char(3));
-create table t2 (c3 char(3), c4 char(3));
-insert into t1 values ('aaa', 'bb1'), ('aaa', 'bb2');
-insert into t2 values ('aaa', 'bb1'), ('aaa', 'bb2');
-
-# query with ambiguous column reference 'c2'
---disable_ps_protocol
-select t1.c1 as c2 from t1, t2 where t1.c2 = t2.c4
-group by c2;
-show warnings;
---enable_ps_protocol
-
-# this query has no ambiguity
-select t1.c1 as c2 from t1, t2 where t1.c2 = t2.c4
-group by t1.c1;
-
-show warnings;
-
-drop table t1, t2;
-
 #
 # Test for bug #8614: GROUP BY 'const' with DISTINCT  
 #
@@ -589,3 +565,18 @@ INSERT INTO t1 VALUES ( 1, '2005-05-01 12:30:00' );
 SELECT dt DIV 1 AS f, id FROM t1 GROUP BY f;
 
 DROP TABLE t1;
+
+#
+# Test for bug #11295: GROUP BY a BLOB column with COUNT(DISTINCT column1) 
+#                      when the BLOB column takes NULL values
+# 
+
+CREATE TABLE t1 (id varchar(20) NOT NULL);
+INSERT INTO t1 VALUES ('trans1'), ('trans2');
+CREATE TABLE t2 (id varchar(20) NOT NULL, err_comment blob NOT NULL);
+INSERT INTO t2 VALUES ('trans1', 'a problem');
+
+SELECT COUNT(DISTINCT(t1.id)), LEFT(err_comment, 256) AS comment
+  FROM t1 LEFT JOIN t2 ON t1.id=t2.id GROUP BY comment;
+
+DROP TABLE t1, t2;

mysql-test/t/view.test

@@ -1569,6 +1569,18 @@ drop procedure p1;
 drop view v1;
 drop table t1;
 
+#
+# Bug#7422 "order by" doesn't work
+#
+CREATE TABLE t1(a char(2) primary key, b char(2));
+CREATE TABLE t2(a char(2), b char(2), index i(a));
+INSERT INTO t1 VALUES ('a','1'), ('b','2');
+INSERT INTO t2 VALUES ('a','5'), ('a','6'), ('b','5'), ('b','6');
+CREATE VIEW v1 AS
+  SELECT t1.b as c, t2.b as d FROM t1,t2 WHERE t1.a=t2.a;
+SELECT d, c FROM v1 ORDER BY d;
+DROP VIEW v1;
+DROP TABLE t1, t2;
 #
 # using sum(distinct ) & avg(distinct ) in views (BUG#7015)
 #

sql/filesort.cc

@@ -631,7 +631,7 @@ static void make_sortkey(register SORTPARAM *param,
 	    *to++=1;
 	  /* All item->str() to use some extra byte for end null.. */
 	  String tmp((char*) to,sort_field->length+4,cs);
-	  String *res=item->val_str(&tmp);
+          String *res= item->str_result(&tmp);
 	  if (!res)
 	  {
 	    if (maybe_null)
@@ -673,8 +673,8 @@ static void make_sortkey(register SORTPARAM *param,
 	}
       case INT_RESULT:
 	{
-	  longlong value=item->val_int();
-	  if (maybe_null)
+          longlong value= item->val_int_result();
+          if (maybe_null)
           {
 	    *to++=1;				/* purecov: inspected */
             if (item->null_value)
@@ -715,7 +715,7 @@ static void make_sortkey(register SORTPARAM *param,
 	}
       case DECIMAL_RESULT:
         {
-          my_decimal dec_buf, *dec_val= item->val_decimal(&dec_buf);
+          my_decimal dec_buf, *dec_val= item->val_decimal_result(&dec_buf);
           if (maybe_null)
           {
             if (item->null_value)
@@ -733,7 +733,7 @@ static void make_sortkey(register SORTPARAM *param,
         }
       case REAL_RESULT:
 	{
-	  double value= item->val_real();
+          double value= item->val_result();
 	  if (maybe_null)
           {
             if (item->null_value)

sql/item.h

@@ -716,10 +716,6 @@ public:
   void cleanup();
   bool remove_dependence_processor(byte * arg);
   void print(String *str);
-
-  friend bool insert_fields(THD *thd,TABLE_LIST *tables, const char *db_name,
-                            const char *table_name, List_iterator<Item> *it,
-                            bool any_privileges, bool allocate_view_names);
 };
 
 class Item_equal;

sql/item_buff.cc

@@ -60,8 +60,8 @@ bool Cached_item_str::cmp(void)
   String *res;
   bool tmp;
 
-  res=item->val_str(&tmp_value);
-  res->length(min(res->length(), value.alloced_length()));
+  if ((res=item->val_str(&tmp_value)))
+    res->length(min(res->length(), value.alloced_length()));
   if (null_value != item->null_value)
   {
     if ((null_value= item->null_value))

sql/mysql_priv.h

@@ -894,8 +894,7 @@ bool get_key_map_from_key_list(key_map *map, TABLE *table,
                                List<String> *index_list);
 bool insert_fields(THD *thd,TABLE_LIST *tables,
 		   const char *db_name, const char *table_name,
-		   List_iterator<Item> *it, bool any_privileges,
-                   bool allocate_view_names);
+		   List_iterator<Item> *it, bool any_privileges);
 bool setup_tables(THD *thd, TABLE_LIST *tables, Item **conds,
 		  TABLE_LIST **leaves, bool select_insert);
 int setup_wild(THD *thd, TABLE_LIST *tables, List<Item> &fields,

sql/sp_head.cc

@@ -682,6 +682,7 @@ sp_head::execute(THD *thd)
 
   cleanup_items(thd->current_arena->free_list);
   thd->current_arena= old_arena;
+  state= EXECUTED;
 
  done:
   DBUG_PRINT("info", ("ret=%d killed=%d query_error=%d",

sql/sql_base.cc

@@ -3053,7 +3053,7 @@ int setup_wild(THD *thd, TABLE_LIST *tables, List<Item> &fields,
       }
       else if (insert_fields(thd,tables,((Item_field*) item)->db_name,
                              ((Item_field*) item)->table_name, &it,
-                             any_privileges, arena != 0))
+                             any_privileges))
       {
 	if (arena)
 	  thd->restore_backup_item_arena(arena, &backup);
@@ -3306,8 +3306,6 @@ bool get_key_map_from_key_list(key_map *map, TABLE *table,
     any_privileges	0 If we should ensure that we have SELECT privileges
 		          for all columns
                         1 If any privilege is ok
-    allocate_view_names if true view names will be copied to current Query_arena
-                        memory (made for SP/PS)
   RETURN
     0	ok
         'it' is updated to point at last inserted
@@ -3317,7 +3315,7 @@ bool get_key_map_from_key_list(key_map *map, TABLE *table,
 bool
 insert_fields(THD *thd, TABLE_LIST *tables, const char *db_name,
 	      const char *table_name, List_iterator<Item> *it,
-              bool any_privileges, bool allocate_view_names)
+              bool any_privileges)
 {
   /* allocate variables on stack to avoid pool alloaction */
   Field_iterator_table table_iter;
@@ -3508,25 +3506,6 @@ insert_fields(THD *thd, TABLE_LIST *tables, const char *db_name,
           field->query_id=thd->query_id;
           table->used_keys.intersect(field->part_of_key);
         }
-        else if (allocate_view_names &&
-                 thd->lex->current_select->first_execution)
-        {
-	  Item_field *item;
-	  if (alias_used)
-	    item= new Item_field(0,
-				 thd->strdup(tables->alias),
-				 thd->strdup(field_name));
-	  else
-	    item= new Item_field(thd->strdup(tables->view_db.str),
-				 thd->strdup(tables->view_name.str),
-				 thd->strdup(field_name));
-          /*
-            during cleunup() this item will be put in list to replace
-            expression from VIEW
-          */
-          thd->nocheck_register_item_tree_change(it->ref(), item,
-                                                 thd->mem_root);
-        }
       }
       /*
 	All fields are used in case if usual tables (in case of view used

sql/sql_class.h

@@ -700,6 +700,8 @@ public:
   virtual ~Query_arena() {};
 
   inline bool is_stmt_prepare() const { return state == INITIALIZED; }
+  inline bool is_first_sp_execute() const
+  { return state == INITIALIZED_FOR_SP; }
   inline bool is_stmt_prepare_or_first_sp_execute() const
   { return (int)state < (int)PREPARED; }
   inline bool is_first_stmt_execute() const { return state == PREPARED; }

sql/sql_handler.cc

@@ -422,7 +422,7 @@ bool mysql_ha_read(THD *thd, TABLE_LIST *tables,
     }
   }
 
-  if (insert_fields(thd, tables, tables->db, tables->alias, &it, 0, 0))
+  if (insert_fields(thd, tables, tables->db, tables->alias, &it, 0))
     goto err0;
 
   protocol->send_fields(&list, Protocol::SEND_NUM_ROWS | Protocol::SEND_EOF);

sql/sql_lex.h

@@ -530,7 +530,19 @@ public:
     query processing end even if we use temporary table
   */
   bool subquery_in_having;
-  bool first_execution; /* first execution in SP or PS */
+  /*
+    This variable is required to ensure proper work of subqueries and
+    stored procedures. Generally, one should use the states of
+    Query_arena to determine if it's a statement prepare or first
+    execution of a stored procedure. However, in case when there was an
+    error during the first execution of a stored procedure, the SP body
+    is not expelled from the SP cache. Therefore, a deeply nested
+    subquery might be left unoptimized. So we need this per-subquery
+    variable to inidicate the optimization/execution state of every
+    subquery. Prepared statements work OK in that regard, as in
+    case of an error during prepare the PS is not created.
+  */
+  bool first_execution;
   bool first_cond_optimization;
   /* do not wrap view fields with Item_ref */
   bool no_wrap_view_item;