removed droping field->query_id for reinitialization tables for subquery.

(BUG#2089)

mysql-test/r/subselect_innodb.result

@@ -60,6 +60,19 @@ INSERT INTO t2 VALUES (1,1),(2,2),(3,3);
 SELECT distinct p1.processor_id, (SELECT y.yod_id FROM t1 p2, t2 y WHERE p2.processor_id = p1.processor_id and p2.processor_id = y.processor_id) FROM t1 p1;
 processor_id	(SELECT y.yod_id FROM t1 p2, t2 y WHERE p2.processor_id = p1.processor_id and p2.processor_id = y.processor_id)
 1	1
-2	1
-3	1
+2	2
+3	3
 drop table t1,t2,t3;
+create table t1 (id int not null, value char(255), primary key(id)) engine=innodb;
+create table t2 (id int not null, value char(255)) engine=innodb;
+insert into t1 values (1,'a'),(2,'b');
+insert into t2 values (1,'z'),(2,'x');
+select t2.id,t2.value,(select t1.value from t1 where t1.id=t2.id) from t2;
+id	value	(select t1.value from t1 where t1.id=t2.id)
+1	z	a
+2	x	b
+select t2.id,t2.value,(select t1.value from t1 where t1.id=t2.id) from t2;
+id	value	(select t1.value from t1 where t1.id=t2.id)
+1	z	a
+2	x	b
+drop table t1,t2;

sql/mysql_priv.h

@@ -664,7 +664,7 @@ 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 setup_tables(TABLE_LIST *tables);
+bool setup_tables(TABLE_LIST *tables, my_bool reinit);
 int setup_wild(THD *thd, TABLE_LIST *tables, List<Item> &fields,
 	       List<Item> *sum_func_list, uint wild_num);
 int setup_fields(THD *thd, Item** ref_pointer_array, TABLE_LIST *tables,

sql/sql_base.cc

@@ -2039,15 +2039,28 @@ int setup_fields(THD *thd, Item **ref_pointer_array, TABLE_LIST *tables,
 
 
 /*
-  Remap table numbers if INSERT ... SELECT
-  Check also that the 'used keys' and 'ignored keys' exists and set up the
-  table structure accordingly
+  prepare tables
 
-  This has to be called for all tables that are used by items, as otherwise
-  table->map is not set and all Item_field will be regarded as const items.
+  SYNOPSIS
+    setup_tables()
+    tables - tables list
+    reinit - true if called for table reinitialization before
+             subquery reexecuting
+
+   RETURN
+     0	ok;  In this case *map will includes the choosed index
+     1	error
+
+   NOTE
+     Remap table numbers if INSERT ... SELECT
+     Check also that the 'used keys' and 'ignored keys' exists and set up the
+     table structure accordingly
+
+     This has to be called for all tables that are used by items, as otherwise
+     table->map is not set and all Item_field will be regarded as const items.
 */
 
-bool setup_tables(TABLE_LIST *tables)
+bool setup_tables(TABLE_LIST *tables, my_bool reinit)
 {
   DBUG_ENTER("setup_tables");
   uint tablenr=0;
@@ -2074,7 +2087,7 @@ bool setup_tables(TABLE_LIST *tables)
       table->keys_in_use_for_query.subtract(map);
     }
     table->used_keys.intersect(table->keys_in_use_for_query);
-    if (table_list->shared  || table->clear_query_id)
+    if ((table_list->shared  || table->clear_query_id) && !reinit)
     {
       table->clear_query_id= 0;
       /* Clear query_id that may have been set by previous select */

sql/sql_class.cc

@@ -1037,7 +1037,7 @@ bool select_singlerow_subselect::send_data(List<Item> &items)
   Item_singlerow_subselect *it= (Item_singlerow_subselect *)item;
   if (it->assigned())
   {
-      my_message(ER_SUBQUERY_NO_1_ROW, ER(ER_SUBQUERY_NO_1_ROW), MYF(0));
+    my_message(ER_SUBQUERY_NO_1_ROW, ER(ER_SUBQUERY_NO_1_ROW), MYF(0));
     DBUG_RETURN(1);
   }
   if (unit->offset_limit_cnt)

sql/sql_help.cc

@@ -686,7 +686,7 @@ int mysqld_help(THD *thd, const char *mask)
     goto end;
   }
   /* Init tables and fields to be usable from items */
-  setup_tables(tables);
+  setup_tables(tables, 0);
   memcpy((char*) used_fields, (char*) init_used_fields, sizeof(used_fields)); 
   if (init_fields(thd, tables, used_fields, array_elements(used_fields)))
   {

sql/sql_insert.cc

@@ -84,7 +84,7 @@ check_insert_fields(THD *thd,TABLE *table,List<Item> &fields,
     table_list.grant=table->grant;
 
     thd->dupp_field=0;
-    if (setup_tables(&table_list) ||
+    if (setup_tables(&table_list, 0) ||
 	setup_fields(thd, 0, &table_list,fields,1,0,0))
       return -1;
     if (thd->dupp_field)
@@ -204,7 +204,7 @@ int mysql_insert(THD *thd,TABLE_LIST *table_list,
   }
 
   if (check_insert_fields(thd,table,fields,*values,1) ||
-      setup_tables(insert_table_list) ||
+      setup_tables(insert_table_list, 0) ||
       setup_fields(thd, 0, insert_table_list, *values, 0, 0, 0) ||
       (duplic == DUP_UPDATE &&
        (setup_fields(thd, 0, insert_table_list, update_fields, 0, 0, 0) ||

sql/sql_lex.cc

@@ -1222,11 +1222,6 @@ void st_select_lex::mark_as_dependent(SELECT_LEX *last)
       s->uncacheable|= UNCACHEABLE_DEPENDENT;
       SELECT_LEX_UNIT *munit= s->master_unit();
       munit->uncacheable|= UNCACHEABLE_DEPENDENT;
-      //Tables will be reopened many times
-      for (TABLE_LIST *tbl= s->get_table_list();
-	   tbl;
-	   tbl= tbl->next)
-	tbl->shared= 1;
     }
 }
 

sql/sql_load.cc

@@ -123,7 +123,7 @@ int mysql_load(THD *thd,sql_exchange *ex,TABLE_LIST *table_list,
   else
   {						// Part field list
     thd->dupp_field=0;
-    if (setup_tables(table_list) ||
+    if (setup_tables(table_list, 0) ||
 	setup_fields(thd, 0, table_list, fields, 1, 0, 0))
       DBUG_RETURN(-1);
     if (thd->dupp_field)

sql/sql_olap.cc

@@ -164,7 +164,7 @@ int handle_olaps(LEX *lex, SELECT_LEX *select_lex)
   List<Item>	all_fields(select_lex->item_list);
 
 
-  if (setup_tables((TABLE_LIST *)select_lex->table_list.first) ||
+  if (setup_tables((TABLE_LIST *)select_lex->table_list.first, 0) ||
       setup_fields(lex->thd, 0, (TABLE_LIST *)select_lex->table_list.first,
 		   select_lex->item_list, 1, &all_fields,1) ||
       setup_fields(lex->thd, 0, (TABLE_LIST *)select_lex->table_list.first,

sql/sql_prepare.cc

@@ -679,7 +679,7 @@ static bool mysql_test_upd_fields(Prepared_statement *stmt,
 #endif
   if (open_and_lock_tables(thd, table_list))
     DBUG_RETURN(1);
-  if (setup_tables(table_list) ||
+  if (setup_tables(table_list, 0) ||
       setup_fields(thd, 0, table_list, fields, 1, 0, 0) || 
       setup_conds(thd, table_list, &conds) || thd->net.report_error)      
     DBUG_RETURN(1);

sql/sql_select.cc

@@ -301,7 +301,7 @@ JOIN::prepare(Item ***rref_pointer_array,
 
   /* Check that all tables, fields, conds and order are ok */
 
-  if (setup_tables(tables_list) ||
+  if (setup_tables(tables_list, 0) ||
       setup_wild(thd, tables_list, fields_list, &all_fields, wild_num) ||
       select_lex->setup_ref_array(thd, og_num) ||
       setup_fields(thd, (*rref_pointer_array), tables_list, fields_list, 1,
@@ -1015,7 +1015,7 @@ JOIN::reinit()
   if (unit->select_limit_cnt == HA_POS_ERROR)
     select_lex->options&= ~OPTION_FOUND_ROWS;
   
-  if (setup_tables(tables_list))
+  if (setup_tables(tables_list, 1))
     DBUG_RETURN(1);
   
   /* Reset of sum functions */

sql/sql_update.cc

@@ -95,7 +95,7 @@ int mysql_update(THD *thd,
   tables.table= table;
   tables.alias= table_list->alias;
 
-  if (setup_tables(update_table_list) ||
+  if (setup_tables(update_table_list, 0) ||
       setup_conds(thd,update_table_list,&conds) ||
       thd->lex->select_lex.setup_ref_array(thd, order_num) ||
       setup_order(thd, thd->lex->select_lex.ref_pointer_array,