MDEV-8701 Crash on derived query

Make unique table check after setup_fields of update because unique table can materialize table and we do not need field resolving after materialization.

mysql-test/r/update.result

@@ -644,4 +644,39 @@ Handler_read_rnd	2
 Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
 drop table t1, t2;
+#
+#MDEV-8701: Crash on derived query
+#
+CREATE TABLE t1 (
+data_exit_entry_id int(11) NOT NULL,
+data_entry_id int(11) NOT NULL,
+data_entry_exit_id int(11) NOT NULL,
+data_exit_entry_quantity double NOT NULL
+) DEFAULT CHARSET=utf8;
+CREATE TABLE t2 (
+data_entry_id int(11) NOT NULL,
+data_entry_cost double NOT NULL,
+data_entry_quantity double NOT NULL
+) DEFAULT CHARSET=utf8;
+create  algorithm=temptable view v1 as SELECT data_entry_exit_id, data_exit_entry_quantity, data_entry_cost 
+FROM t1 INNER JOIN t2 as dt ON dt.data_entry_id = t1.data_entry_id;
+UPDATE t2 
+SET data_entry_cost
+= ( ( SELECT SUM(data_exit_entry_quantity * data_entry_cost)
+FROM 
+v1 AS query 
+WHERE data_entry_exit_id = t2.data_entry_id
+)
+);
+UPDATE t2 
+SET data_entry_cost
+= ( ( SELECT SUM(data_exit_entry_quantity * data_entry_cost)
+FROM 
+( SELECT data_entry_exit_id, data_exit_entry_quantity, data_entry_cost 
+FROM t1 INNER JOIN t2 as dt ON dt.data_entry_id = t1.data_entry_id) AS query 
+WHERE data_entry_exit_id = t2.data_entry_id
+)
+);
+drop view v1;
+drop table t1, t2;
 # End of MariaDB 10.0 tests

mysql-test/t/update.test

@@ -580,4 +580,45 @@ show status like 'Handler_read%';
 
 drop table t1, t2;
 
+--echo #
+--echo #MDEV-8701: Crash on derived query
+--echo #
+
+CREATE TABLE t1 (
+  data_exit_entry_id int(11) NOT NULL,
+  data_entry_id int(11) NOT NULL,
+  data_entry_exit_id int(11) NOT NULL,
+  data_exit_entry_quantity double NOT NULL
+) DEFAULT CHARSET=utf8;
+
+CREATE TABLE t2 (
+  data_entry_id int(11) NOT NULL,
+  data_entry_cost double NOT NULL,
+  data_entry_quantity double NOT NULL
+) DEFAULT CHARSET=utf8;
+
+create  algorithm=temptable view v1 as SELECT data_entry_exit_id, data_exit_entry_quantity, data_entry_cost 
+          FROM t1 INNER JOIN t2 as dt ON dt.data_entry_id = t1.data_entry_id;
+
+UPDATE t2 
+SET data_entry_cost
+  = ( ( SELECT SUM(data_exit_entry_quantity * data_entry_cost)
+	FROM 
+        v1 AS query 
+        WHERE data_entry_exit_id = t2.data_entry_id
+      )
+    );
+
+UPDATE t2 
+SET data_entry_cost
+  = ( ( SELECT SUM(data_exit_entry_quantity * data_entry_cost)
+	FROM 
+        ( SELECT data_entry_exit_id, data_exit_entry_quantity, data_entry_cost 
+          FROM t1 INNER JOIN t2 as dt ON dt.data_entry_id = t1.data_entry_id) AS query 
+        WHERE data_entry_exit_id = t2.data_entry_id
+      )
+    );
+
+drop view v1;
+drop table t1, t2; 
 --echo # End of MariaDB 10.0 tests

sql/sql_prepare.cc

@@ -1420,7 +1420,8 @@ static int mysql_test_update(Prepared_statement *stmt,
     (SELECT_ACL & ~table_list->table->grant.privilege);
   table_list->register_want_access(SELECT_ACL);
 #endif
-  if (setup_fields(thd, 0, stmt->lex->value_list, MARK_COLUMNS_NONE, 0, 0))
+  if (setup_fields(thd, 0, stmt->lex->value_list, MARK_COLUMNS_NONE, 0, 0) ||
+      check_unique_table(thd, table_list))
     goto error;
   /* TODO: here we should send types of placeholders to the client. */
   DBUG_RETURN(0);

sql/sql_update.cc

@@ -364,6 +364,9 @@ int mysql_update(THD *thd,
     DBUG_RETURN(1);				/* purecov: inspected */
   }
 
+  if (check_unique_table(thd, table_list))
+    DBUG_RETURN(TRUE);
+
   /* Apply the IN=>EXISTS transformation to all subqueries and optimize them. */
   if (select_lex->optimize_unflattened_subqueries(false))
     DBUG_RETURN(TRUE);
@@ -1095,19 +1098,30 @@ bool mysql_prepare_update(THD *thd, TABLE_LIST *table_list,
       setup_ftfuncs(select_lex))
     DBUG_RETURN(TRUE);
 
-  /* Check that we are not using table that we are updating in a sub select */
-  {
-    TABLE_LIST *duplicate;
-    if ((duplicate= unique_table(thd, table_list, table_list->next_global, 0)))
-    {
-      update_non_unique_table_error(table_list, "UPDATE", duplicate);
-      DBUG_RETURN(TRUE);
-    }
-  }
   select_lex->fix_prepare_information(thd, conds, &fake_conds);
   DBUG_RETURN(FALSE);
 }
 
+/**
+  Check that we are not using table that we are updating in a sub select
+
+  @param thd             Thread handle
+  @param table_list      List of table with first to check
+
+  @retval TRUE  Error
+  @retval FALSE OK
+*/
+bool check_unique_table(THD *thd, TABLE_LIST *table_list)
+{
+  TABLE_LIST *duplicate;
+  DBUG_ENTER("check_unique_table");
+  if ((duplicate= unique_table(thd, table_list, table_list->next_global, 0)))
+  {
+    update_non_unique_table_error(table_list, "UPDATE", duplicate);
+    DBUG_RETURN(TRUE);
+  }
+  DBUG_RETURN(FALSE);
+}
 
 /***************************************************************************
   Update multiple tables from join 

sql/sql_update.h

@@ -27,6 +27,7 @@ typedef class st_select_lex_unit SELECT_LEX_UNIT;
 
 bool mysql_prepare_update(THD *thd, TABLE_LIST *table_list,
                           Item **conds, uint order_num, ORDER *order);
+bool check_unique_table(THD *thd, TABLE_LIST *table_list);
 int mysql_update(THD *thd,TABLE_LIST *tables,List<Item> &fields,
 		 List<Item> &values,COND *conds,
 		 uint order_num, ORDER *order, ha_rows limit,