Bug#29477: Not all fields of the target table were checked to have a default

value when inserting into a view.

The mysql_prepare_insert function checks all fields of the target table that
directly or indirectly (through a view) are specified in the INSERT
statement to have a default value. This check can be skipped if the INSERT
statement doesn't mention any insert fields. In case of a view this allows
fields that aren't mentioned in the view to bypass the check.

Now fields of the target table are always checked to have a default value
when insert goes into a view.


mysql-test/t/view.test:
  Added a test case for the bug#29477: Not all fields of the target table were 
  checked to have a default value when inserting into a view.
mysql-test/r/view.result:
  Added a test case for the bug#29477: Not all fields of the target table were 
  checked to have a default value when inserting into a view.
sql/sql_insert.cc:
  Bug#29477: Not all fields of the target table were checked to have a default
  value when inserting into a view.
  Now fields of the target table are always checked to have a default value
  when insert goes into a view.

mysql-test/r/view.result

@@ -3602,4 +3602,20 @@ DROP VIEW v1;
 DROP VIEW v2;
 DROP VIEW v3;
 DROP TABLE t1;
+#
+# Bug#29477: Not all fields of the target table were checked to have
+#            a default value when inserting into a view.
+#
+create table t1(f1 int, f2 int not null);
+create view v1 as select f1 from t1;
+insert into v1 values(1);
+Warnings:
+Warning	1423	Field of view 'test.v1' underlying table doesn't have a default value
+set @old_mode=@@sql_mode;
+set @@sql_mode=traditional;
+insert into v1 values(1);
+ERROR HY000: Field of view 'test.v1' underlying table doesn't have a default value
+set @@sql_mode=@old_mode;
+drop view v1;
+drop table t1;
 End of 5.0 tests.

mysql-test/t/view.test

@@ -3456,5 +3456,19 @@ DROP VIEW v2;
 DROP VIEW v3;
 DROP TABLE t1;
 
+--echo #
+--echo # Bug#29477: Not all fields of the target table were checked to have
+--echo #            a default value when inserting into a view.
+--echo #
+create table t1(f1 int, f2 int not null);
+create view v1 as select f1 from t1;
+insert into v1 values(1);
+set @old_mode=@@sql_mode;
+set @@sql_mode=traditional;
+--error ER_NO_DEFAULT_FOR_VIEW_FIELD
+insert into v1 values(1);
+set @@sql_mode=@old_mode;
+drop view v1;
+drop table t1;
 --echo End of 5.0 tests.
 

sql/sql_insert.cc

@@ -630,7 +630,8 @@ bool mysql_insert(THD *thd,TABLE_LIST *table_list,
   if (mysql_prepare_insert(thd, table_list, table, fields, values,
 			   update_fields, update_values, duplic, &unused_conds,
                            FALSE,
-                           (fields.elements || !value_count),
+                           (fields.elements || !value_count ||
+                            table_list->view != 0),
                            !ignore && (thd->variables.sql_mode &
                                        (MODE_STRICT_TRANS_TABLES |
                                         MODE_STRICT_ALL_TABLES))))