MDEV-14649 Assertion `t->mysql_col_len == 8' failed in row_insert_for_mysql

SQL: add check for internal partition table type

Also fixes MDEV-14654

mysql-test/suite/versioning/r/partition.result

@@ -308,4 +308,7 @@ subpartition by hash(f_int1)
 (subpartition subpart11 storage engine = 'innodb',
 subpartition subpart12 storage engine = 'innodb'));
 insert into t1 values (1);
+create or replace table t1 (i int) engine=innodb partition by key(i);
+alter table t1 add system versioning;
+insert into t1 values();
 drop table t1;

mysql-test/suite/versioning/t/partition.test

@@ -251,6 +251,10 @@ subpartition by hash(f_int1)
 subpartition subpart12 storage engine = 'innodb'));
 insert into t1 values (1);
 
+create or replace table t1 (i int) engine=innodb partition by key(i);
+alter table t1 add system versioning;
+insert into t1 values();
+
 
 drop table t1;
 

sql/handler.cc

@@ -7093,6 +7093,8 @@ bool Vers_parse_info::fix_alter_info(THD *thd, Alter_info *alter_info,
 {
   TABLE_SHARE *share= table->s;
   bool integer_fields= create_info->vers_native(thd);
+  if (create_info->db_type->db_type == DB_TYPE_PARTITION_DB && table->file->native_versioned())
+    integer_fields= true;
   const char *table_name= share->table_name.str;
 
   if (!need_check() && !share->versioned)