SQL: unsupported engine fix for VTQ funcs

sql/item_timefunc.cc

@@ -3322,6 +3322,11 @@ VTQ_common<Item_func_X>::init_hton()
       hton= plugin_hton(plugin_int_to_ref(innodb_plugin));
       DBUG_ASSERT(hton);
     }
+    if (hton && !hton->versioned())
+    {
+      my_error(ER_VERS_ENGINE_UNSUPPORTED, MYF(0), Item::name ? Item::name : this->func_name());
+      hton= NULL;
+    }
   }
 }
 
@@ -3343,6 +3348,7 @@ Item_func_vtq_ts::get_date(MYSQL_TIME *res, ulonglong fuzzy_date)
   if (!hton)
     return true;
 
+  DBUG_ASSERT(hton->vers_query_trx_id);
   null_value= !hton->vers_query_trx_id(thd, res, trx_id, vtq_field);
 
   return false;
@@ -3394,6 +3400,7 @@ Item_func_vtq_id::get_by_trx_id(ulonglong trx_id)
     return 0;
   }
 
+  DBUG_ASSERT(hton->vers_query_trx_id);
   null_value= !hton->vers_query_trx_id(thd, &res, trx_id, vtq_field);
   return res;
 }
@@ -3404,6 +3411,7 @@ Item_func_vtq_id::get_by_commit_ts(MYSQL_TIME &commit_ts, bool backwards)
   THD *thd= current_thd; // can it differ from constructor's?
   DBUG_ASSERT(thd);
 
+  DBUG_ASSERT(hton->vers_query_commit_ts);
   null_value= !hton->vers_query_commit_ts(thd, &cached_result, commit_ts, VTQ_ALL, backwards);
   if (null_value)
   {
@@ -3516,6 +3524,7 @@ Item_func_vtq_trx_sees::val_int()
     return true;
   }
 
+  DBUG_ASSERT(hton->vers_trx_sees);
   bool result= false;
   null_value= !hton->vers_trx_sees(thd, result, trx_id1, trx_id0, commit_id1, iso_level1, commit_id0);
   return result;

sql/share/errmsg-utf8.txt

@@ -7502,8 +7502,8 @@ ER_VERS_FIELD_WRONG_TYPE
 ER_VERS_WRONG_PARAMS
         eng "Wrong parameters for versioned table %`s: %s"
 
-ER_VERS_TRX_ID_UNSUPPORTED
-        eng "Engine does not support versioned TRX_ID"
+ER_VERS_ENGINE_UNSUPPORTED
+        eng "Engine does not support System Versioning for %`s"
 
 ER_VERS_RANGE_UNITS_MISMATCH
         eng "Range units mismatch"

sql/sql_select.cc

@@ -769,7 +769,7 @@ setup_for_system_time(THD *thd, TABLE_LIST *tables, COND **where_expr, SELECT_LE
       {
         if (slex->vers_conditions.unit == UNIT_TRX_ID)
         {
-          my_error(ER_VERS_TRX_ID_UNSUPPORTED, MYF(0), table->table_name);
+          my_error(ER_VERS_ENGINE_UNSUPPORTED, MYF(0), table->table_name);
           DBUG_RETURN(-1);
         }
       }