MDEV-11706 Assertion `is_stat_field || !table || (!table->write_set || bitmap_is_set(table->write_set, field_index) || (table->vcol_set && bitmap_is_set(table->vcol_set, field_index)))' failed in Field_time::store_TIME_with_warning

vcols and triggers. Revert 094f4cf77890c5a747a57cf2bed149b0b6933507,
backport the correct fix (Table_triggers_list::mark_fields_used() not
marking vcols) from 10.2.

6 files changed, 17 insertions, 36 deletions

diff --git a/sql/sql_base.cc b/sql/sql_base.cc
index d281758fc18..7f84f35c825 100644
--- a/sql/sql_base.cc
+++ b/sql/sql_base.cc
@@ -9033,9 +9033,7 @@ fill_record(THD * thd, List<Item> &fields, List<Item> &values,
   /* Update virtual fields*/
   thd->abort_on_warning= FALSE;
   if (vcol_table && vcol_table->vfield &&
-      update_virtual_fields(thd, vcol_table,
-                            vcol_table->triggers ? VCOL_UPDATE_ALL :
-                                                   VCOL_UPDATE_FOR_WRITE))
+      update_virtual_fields(thd, vcol_table, VCOL_UPDATE_FOR_WRITE))
     goto err;
   thd->abort_on_warning= save_abort_on_warning;
   thd->no_errors=        save_no_errors;
@@ -9099,9 +9097,7 @@ fill_record_n_invoke_before_triggers(THD *thd, List<Item> &fields,
       if (item_field && item_field->field &&
           (table= item_field->field->table) &&
         table->vfield)
-        result= update_virtual_fields(thd, table,
-                                      table->triggers ? VCOL_UPDATE_ALL :
-                                                        VCOL_UPDATE_FOR_WRITE);
+        result= update_virtual_fields(thd, table, VCOL_UPDATE_FOR_WRITE);
     }
   }
   return result;
@@ -9186,9 +9182,7 @@ fill_record(THD *thd, Field **ptr, List<Item> &values, bool ignore_errors,
   /* Update virtual fields*/
   thd->abort_on_warning= FALSE;
   if (table->vfield &&
-      update_virtual_fields(thd, table, 
-                            table->triggers ? VCOL_UPDATE_ALL :
-                                              VCOL_UPDATE_FOR_WRITE))
+      update_virtual_fields(thd, table, VCOL_UPDATE_FOR_WRITE))
     goto err;
   thd->abort_on_warning= abort_on_warning_saved;
   DBUG_RETURN(thd->is_error());
@@ -9241,9 +9235,7 @@ fill_record_n_invoke_before_triggers(THD *thd, Field **ptr,
   {
     TABLE *table= (*ptr)->table;
     if (table->vfield)
-      result= update_virtual_fields(thd, table,
-                                    table->triggers ? VCOL_UPDATE_ALL : 
-                                                      VCOL_UPDATE_FOR_WRITE);
+      result= update_virtual_fields(thd, table, VCOL_UPDATE_FOR_WRITE);
   }
   return result;
 
diff --git a/sql/sql_delete.cc b/sql/sql_delete.cc
index 5b233cde7c7..8aca415a9d0 100644
--- a/sql/sql_delete.cc
+++ b/sql/sql_delete.cc
@@ -328,9 +328,7 @@ bool mysql_delete(THD *thd, TABLE_LIST *table_list, COND *conds,
 	 ! thd->is_error())
   {
     if (table->vfield)
-      update_virtual_fields(thd, table,
-                            table->triggers ? VCOL_UPDATE_ALL :
-                                              VCOL_UPDATE_FOR_READ);
+      update_virtual_fields(thd, table, VCOL_UPDATE_FOR_READ);
     thd->examined_row_count++;
     // thd->is_error() is tested to disallow delete row on error
     if (!select || select->skip_record(thd) > 0)
@@ -1073,4 +1071,3 @@ bool multi_delete::send_eof()
   }
   return 0;
 }
-
diff --git a/sql/sql_trigger.cc b/sql/sql_trigger.cc
index b6915b708fa..4d7338b2e1d 100644
--- a/sql/sql_trigger.cc
+++ b/sql/sql_trigger.cc
@@ -2246,6 +2246,9 @@ void Table_triggers_list::mark_fields_used(trg_event_type event)
         bitmap_set_bit(trigger_table->read_set, trg_field->field_idx);
         if (trg_field->get_settable_routine_parameter())
           bitmap_set_bit(trigger_table->write_set, trg_field->field_idx);
+        if (trigger_table->field[trg_field->field_idx]->vcol_info)
+          trigger_table->mark_virtual_col(trigger_table->
+                                          field[trg_field->field_idx]);
       }
     }
   }
diff --git a/sql/sql_update.cc b/sql/sql_update.cc
index f134e0ba266..060952a589d 100644
--- a/sql/sql_update.cc
+++ b/sql/sql_update.cc
@@ -569,9 +569,7 @@ int mysql_update(THD *thd,
       while (!(error=info.read_record(&info)) && !thd->killed)
       {
         if (table->vfield)
-          update_virtual_fields(thd, table,
-                                table->triggers ? VCOL_UPDATE_ALL :
-                                                  VCOL_UPDATE_FOR_READ);
+          update_virtual_fields(thd, table, VCOL_UPDATE_FOR_READ);
         thd->examined_row_count++;
 	if (!select || (error= select->skip_record(thd)) > 0)
 	{
@@ -695,9 +693,7 @@ int mysql_update(THD *thd,
   while (!(error=info.read_record(&info)) && !thd->killed)
   {
     if (table->vfield)
-      update_virtual_fields(thd, table,
-                            table->triggers ? VCOL_UPDATE_ALL :
-                                              VCOL_UPDATE_FOR_READ);
+      update_virtual_fields(thd, table, VCOL_UPDATE_FOR_READ);
     thd->examined_row_count++;
     if (!select || select->skip_record(thd) > 0)
     {
@@ -2235,10 +2231,7 @@ int multi_update::do_updates()
       {
         int error;
         if (table->vfield &&
-            update_virtual_fields(thd, table,
-                                  (table->triggers ?
-                                   VCOL_UPDATE_ALL :
-                                   VCOL_UPDATE_FOR_WRITE)))
+            update_virtual_fields(thd, table, VCOL_UPDATE_FOR_WRITE))
           goto err2;
         if ((error= cur_table->view_check_option(thd, ignore)) !=
             VIEW_CHECK_OK)
diff --git a/sql/table.cc b/sql/table.cc
index db18214165e..1330560b6b6 100644
--- a/sql/table.cc
+++ b/sql/table.cc
@@ -6557,11 +6557,9 @@ bool is_simple_order(ORDER *order)
   @details
     The function computes the values of the virtual columns of the table and
     stores them in the table record buffer.
-    If vcol_update_mode is set to VCOL_UPDATE_ALL then all virtual column are
-    computed. Otherwise, only fields from vcol_set are computed: all of them,
-    if vcol_update_mode is set to VCOL_UPDATE_FOR_WRITE, and, only those with
-    the stored_in_db flag set to false, if vcol_update_mode is equal to
-    VCOL_UPDATE_FOR_READ.
+    Only fields from vcol_set are computed: all of them, if vcol_update_mode is
+    set to VCOL_UPDATE_FOR_WRITE, and, only those with the stored_in_db flag
+    set to false, if vcol_update_mode is equal to VCOL_UPDATE_FOR_READ.
 
   @retval
     0    Success
@@ -6583,9 +6581,8 @@ int update_virtual_fields(THD *thd, TABLE *table,
   {
     vfield= (*vfield_ptr);
     DBUG_ASSERT(vfield->vcol_info && vfield->vcol_info->expr_item);
-    if ((bitmap_is_set(table->vcol_set, vfield->field_index) &&
-         (vcol_update_mode == VCOL_UPDATE_FOR_WRITE || !vfield->stored_in_db)) ||
-        vcol_update_mode == VCOL_UPDATE_ALL)
+    if (bitmap_is_set(table->vcol_set, vfield->field_index) &&
+        (vcol_update_mode == VCOL_UPDATE_FOR_WRITE || !vfield->stored_in_db))
     {
       /* Compute the actual value of the virtual fields */
       error= vfield->vcol_info->expr_item->save_in_field(vfield, 0);
diff --git a/sql/table.h b/sql/table.h
index 17fdd4aba15..dde01a85d77 100644
--- a/sql/table.h
+++ b/sql/table.h
@@ -302,8 +302,7 @@ enum release_type { RELEASE_NORMAL, RELEASE_WAIT_FOR_DROP };
 enum enum_vcol_update_mode
 {
   VCOL_UPDATE_FOR_READ= 0,
-  VCOL_UPDATE_FOR_WRITE,
-  VCOL_UPDATE_ALL
+  VCOL_UPDATE_FOR_WRITE
 };
 
 typedef struct st_filesort_info