moveEntityTable example

      }
    }

    // JOINs must be in order. i.e, any tables you mention in the ON clause of a     // JOIN must appear prior to that JOIN. Since we're modifying a JOIN in     // place, and adding a new table, we must ensure that the new table appears     // prior to this one. So we recorded at what index we saw that table, and     // then use array_splice() to move the workspace_association table join to     // the correct position.     foreach ($move_workspace_tables as $workspace_association_table => $alias) {
      $this->moveEntityTable($query, $workspace_association_table, $alias);
    }

    $base_entity_table = $entity_type->isTranslatable() ? $entity_type->getDataTable() : $entity_type->getBaseTable();

    $base_fields = array_diff($table_mapping->getFieldNames($entity_type->getBaseTable()), [$entity_type->getKey('langcode')]);
    $revisionable_fields = array_diff($table_mapping->getFieldNames($entity_type->getRevisionDataTable()), $base_fields);

    // Go through and look to see if we have to modify fields and filters.     foreach ($query->fields as &$field_info) {
      // Some fields don't actually have tables, meaning they're formulae and       // whatnot. At this time we are going to ignore those.