A statement that mutates Drupal's cachetags table: the automatic-invalidation seam.
invalidateTags() writes only here, so watching execSql() for the mutating half signals a
content change with no Drupal-side hook. A SELECT must not match (read on every request).
A statement that mutates Drupal's
cachetagstable: the automatic-invalidation seam.invalidateTags()writes only here, so watchingexecSql()for the mutating half signals a content change with no Drupal-side hook. ASELECTmust not match (read on every request).