Fix Magento 2 cron_schedule catalog_product_attribute_value_synchronize error

SQLSTATE[23000]: Integrity constraint violation: 1452 Cannot add or update a child row: a foreign key constraint fails (`magento2`.`catalog_product_entity_datetime`, CONSTRAINT `CAT_PRD_ENTT_DTIME_ENTT_ID_CAT_PRD_ENTT_ENTT_ID` FOREIGN KEY (`entity_id`) REFERENCES `catalog_product_entity` (`entity_id`) ON DELETE CAS), query was: INSERT INTO
catalog_product_entity_datetime(attribute_id, store_id, entity_id, `value`)
ON duplicate KEY UPDATE `value` = VALUES(`value`)
The problemmagento2 cron schedule error catalog product attribute value synchronize magenaut blog

Cron schedule return status error when processing job catalog_product_attribute_value_synchronize with the error message above.

The reason is some products are deleted without deleting the corresponding catalog_product_entity_* records. So they contain some records that have nonexistent entity_id.

It may happen with these tables:

  • catalog_product_entity_datetime
  • catalog_product_entity_decimal
  • catalog_product_entity_int
  • catalog_product_entity_text
  • catalog_product_entity_varchar

The solution
Remember always backup before you touch the database.

In this case, it’ safe to delete junk catalog_product_entity_* records:

delete from catalog_product_entity_datetime where entity_id not in (select entity_id FROM catalog_product_entity);

Replace catalog_product_entity_datetime with the corresponding table name in the error message. Again, always backup first.

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