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Continue to ChatHowto: mysql obtain the right sorting for nested records from the same table https://diegolamonica.info/howto-mysql-obtain-the-right-sorting-for-nested-records-from-the-same-table/
Howto: mysql obtain the right sorting for nested records from the same table https://diegolamonica.info/howto-mysql-obtain-the-right-sorting-for-nested-records-from-the-same-table/