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Mysql info
Gick igen en SQL-fråga
SELECT *,COUNT(ItemID) as Number FROM Threads LEFT JOIN Items USING(ThreadID) GROUP BY (ThreadID) // För att ta bort, gör först en korrekt select SELECT * FROM `lab5_Threads` RIGHT JOIN lab5_Items USING(ThreadID) WHERE Thread IS NULL // sen ändrar man den till en delete DELETE lab5_Items FROM `lab5_Threads` RIGHT JOIN lab5_Items USING(ThreadID) WHERE Thread IS NULL