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  • SQL GROUP BY HAVING
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並前往https://riptutorial.com/sql/example/9307/use-having-to-check-for-multiple-conditions-in-a-group

SQL Tutorial => Use HAVING to check for multiple conditions ...

select customerId from orders group by customerId having sum(case when productID = 2 then 1 else 0 end) > 0 and sum(case when productID = 3 then 1 else 0 ...

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