sql - If my subquery is returning multiple value then i need to perform normalization? -

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select title  movie  movie_no = (select movie_no                    customer                    inner join issues on customer.`cus_id`=issues.`cus_id`                   name = 'shyam')

no. need use in or any:

select title movie movie_no in (select movie_no                    customer inner join                         issues                         on customer.cus_id = issues.cus_id                    name = 'shyam'                   );

i mean, might need normalize data other reasons, subquery returning more 1 value not such reason. and, data structure seems reasonable, based on 1 query.


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