alternative solution same results . Is it valid?
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Thanks for reaching out.
Yes, this is a valid solution. The structure of the query is not recommended as there are a lot of subqueries. This makes the performance slower. Anyway, congratulations to the alternative solution!
Hope this helps.
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Why did you not do not null, primary key and auto increment for customer id in the solution?
does not rollback and i don't know what i have to do , i do all sug solution with no result