Is the subquery like a child element?

Question

I really want to know

Answer 1

Visit the following links given below:

https://www.google.com/url?sa=t&source=web&rct=j&url=https://stackoverflow.com/questions/1973246/how-to-specify-the-parent-query-field-from-within-a-subquery-in-mysql&ved=2ahUKEwjt1dbrvdvxAhVSb30KHfRwA9sQFjAAegQIBxAC&usg=AOvVaw06FJ_QSwHtJ2D7USsvlkby

https://www.google.com/url?sa=t&source=web&rct=j&url=https://developer.salesforce.com/forums/%3Fid%3D906F00000005FjjIAE&ved=2ahUKEwjt1dbrvdvxAhVSb30KHfRwA9sQFjABegQIAxAC&usg=AOvVaw3YI37WHPFKKIokGktdK09D

Watch the video, its link is given below:

https://www.google.com/url?sa=t&source=web&rct=j&url=https://learnsql.com/blog/sql-subqueries/&ved=2ahUKEwiOq9-AvtvxAhXUxGEKHWH-BpQQo7QBegQIBRAB&usg=AOvVaw22ePn5ClzQCMMlE9kf7nZG

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Hope this helps.