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Consider the following SQL query:SELECT customer_idFROM ordersWHERE EXISTS (SELECT 1 FROM order_items WHERE order_items.order_id = orders.order_id);What does this query return?a)All customer IDs who have placed at least one orderb)All customer IDs who have not placed any orderc)All customer IDs who have placed more than one orderd)An error will occurCorrect answer is option 'A'. Can you explain this answer? for Software Development 2025 is part of Software Development preparation. The Question and answers have been prepared according to the Software Development exam syllabus. Information about Consider the following SQL query:SELECT customer_idFROM ordersWHERE EXISTS (SELECT 1 FROM order_items WHERE order_items.order_id = orders.order_id);What does this query return?a)All customer IDs who have placed at least one orderb)All customer IDs who have not placed any orderc)All customer IDs who have placed more than one orderd)An error will occurCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Software Development 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following SQL query:SELECT customer_idFROM ordersWHERE EXISTS (SELECT 1 FROM order_items WHERE order_items.order_id = orders.order_id);What does this query return?a)All customer IDs who have placed at least one orderb)All customer IDs who have not placed any orderc)All customer IDs who have placed more than one orderd)An error will occurCorrect answer is option 'A'. Can you explain this answer?.

Solutions for Consider the following SQL query:SELECT customer_idFROM ordersWHERE EXISTS (SELECT 1 FROM order_items WHERE order_items.order_id = orders.order_id);What does this query return?a)All customer IDs who have placed at least one orderb)All customer IDs who have not placed any orderc)All customer IDs who have placed more than one orderd)An error will occurCorrect answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Software Development. Download more important topics, notes, lectures and mock test series for Software Development Exam by signing up for free.

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