SQL Quiz
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DATA DEFINITION AND MANIPULATION
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The table
OrderLines has PRIMARY KEY (order_id, line_no) and UNIQUE (order_id, product_id). It currently contains (100, 1, 'P1'), (100, 2, 'P2'), and (101, 1, 'P1'), where the values are listed as (order_id, line_no, product_id).Which row can be inserted without violating either constraint?
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