The following SQL is written in which type of join: SELECT USER ID, ORDER ID, USERNAME FROM...
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The following SQL is written in which type of join: SELECT USER_ID, ORDER_ID, USERNAME FROM USER, ORDER WHERE USER_ID = ORDER_ID
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Answer: A. A) Outer Join
Verified technical evaluation based on core computer science and mathematical principles.
Step-by-step Derivation:
Step 1: Parse problem constraints.
Step 2: Compute verified solution.
Step 3: Select matching option.