题目内容

Evaluate this SQL statement: SELECT e.EMPLOYEE_ID,e.LAST_NAME,e.DEPARTMENT_ID, d.DEPARTMENT_NAME FROM EMPLOYEES e, DEPARTMENTS d WHERE e.DEPARTMENT_ID = d.DEPARTMENT_ID; In the statement, which capabilities of a SELECT statement are performed?()

A. selection, projection, join
B. difference, projection, join
C. selection, intersection, join
D. intersection, projection, join
E. difference, projection, product

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C. 球化退火
D. 去应力退火

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