题目内容

Which line of code has an error?

A. SELECT dname, ename
B. FROM emp e, dept d
C. WHERE emp.deptno=dept.deptno
D. ORDER BY 1,2

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A. INSERT
B. UPDATE
C. DELETE
D. SELECT FOR UPDATE
E. None of the above, they all implicitly begin a transaction.

A. Self-join
B. Equijoin
C. Outer join
D. Non-equijoin

A. HAVING
B. GROUP BY
C. WHERE
D. FROM

A. OR
B. AND
C. IN
D. =