20. 从student表删除年龄大于30的记录的正确SQL命令是(A). DELETE FOR 年龄>30(B). DELETE FROM student WHERE 年龄>30(C).
問題詳情
20. 从student表删除年龄大于30的记录的正确SQL命令是 (A). DELETE FOR 年龄>30 (B). DELETE FROM student WHERE 年龄>30 (C). DELETE student FOR 年龄>30 (D). DELETE student WHERE 年龄>30