【简答题】List the names for the instructors as the format of names followed by the string " teacher' based on the SQL statement for the SQL server software; select name from instructor; note that: all the lett...
【单选题】操作も簡単で、 たいきゅうせい もあります。 1抵抗性 2対抗性 3耐久性 4退廃性
【简答题】我们知道,十进制小数0.5表示成二进制是0.1,十进制小数0.25表示成二进制是0.01,十进制小数0.75表示成二进制是0.11,那么十进制数小数0.387表示成二进制的结果是(精确到小数点后8位数字)____________
【单选题】All instructors will allow somewhat changed focus in the original topic.
【简答题】Find the department names of all instructors, and remove duplicates
【判断题】. 轮状花冠、漏斗状花冠、钟状花冠、管状花冠都为两侧对称。()
【简答题】List the average salary of all instructors from the instructor relation, then rename the new column of the average salary to avg_salary.
【简答题】The schemas of the instructor and teachs are as follows. Find the names of all instructors who have taught some course and the corresponding course_id.