单项选择题
Which SQL statement accepts user input for the columns to be displayed, the table name, and WHERE condition? （）
A. SELECT &1, "&2" FROM &3 WHERE last_name = '&8'; B. SELECT &1, '&2' FROM &3 WHERE '& last_name = '&8'; C. SELECT &1, &2 FROM &3 WHERE last_name = '&8'; D. SELECT &1, '&2' FROM EMP WHERE last_name = '&8';
多项选择题 Which two statements are true about WHERE and HAVING clauses? （）
多项选择题 Which two statements about creating constraints are true?（）
单项选择题 You are granted the CREATE VIEW privilege. What does this allow you to do? （）
