单项选择题
A. WHERE B. HAVING C. RESTRICT D. GROUP BY E. ORDER BY
Evaluate these two SQL statements:SELECT last_name, sal...
单项选择题Evaluate these two SQL statements:SELECT last_name, salary, hire_dateFROM EMPLOYEES ORDRE BY salary DESC; SELECT last_name, salary, hire_dateFROM EMPOLYEES ORDER BY 2 DESC; What is true about them?（）
A. The two statements produce identical results. B. The second statement returns a syntax error. C. There is no need to specify DESC because the results are sorted in descending order by default. D. The two statements can be made to produce identical results by adding a column alias for the salary column in the second SQL statement.
Which is an iSQL*Plus command?（）A. INSERTB. UPDATEC. SE...
单项选择题Which is an iSQL*Plus command?（）
A. INSERT B. UPDATE C. SELECT D. DESCRIBE E. DELETE F. RENAME
Which object privileges can be granted on a view?（）A. n...
单项选择题Which object privileges can be granted on a view?（）
A. none B. DELETE, INSERT,SELECT C. ALTER, DELETE, INSERT, SELECT D. DELETE, INSERT, SELECT, UPDATE
