单项选择题
A. Create groups of data
B. Sort data in a specific order
C. Convert data to a different format
D. Retrieve data based on an unknown condition
单项选择题 Which clause should you use to exclude group results?（）
单项选择题 Scott issues the SQL statements: CREATE TABLE dept (deptno NUMBER(2), dname VARCHAR2(14), loc VARCHAR2(13)}; GRANT SELECT ON DEPT T0 SUE; If Sue needs to select from Scotts DEPT table, which command should she use?（）
单项选择题 What is true about joining tables through an equijoin?（）