多项选择题
Which two are character manipulation functions? （）
A.TRIM B.REPLACE C.TRUNC D.TO_DATE E.MOD F.CASE
多项选择题 Which two are attributes of iSQL*Plus? （）
单项选择题 In which case would you use a FULL OUTER JOIN?（）
多项选择题 Which three statements about subqueries are true? （）
