DECLARE authors_cursor SCROLL CURSOR FOR
SELECT au_lname, au_fname FROM authors
ORDER BY au_lname, au_fname
OPEN authors_cursor
-- Fetch the second row in the cursor. --绝对位置
FETCH ABSOLUTE 2 FROM authors_cursor
-- Fetch the row that is three rows after the current row. --相对位置
FETCH RELATIVE 3 FROM authors_cursor
此例子是pubs 里的
将其换入你的数据库就行了