Oracle倒序排列有哪些技巧

使用ORDER BY子句：在查询中使用ORDER BY子句来对结果进行倒序排列。例如：SELECT * FROM table_name ORDER BY column_name DESC;

使用DESC关键字：在ORDER BY子句中使用DESC关键字来指定按照倒序排列排序。例如：SELECT * FROM table_name ORDER BY column_name DESC;

使用ROWNUM：利用ROWNUM来实现倒序排列。例如：SELECT * FROM (SELECT * FROM table_name ORDER BY column_name ASC) WHERE ROWNUM <= 10 ORDER BY column_name DESC;

使用窗口函数：利用窗口函数ROW_NUMBER()来实现倒序排列。例如：SELECT * FROM (SELECT *, ROW_NUMBER() OVER (ORDER BY column_name ASC) AS rn FROM table_name) WHERE rn <= 10 ORDER BY column_name DESC;

使用子查询：通过子查询先将结果倒序排列，然后再查询出需要的数据。例如：SELECT * FROM (SELECT * FROM table_name ORDER BY column_name DESC) WHERE ROWNUM <= 10;