PostgreSQL：枚举SQL查询结果

请考虑以下SQL查询和响应：

CREATE TEMPORARY TABLE dreams (name text,type text);
INSERT INTO dreams VALUES ('Monkey','nice');
INSERT INTO dreams VALUES ('Snake','Not nice');
INSERT INTO dreams VALUES ('Donkey','nice');
INSERT INTO dreams VALUES ('Bird','nice');

SELECT name from dreams WHERE type='nice' ORDER BY name;
  name
--------
 Bird
 Donkey
 Monkey
(3 rows)

为方便起见,我想按照外观的顺序列举结果,而不管任何现有的ID.预期的结果应该是a-la：

SELECT <magic_enumeration>,name from dreams WHERE type='nice' ORDER BY name;

 magic_enumeration |  name
-------------------+--------
 1                 | Bird
 2                 | Donkey
 3                 | Monkey
(3 rows)

有关如何按外观顺序枚举查询结果的任何想法？

解决方法

尝试使用row_number,这是一个窗口函数

SELECT row_number() OVER (ORDER BY name) sid,<-- magic enumeration!
       name 
  FROM dreams 
  WHERE type='nice' 
  ORDER BY name;