SQL Union按Union排序

Question

我有疑问

SELECT id, name 
  FROM users 
  WHERE id !=2 
UNION 
SELECT id, name 
  FROM users2 
  WHERE id != 3;

我想要那种，1条工会命令+2条工会--有可能吗？

Answer 1

添加要排序的列

SELECT id, name, 1 as unionOrder FROM users WHERE id !=2 
UNION 
SELECT id, name, 2 as unionOrder FROM users2 WHERE id != 3

ORDER BY unionOrder 

Answer 2

你也可以喜欢

(SELECT id, name 
  FROM users 
  WHERE id !=2
ORDER BY id)
UNION ALL
(SELECT id, name 
  FROM users2 
  WHERE id != 3
  ORDER BY id);