SQL 服务器 UNION 更改结果中查询的顺序

Question

I triying to make a union of 2 queries in SQL Server. I want that the second querie row stay at the final of the results, but it returns in a first place.

Query:

SELECT 
name,
total
FROM persons

UNION

SELECT 
'TOTAL' as name
SUM(total) as total,
from persons

The result that a get:

name    total
TOTAL   200
John    100
Matt    100

The result that I want:

name    total
John    100
Matt    100
TOTAL   200

How I can do that?

Answer 1

If you want the rows on a specific order you need to use ORDER BY .

In the absence of an ORDER BY clause a relational database will provide the rows in any unspecified order; the rows may show up in the order you want today, but that may change tomorrow.

For example, you can do:

select name, total
from (
  SELECT name, total, 1 as display_order
  FROM persons
 UNION ALL
  SELECT 'TOTAL', SUM(total), 2
  FROM persons
) x
ORDER BY display_order

Answer 2

SOLVED I used union all instead union