ROW_NUMBER超过一个新列

Question

是否可以通过row_number中的新列进行排序？我想做这样的事情:

select text1 + text2 as NEW_TEXT, row_number over (order by NEW_TEXT) from table

但这样的排序不起作用(我得到随机结果).

Answer 1

你必须重复这个表达 text1 + text2

select text1 + text2 as NEW_TEXT, 
row_number() over (order by text1 + text2)
from table

或者分步进行(foo可能是CTE)

SELECT
    NEW_TEXT,
    row_number() over (order by NEW_TEXT)
FROM
    (
    select text1 + text2 as NEW_TEXT from table
    ) foo