[프그] 입양 시각 구하기 (2)

• https://school.programmers.co.kr/learn/courses/30/lessons/59413

• tip

SET @seq := -1; -- 변수 선언

SELECT (@seq := @seq + 1) as HR
	  ,name
from Employee;

--- OUTPUT --- 
seq name
0	Dan
1	James
2	Amy
3	Anne
4	John
5	Ron