Question

I would like to sum 3 columns from the same table based on three unique id.

If id="1" sum(area1) 
If id="2" sum(area2)
if id="3" sum(area3)

Table data:

id area1 area2 area3
1   10     2    10
1    1     10    10
2    1     10    10
3    1     10    10
3  10     2     10

Output should be:

id1= 43 id2 = 21 id3 = 43

Select houseID, sum(area1), b.sum(area2), c.sum(area3) FROM table1, table1 b, table1 c
WHERE table1.id="1" or b.id = "2" or c.id="3"

Answer 1

Edit:

Considering that you edited your output, you have to do:

select Id, sum(area1 + area2 + area3) as 'Sum'
from yourTable
--where id in (1,2,3) if you have more id's and just want those
group by Id