SUM of rows in My Sql with condition

Question

My Data is

ID       SCORE
 1        55
 1        -1
 1        25
 1        -1
 1        -1
 1        35
 2        25
 2        -1 
 2        65
 2        55
 2        21
 2        -1

Now i want to add/sum the score of each id ignoring -1 and i am trying with this code which is not working

SELECT SUM(CASE when SCORE>-1 THEN SUM(SCORE) ELSE 0 END) 
FROM jbit WHERE htno='$id'

Here i am already using WHERE so how can i use another WHERE, if i use multiple Where in single query it may effect other processes.. please help me out

Help me out friends

Answer 1

if there is only two column then there is no need to use SUM, you can try below

SELECT id, IF(SCORE=-1,0,SCORE) AS scoreSum
FROM table1
GROUP BY id

Working DEMO

alternative ( not tested )

SELECT id, SUM(IF(SCORE=-1,0,SCORE)) AS scoreSum
FROM table1
WHERE htno =$id
GROUP BY id

Answer 2

SELECT SUM(score) AS score_sum
FROM jbit 
WHERE htno='$id'
  AND score <> -1 ;

Answer 3

SELECT SUM(`SCORE`)
FROM `jbit`
WHERE `htno` = '$id'
    `SCORE` > 0;

Though, I'd suggest you to change '$id' to just $id if the column type of htno is INTEGER .

Answer 4

SELECT SUM(score) FROM <tablename> WHERE score != -1