Du kan gøre
SELECT slno, item, price
FROM
(
SELECT slno, item, price, @t := @t + price total
FROM table1 CROSS JOIN (SELECT @t := 0) i
ORDER BY slno
) q
WHERE total <= 10000
eller
SELECT slno, item, price
FROM
(
SELECT slno, item, price,
(
SELECT SUM(price)
FROM table1
WHERE slno <= t.slno
) total
FROM table1 t
) q
WHERE total <= 10000
ORDER BY slno
Her er SQLFiddle demo