Omskriv og test, hvilken der klarer sig hurtigere:
SELECT *, storedfunc(param, table.column) AS f
FROM table
WHERE storedfunc(param, table.column) < value
ORDER BY f ;
SELECT *
FROM
( SELECT *, storedfunc(param, table.column) AS f
FROM table
) AS tmp
WHERE f < value
ORDER BY f ;
I MySQL kan du endda skrive sådan her (advarsel:ikke standard SQL syntaks):
SELECT *, storedfunc(param, table.column) AS f
FROM table
HAVING f < value
ORDER BY f ;