Skriv om och testa vilken som presterar snabbare:
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 till och med skriva så här (varning:inte standard SQL syntax):
SELECT *, storedfunc(param, table.column) AS f
FROM table
HAVING f < value
ORDER BY f ;