Database design -请看我的编辑。 select max(NoOfWords), Score from table where NoOfWords <= UserNumberOfWords select field1, field2, field3,rawsco

-请看我的编辑。

 select max(NoOfWords), Score from table
 where NoOfWords <= UserNumberOfWords

select field1, field2, field3,rawscore, (
    select max(percentage) from scorelookup where words < r.rawscore  ) rank
from scores r;

select field1, field2, field3,raw, (
    select max(percentage) from scorelookup where scoreable < r.rawscore and quiz='Test2'  ) rank
from scores r;

CREATE TABLE gameScoreThresholds (
game_id INTEGER NOT NULL,
raw_score SMALLINT NOT NULL,
score_percentage SMALLINT NOT NULL
)
;

CREATE UNIQUE INDEX gamescoreidx ON gameScoreThresholds(game_id, raw_score) CLUSTER
;

ALTER TABLE gameScoreThresholds ADD PRIMARY KEY (game_id, raw_score)
;

SELECT score_percentage FROM gameScoreThresholds 
WHERE game_id = ? AND raw_score <= ?
ORDER BY raw_score DESC 
FETCH FIRST ROW ONLY
;