你可以使用这样的事情让每个骑师的结果一行:
SELECT jockey.jockey_skey,
TotalRaces = COUNT(*),
[1sts] = COUNT(CASE WHEN raceresults.place = '01' THEN 1 END),
[2nds] = COUNT(CASE WHEN raceresults.place = '02' THEN 1 END),
[3rds] = COUNT(CASE WHEN raceresults.place = '03' THEN 1 END),
[4ths] = COUNT(CASE WHEN raceresults.place = '04' THEN 1 END),
[5ths] = COUNT(CASE WHEN raceresults.place = '05' THEN 1 END),
[6ths] = COUNT(CASE WHEN raceresults.place = '06' THEN 1 END),
[7ths] = COUNT(CASE WHEN raceresults.place = '07' THEN 1 END),
[8ths] = COUNT(CASE WHEN raceresults.place = '08' THEN 1 END),
-- etc
[NonRunner] = COUNT(CASE WHEN raceresults.place = 'NR' THEN 1 END),
[Fell] = COUNT(CASE WHEN raceresults.place = 'F' THEN 1 END),
[PulledUp] = COUNT(CASE WHEN raceresults.place = 'PU' THEN 1 END),
[Unseated] = COUNT(CASE WHEN raceresults.place = 'U' THEN 1 END),
[Refused] = COUNT(CASE WHEN raceresults.place = 'R' THEN 1 END),
[BroughtDown] = COUNT(CASE WHEN raceresults.place = 'B' THEN 1 END)
FROM jockey
INNER JOIN runnersandriders
ON jockey.jockey_skey = runnersandriders.jockey_skey
INNER JOIN horse
ON runnersandriders.horse_skey = horse.horse_skey
INNER JOIN raceresults
ON horse.horse_skey = raceresults.horse_skey
GROUP BY jockey.jockey_skey
ORDER BY jockey.jockey_skey
Simplified Example on SQL Fiddle
另外,您可以使用WITH ROLLUP
获得总计额外的一行:
SELECT jockey.jockey_skey,
raceresults.place,
[CountOfResult] = COUNT(*)
FROM jockey
INNER JOIN runnersandriders
ON jockey.jockey_skey = runnersandriders.jockey_skey
INNER JOIN horse
ON runnersandriders.horse_skey = horse.horse_skey
INNER JOIN raceresults
ON horse.horse_skey = raceresults.horse_skey
GROUP BY jockey.jockey_skey, raceresults.place
WITH ROLLUP
ORDER BY jockey.jockey_skey, raceresults.place;
凡NULL
值代表共计
Simplified Example on SQL Fiddle
喜加雷斯选项1将是完美的,但我的地方字段是VARCHAR(50),这是因为我有事情喜欢NR,PU等这样第一个选项给我错误信息 Msg 245,Level 16,State 1,Line 1 将varchar值'NR'转换为数据类型int时转换失败。 – wafw1971 2013-04-25 10:43:45
你只需要把数字放在引号内'01'或'1'。我编辑了包含更多可能结果的答案 – GarethD 2013-04-25 10:49:22
杰出的Gareth非常感谢你。 – wafw1971 2013-04-25 10:51:21