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我想要做的是查询我的数据库“sc2”并搜索 3 个表以获取某些信息。

我有 3 张桌子

===
Matches
====
matchid
matchname
casterid
eventid

=== 
Casters
===
casterid
casteralias
casterurl

===
Events 
===
eventid
eventname

我正在使用的当前 SQL 语句在一定程度上有效：

$sql = "
SELECT m.title AS matchTitle, c.casteralias matchCaster, m.dateadded matchDate, 
comp.eventname FROM matches m
LEFT JOIN 
casters AS c
ON 
c.casterid = m.casterid
LEFT OUTER JOIN
competitions AS comp
ON m.eventid = comp.id
WHERE m.title LIKE '%".$search."%'
OR 
c.casteralias LIKE '%".$search."%'
OR 
comp.eventname LIKE '%".$search."%'
ORDER BY
m.dateadded
DESC";

它提取了必要的信息，但我想在结果集中区分原始表，因此我可以根据找到的结果来自哪个表来处理结果。

matchTitle  matchCaster matchDate   eventname
Hero vs Revival HuskyStarcraft  2013-06-05 15:54:05 \N
Idra vs Stephano    HuskyStarcraft  2013-05-30 13:28:05 \N
Stephano vs BabyKnight  HuskyStarcraft  2013-05-29 14:31:46 WCS Europe
Trimaster vs Destiny    HuskyStarcraft  2013-05-28 18:26:45 \N
RorO vs Innovation  HuskyStarcraft  2013-05-27 22:04:28 \N
Psy vs Camara   HuskyStarcraft  2013-05-26 02:13:10 \N
Minigun vs Maker    HuskyStarcraft  2013-05-23 20:05:00 \N

结果似乎很好..我只需要确定一种方法来根据首先搜索的内容来区分搜索结果的实际显示。因此，如果用户搜索施法者，而不是获得最近的匹配信息，他们将获得施法者的缩略图以及来自该特定施法者的最近施法者。

我希望我能说清楚，并提前感谢您提供的任何建议。:)

4

1 回答 1

0

有点乱，但这就是你想要的

Select * from (
SELECT "Matches" as Source, m.title AS matchTitle, 
c.casteralias as matchCaster, m.dateadded as matchDate, comp.eventname 
FROM matches m
LEFT JOIN casters AS c ON c.casterid = m.casterid
LEFT OUTER JOIN competitions AS comp ON m.eventid = comp.id
WHERE m.title LIKE '%".$search."%'
Union
SELECT "Caster", m.title, 
c.casteralias,m.dateadded, comp.eventname 
FROM matches m
LEFT JOIN casters AS c ON c.casterid = m.casterid
LEFT OUTER JOIN competitions AS comp ON m.eventid = comp.id
WHERE c.casteralias LIKE '%".$search."%'
Union
SELECT "Event", m.title, 
c.casteralias,m.dateadded, comp.eventname 
FROM matches m
LEFT JOIN casters AS c ON c.casterid = m.casterid
LEFT OUTER JOIN competitions AS comp ON m.eventid = comp.id
WHERE comp.eventname LIKE '%".$search."%') allLikes

ORDER BY matchDate DESC
于 2013-06-05T22:49:47.670 回答