sql加入進一步需要幫助

Question

我被困在查詢，我想要顯示來自不同的表和他們的橋表的數據。
表是：

bridge (bid,planid,fbridgeid) 
fbridge (fbridgeid,featureid,valueid) 
features (featureid,fname) 
value (valueid,value) 
plans (planid,name,price,discount) 

下面是到目前爲止我的查詢：

SELECT 
(NAME AS pname, price AS prize, 
discount AS ds, fname AS feature, VALUE AS vlue 
FROM plans ) 

我想所有的數據庫列，但按照計劃

like planid 1 ->> contains ->> feature id 1,2,3 and valueid 1,3,5 etc) 

Answer 1

加入你的表在他們正確的領域。

SELECT * 
FROM plans p 
INNER JOIN bridge b ON p.planid = b.planid 
INNER JOIN fbridge fb ON b.fbridgeid = fb.fbridgeid 
INNER JOIN features f ON fb.featureid = f.featureid 
INNER JOIN value v ON fb.valueid = v.valueid 

然後，您可以從它們中選擇任何字段。

SELECT p.name AS pname, p.price AS prize, p.discount AS ds, f.fname AS feature, v.value AS vlue 
FROM plans p 
INNER JOIN bridge b ON p.planid = b.planid 
INNER JOIN fbridge fb ON b.fbridgeid = fb.fbridgeid 
INNER JOIN features f ON fb.featureid = f.featureid 
INNER JOIN value v ON fb.valueid = v.valueid 

Answer 2

的Join旨意是：

SELECT pl.name AS pname, pl.price AS prize , pl.discount AS ds , fe.fname AS feature, va.VALUE AS vlue 
FROM plans pl 
JOIN bridge br ON br.planid = pl.planid 
JOIN fbridge fb ON fb.fbridgeid = br.fbridgeid 
JOIN features fe ON fe.featureid = fb.featureid 
JOIN value va ON va.valueid = fb.valueid 
WHERE pl.plainid = 1 

Answer 3

select b.bid,b.planid,b.fbridgeid,fb.fbridgeid,f.featureid,f.fname,v.valueid,v.value,p.name,p.price,p.discount from bridge as b 
inner join fbridge as fb on fb.bridgeid=b.bridgeid 
inner join features as f on f.featureId=fb.featureid 
inner join value as v on v.valueid=fb.valueid 
inner join plans as p on p.planid=b.planid 
where p.planid=1 and f.featureId in (1,2,3) and v.valueid in (1,3,5)