[英]How to INNER JOIN multiple tables?
I have 4 tables that look like so: 我有4张桌子,看起来像这样:
dog
ID
<numerous fields>
vetID
client
ID
<again, numerous fields I don't think are relevant>
vet
ID
<More irrelevant fields>
dogclient
ID
DogID
ClientID
I'm trying to get all the information from all these tables for a specific dog's ID. 我正在尝试从所有这些表中获取特定狗的ID的所有信息。 I tried this query in a PDO prepared statement 我在PDO准备好的语句中尝试了此查询
SELECT dog.*, client.*, vet.*
FROM dogclient
INNER JOIN client ON dogClient.ClientID = client.ID
INNER JOIN dog ON dogclient.DogID = dog.ID
INNER JOIN dog.vetID = vet.ID
WHERE dogclient.dogID = :id
the result was a syntax error in the query at: 结果是查询中的语法错误:
'.ID WHERE dogclient.dogID = '4''
How can I fix this? 我怎样才能解决这个问题?
SELECT dog.*, client.*, vet.* FROM dogclient
INNER JOIN client ON dogClient.ClientID = client.ID
INNER JOIN dog ON dogclient.DogID = dog.ID
INNER JOIN vet ON dog.vetID = vet.ID
WHERE dogclient.dogID = :id
you were missing the vet table in the last inner join 您在最后一个内部联接中缺少vet表
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