一個SQL查詢字符串中的兩個內部聯接

Question

我目前正在嘗試從三個表中獲取信息。 我有一個'worker'表，其中包含一個商店ID（store_idStore）和一個工作ID（job_idJob）作為外鍵。 在商店和工作表中，每個表都有一個“名稱”字段-這是我想在查詢中返回的數據以及來自Worker的所有信息。 我唯一的警告是我必須將查詢放入C＃中的字符串中。

到目前為止，我已經能夠加入並從Worker和Store獲取信息：

SELECT worker.*, store.Name AS 'Store' 
from worker inner join store on worker.Store_idStore = store.idStore

如何擴展此名稱以獲取相對的Job名稱？

Answer 1

試試這個：

SELECT worker.*,store.Name AS store,job.Name AS job from worker inner join store on worker.Store_idStore = store.idStore and worker inner join job on worker.job_idJob = job.idJob

Answer 2

只需在末尾附加另一個內部聯接

SELECT w.*,s.Name AS 'Store', j.name as 'job' from worker w
inner join store s on worker.Store_idStore = store.idStore
Inner join job J on worker.job_idjob = job.idjob

Answer 3

嘗試這個：

SELECT DISTINCT w.*, s.*, j.*
FROM worker AS w
 LEFT JOIN store AS s ON w.store_idStore = s.id
 LEFT JOIN job AS j ON w.job_idJob = j.id

當然，您可以將*替換為所需的任何列名稱。 您可以在末尾添加Where子句。