SQL查詢后跟內部聯接

Question

我需要在表上運行一個簡單的查詢，以查找具有相應ID的所有行。 然后，我想執行內部聯接。

 $applications = SELECT * FROM applications WHERE clubid = $_SESSION['id']

一旦獲得了所有符合此條件的行，我便想按照此原則執行一些操作。 $applications僅用於存儲從上述查詢中找到的行。

SELECT *
FROM $applications
INNER JOIN productsapplied
ON $applications.ID = productsapplied.appid;

謝謝你的幫助

Answer 1

作為一個查詢來完成所有操作：

SELECT *
FROM applications a INNER JOIN
     productsapplied pa
     ON a.ID = pa.appid
WHERE a.clubid = $_SESSION['id'];

Answer 2

您可以將兩個查詢合並為

SELECT * FROM $applications
  INNER JOIN productsapplied
    ON $applications.ID = productsapplied.appid
  WHERE $applications.clubid = $_SESSION['id']

Answer 3

我認為您可以使用創建視圖

CREATE VIEW applications AS
 SELECT * FROM applications WHERE clubid = $_SESSION['id']

並引用你

SELECT *
FROM applications
INNER JOIN productsapplied
ON applications.ID = productsapplied.appid;