我是新來的,所以我知道我錯過了一些簡單的東西,但是我弄不明白。我試圖將3個表連在一起,並且我已經使用了2個連接,但是當在同一個查詢中組合時,最終會出現錯誤。連接3個表時出錯php/sql
我的3個表是:
TBL_Authors
Author_ID
Author_Name
TBL_Publishers
Publisher_ID
Publisher_Name
TBL_Books
Title
Author_ID
Publisher_ID
ISBN
Genre
Price
Cost
Rating
我有什麼不工作:
$query = 'SELECT * FROM TBL_PUBLISHERS
JOIN TBL_BOOKS ON TBL_PUBLISHERS.Publisher_ID = TBL_BOOKS.Publisher_ID
SELECT * FROM TBL_AUTHORS
JOIN TBL_BOOKS ON TBL_AUTHORS.Author_ID = TBL_BOOKS.Author_ID
ORDER BY TBL_BOOKS.Title ASC;';
這些是兩個查詢 – GurV