我是新来的,所以我知道我错过了一些简单的东西,但是我弄不明白。我试图将3个表连在一起,并且我已经使用了2个连接,但是当在同一个查询中组合时,最终会出现错误。连接3个表时出错php/sql
我的3个表是:
TBL_Authors
Author_ID
Author_Name
TBL_Publishers
Publisher_ID
Publisher_Name
TBL_Books
Title
Author_ID
Publisher_ID
ISBN
Genre
Price
Cost
Rating
我有什么不工作:
$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;';
这些是两个查询 – GurV