内部联接与lik​​e子句

Question

我正在使用类似子句的内部联接..

我试过的sql是

SELECT tbl_songs.id    AS sid, 
       tbl_songs.name  AS sname, 
       tbl_albums.id   AS aid, 
       tbl_albums.name AS aname 
FROM   tbl_songs 
       INNER JOIN tbl_albums 
               ON tbl_songs.albums LIKE '%' + tbl_albums.name + '%'; 

它显示我语法错误。

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '+ tbl_albums.name + '%'' at line 2

请详细说明语法错误的原因。

Answer 1

你必须使用concat ...

形成子句

...LIKE CONCAT('%',tbl_albums.name, '%');

在mysql

中没有这样的+运算符

Answer 2

You can use below format in oracle sql:
  SELECT tbl_songs.id    AS sid, 
           tbl_songs.name  AS sname, 
           tbl_albums.id   AS aid, 
           tbl_albums.name AS aname 
    FROM   tbl_songs 
           INNER JOIN tbl_albums 
                   ON tbl_songs.albums LIKE ('%'||tbl_albums.name||'%'); 

Answer 3

MySQL的一个例子：

SELECT  tbl_songs.bus_name FROM tbl_songs , tbl_albums
WHERE tbl_songs.albums LIKE CONCAT('%',tbl_albums.name, '%');