Question

我试图让MySQL查询正常工作但仍然出错。我想加入两个表tbl_collab和tbl.uploads并加上WHERE条款，但无法弄清楚我遇到了什么问题。感谢。

 SELECT tbl_collab.collab_userid, tbl_collab.file, tbl_collab.tbl_upload_id,
    tbl_uploads.id,tbl_uploads.title,
    FROM tbl_uploads
    LEFT JOIN tbl_uploads.id ON tbl_collab.tbl_upload_id
WHERE tbl_collab.collab_userid='2'

我收到此错误：

＃1064 - 您的SQL语法出错;检查与您的MySQL服务器版本相对应的手册，以便在＃tbl_uploads LEFT JOIN附近使用正确的语法tbl_uploads.id ON tbl_collab.tbl_upload_id WHERE＆＃39;在第3行

Answer 1

来自和左连接后的整个语法错误。请按以下查询更新。

试试这个：

SELECT tbl_collab.collab_userid, 
       tbl_collab.file, 
       tbl_collab.tbl_upload_id, 
       tbl_uploads.id, 
       tbl_uploads.title
FROM tbl_collab 
LEFT JOIN tbl_uploads ON tbl_uploads.id = tbl_collab.tbl_upload_id
WHERE tbl_collab.collab_userid='2'

Answer 2

在tbl_uploads_title之后的SELECT子句中有一个逗号（，）应删除。

Answer 3

SELECT tbl_collab.collab_userid, tbl_collab.file, tbl_collab.tbl_upload_id, tbl_uploads.id,tbl_uploads.title FROM tbl_uploads LEFT JOIN tbl_uploads.id ON tbl_collab.tbl_upload_id WHERE tbl_collab.collab_userid='2`

在FROM

之前删除逗号

带有JOIN和WHERE子句的MySQL查询无效

3 个答案: