[英]PHP JOIN Two MySQL table in result
我有两个 MySQL 表用于插入评论数据和评论数据,如下所示:
注释:
|id|post_id|text|name|timestamp|approved|parent_id|type|ip|
评论:
|id|postID|comments_id|reviewfield1|reviewfield2|reviewfield3
在行动中,我为每条评论插入一个评论。 现在,我需要显示/打印带有评论name
和text
评论列表 + reviewfield1
reviewfield2
reviewfield3
对于评论被approved
每个评论,如下所示:
commenter 1
text
reviewfield1
reviewfield2
reviewfield3
尝试:
"SELECT name,text,timestamp FROM " . COMMENTS . " LEFT JOIN " . REVIEWS . " WHERE " . COMMENTS . ".id = " . REVIEWS . ".comments_id AND
post_id = ? AND type = ? AND approved = 1 ", $id, $type"
但这对我不起作用。 如何使用 PHP JOIN
方法生成它?
您在查询中出错。 它必须是这样的:
"SELECT name,text,timestamp,reviewfield1 FROM " . COMMENTS . " LEFT JOIN " . REVIEWS . " ON " . COMMENTS . ".id = " . REVIEWS . ".comments_id WHERE
post_id = ? AND type = ? AND approved = 1 ", $id, $type"
您可以从第二个(连接的)表中选择行,与第一个表相同。
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