PHP連接兩個MySQL表中的結果

Question

我有插入註釋數據和評論數據這樣的兩個MySQL表：

評論：

|id|post_id|text|name|timestamp|approved|parent_id|type|ip| 

評論：

在行動我

|id|postID|comments_id|reviewfield1|reviewfield2|reviewfield3 

爲每條評論插入一條評論。現在，我需要證明與評論name /打印評論列表和text + reviewfield1reviewfield2reviewfield3對於那些評論是approved這樣每個評論：

commenter 1 
    text 
    reviewfield1 
    reviewfield2 
    reviewfield3 

TRY：

"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" 

但這不是工作我。如何使用PHP JOIN方法生成這個？

Answer 1

您在查詢中犯了錯誤。它必須是這樣的：

"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" 

並且您可以從第二個（連接）表中選擇行，與第一個表相同。