我还是新来实现在我的db_design连接,我不知道,如果在所有这些SQL是有效的。这个SQL有效吗?
"SELECT * FROM notes JOIN small_note ON notes_id = '$id' AND authname = '$author' AND bookname = '$book' AND user = '$username'"
有点更容易阅读这样的:
"SELECT * FROM notes
JOIN small_note ON notes_id = '$id'
AND authname = '$author'
AND bookname = '$book'
AND user = '$username'";
你可以显示你的这两个表的数据库结构? – antyrat 2010-03-03 15:10:45