針對: sql語句: SELECT * FROM T_COURSE a left join T_USER_COURSE_RECORD tucr ON a.COURSE_ID=tucr.COURSE_ID and tucr.[USER_ID]=@userId userId是傳入的參數 var data = from c in db.T_COURSE join u in db.T_USER_COURSE_RECORD
Suppose you have a tblRoom and tblUserInfo. Now, you need to select all the rooms regardless of whether the room has user information or not. This calls for a LEFT JOIN which will select everything from the LEFT side (the room side) regardless of
環境:WINDOWS/IIS/PHP/MYSQL自由生活的一種方式,所以我也選者了PHP.原因當我把phpMyAdmin安裝完以後進行測試時出現了設定檔錯誤的提示其中一句是"Client does not support authentication protocol requested by server"解決方案:(原文地址http://dev.mysql.com/doc/mysql/en/Old_client.html)CMD進入命令提示字元視窗cd