php - MYSQL语句搞不明白是怎么回事

Question

我为学生日程表打印输出创建了这个连接语句，我是 sql 和 php 的新手，无法弄清楚我做错了什么。如果有人能提供帮助，我将不胜感激。提前致谢...(附注，如果这是一个非常基本的问题，我很抱歉)...

mysql_select_db($database_newconn, $newconn);
$query_Recordset1 = "SELECT a.student_id AS "Student ID", f.name AS "Course Name", g.name AS "Lesson Name", g.date AS "Lesson Date", g.start_time AS "Lesson Start Time", g.end_time AS "Lesson End Time", CONCAT( h.first_name,' ', h.last_name) AS "Lesson Tutor" FROM student_table a JOIN enrollement_schedule_table b ON(a.id = b.student_id) JOIN course_table f ON(f.id = b.course_id) JOIN student_attendance_slot_table c ON(c.student_id = a.id) JOIN lesson_table g ON(g.id = c.lesson_id) JOIN tutor_table d ON(d.id = g.tutor_id) JOIN staff_table h ON(h.id = d.staff_id)";
$Recordset1 = mysql_query($query_Recordset1, $newconn) or die(mysql_error());
$row_Recordset1 = mysql_fetch_assoc($Recordset1);
$totalRows_Recordset1 = mysql_num_rows($Recordset1);

Answer 1

您有一个报价问题。去掉列别名周围的引号并使用标记

$query_Recordset1 = "
    SELECT a.student_id AS `Student ID`, 
        f.name AS `Course Name`, 
        g.name AS `Lesson Name`, 
        g.date AS `Lesson Date`, 
        g.start_time AS `Lesson Start Time`, 
        g.end_time AS `Lesson End Time`, 
        CONCAT( h.first_name,' ', h.last_name) AS `Lesson Tutor` 
        FROM student_table a 
        JOIN enrollement_schedule_table b ON(a.id = b.student_id) 
        JOIN course_table f ON(f.id = b.course_id) 
        JOIN student_attendance_slot_table c ON(c.student_id = a.id) 
        JOIN lesson_table g ON(g.id = c.lesson_id) 
        JOIN tutor_table d ON(d.id = g.tutor_id) 
        JOIN staff_table h ON(h.id = d.staff_id)";